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WR125R WR125X OWNER’S MANUAL 22B-F8199-E2 Read this manual carefully before operating this vehicle.

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Page 1: WR125R WR125X - Weebly€¦ · As the owner of the WR125R/WR125X, you are benefiting from Yamaha’s vast experience and newest technology regarding ... reputation for dependability

PANTONE285CVC

WR125RWR125X

OWNER’S MANUAL

22B-F8199-E2

Read this manual carefully before operating this vehicle.

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EAU46090

Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold.

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INTRODUCTIONEAU10102

Welcome to the Yamaha world of motorcycling!As the owner of the WR125R/WR125X, you are benefiting from Yamaha’s vast experience and newest technology regardingthe design and manufacture of high-quality products, which have earned Yamaha a reputation for dependability.Please take the time to read this manual thoroughly, so as to enjoy all advantages of your WR125R/WR125X. The Owner’sManual does not only instruct you in how to operate, inspect and maintain your motorcycle, but also in how to safeguardyourself and others from trouble and injury.In addition, the many tips given in this manual will help keep your motorcycle in the best possible condition. If you have anyfurther questions, do not hesitate to contact your Yamaha dealer.The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first!Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most cur-rent product information available at the time of printing, there may be minor discrepancies between your motorcycle and thismanual. If there is any question concerning this manual, please consult a Yamaha dealer.

WARNINGEWA10031

Please read this manual carefully and completely before operating this motorcycle.

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IMPORTANT MANUAL INFORMATIONEAU10132

Particularly important information is distinguished in this manual by the following notations:

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

A WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

A NOTICE indicates special precautions that must be taken to avoid damage to the vehicle or other property.

A TIP provides key information to make procedures easier or clearer.

WARNING

NOTICE

TIP

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IMPORTANT MANUAL INFORMATION

EAUM1010

WR125R/WR125XOWNER’S MANUAL

©2010 by MBK INDUSTRIE1st edition, July 2010

All rights reservedAny reprinting or unauthorized use without the written permission of

MBK INDUSTRIE is expressly prohibited.

Printed in France.

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TABLE OF CONTENTSSAFETY INFORMATION ..................1-1

DESCRIPTION ..................................2-1Left view ..........................................2-1Right view ........................................2-3Controls and instruments.................2-5

INSTRUMENT AND CONTROL FUNCTIONS .......................................3-1

Main switch/steering lock ................3-1Indicator and warning lights ............3-2Multi-function display ......................3-3Handlebar switches ........................3-5Clutch lever .....................................3-6Shift pedal .......................................3-6Brake lever .....................................3-6Brake pedal ....................................3-7Fuel tank cap ..................................3-7Fuel .................................................3-8Catalytic converters ........................3-9Seat ..............................................3-10Adjusting the shock absorber

assembly ...................................3-10Sidestand ......................................3-11Ignition circuit cut-off system ........3-12

FOR YOUR SAFETY – PRE-OPERATION CHECKS ............. 4-1

OPERATION AND IMPORTANT RIDING POINTS................................. 5-1

Starting the engine ......................... 5-1Shifting ........................................... 5-2Tips for reducing fuel

consumption ............................... 5-3Engine break-in .............................. 5-3Parking ........................................... 5-4

PERIODIC MAINTENANCE AND ADJUSTMENT ................................... 6-1

Owner’s tool kit ............................... 6-1Periodic maintenance chart for the

emission control system ............. 6-2General maintenance and

lubrication chart .......................... 6-3Removing and installing panels ..... 6-7Checking the spark plug ................. 6-8Engine oil and oil filter element ...... 6-9Coolant ......................................... 6-12Replacing the air filter element

and cleaning the check hose .... 6-13Adjusting the engine idling

speed ........................................ 6-14Adjusting the throttle grip free

play ........................................... 6-14Valve clearance ............................ 6-15Tires ............................................. 6-15

Spoke wheels .............................. 6-17Adjusting the clutch lever free

play ........................................... 6-18Checking the front brake lever free

play ........................................... 6-19Adjusting the brake pedal free

play ........................................... 6-19Checking the front and rear brake

pads .......................................... 6-19Checking the brake fluid level ...... 6-20Changing the brake fluid .............. 6-21Drive chain slack .......................... 6-21Cleaning and lubricating the drive

chain ......................................... 6-23Checking and lubricating the

cables ....................................... 6-23Checking and lubricating the

throttle grip and cable ............... 6-24Checking and lubricating the

brake and clutch levers ............ 6-24Checking and lubricating the

brake pedal ............................... 6-25Checking and lubricating the

sidestand .................................. 6-25Lubricating the swingarm

pivots ........................................ 6-25Checking the front fork ................. 6-26Checking the steering .................. 6-26Checking the wheel bearings ....... 6-27Battery ......................................... 6-27Replacing the fuses ..................... 6-29

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TABLE OF CONTENTSReplacing the headlight bulb ........6-29Replacing a tail/brake light bulb ...6-31Replacing a turn signal light

bulb ...........................................6-31Replacing the license plate light

bulb ...........................................6-31Replacing an auxiliary light bulb ...6-32Supporting the motorcycle ............6-32Front wheel ...................................6-33Rear wheel ...................................6-34Troubleshooting ............................6-36Troubleshooting charts .................6-37

MOTORCYCLE CARE AND STORAGE ..........................................7-1

Care ................................................7-1Storage ...........................................7-3

SPECIFICATIONS .............................8-1

CONSUMER INFORMATION.............9-1Identification numbers ....................9-1

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1-1

1

SAFETY INFORMATION EAU10318

Be a Responsible OwnerAs the vehicle’s owner, you are respon-sible for the safe and proper operationof your motorcycle.Motorcycles are single-track vehicles.Their safe use and operation are de-pendent upon the use of proper ridingtechniques as well as the expertise ofthe operator. Every operator shouldknow the following requirements beforeriding this motorcycle.He or she should:

� Obtain thorough instructions froma competent source on all aspectsof motorcycle operation.

� Observe the warnings and mainte-nance requirements in this Own-er’s Manual.

� Obtain qualified training in safeand proper riding techniques.

� Obtain professional technical ser-vice as indicated in this Owner’sManual and/or when made neces-sary by mechanical conditions.

Safe RidingPerform the pre-operation checks eachtime you use the vehicle to make sure itis in safe operating condition. Failure toinspect or maintain the vehicle properlyincreases the possibility of an accidentor equipment damage. See page 4-1for a list of pre-operation checks.

� This motorcycle is designed to car-ry the operator and a passenger.

� The failure of motorists to detectand recognize motorcycles in traf-fic is the predominating cause ofautomobile/motorcycle accidents.Many accidents have been causedby an automobile driver who didnot see the motorcycle. Makingyourself conspicuous appears tobe very effective in reducing thechance of this type of accident.Therefore:• Wear a brightly colored jacket.• Use extra caution when you are

approaching and passingthrough intersections, since in-tersections are the most likelyplaces for motorcycle accidentsto occur.

• Ride where other motorists cansee you. Avoid riding in anothermotorist’s blind spot.

� Many accidents involve inexperi-enced operators. In fact, many op-erators who have been involved inaccidents do not even have a cur-rent motorcycle license.• Make sure that you are qualified

and that you only lend your mo-torcycle to other qualified opera-tors.

• Know your skills and limits.Staying within your limits mayhelp you to avoid an accident.

• We recommend that you prac-tice riding your motorcyclewhere there is no traffic until youhave become thoroughly famil-iar with the motorcycle and all ofits controls.

� Many accidents have been causedby error of the motorcycle opera-tor. A typical error made by the op-erator is veering wide on a turn

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SAFETY INFORMATION

1-2

1

due to excessive speed or under-cornering (insufficient lean anglefor the speed).• Always obey the speed limit and

never travel faster than warrant-ed by road and traffic conditions.

• Always signal before turning orchanging lanes. Make sure thatother motorists can see you.

� The posture of the operator andpassenger is important for propercontrol.• The operator should keep both

hands on the handlebar andboth feet on the operator foot-rests during operation to main-tain control of the motorcycle.

• The passenger should alwayshold onto the operator, the seatstrap or grab bar, if equipped,with both hands and keep bothfeet on the passenger footrests.Never carry a passenger unlesshe or she can firmly place bothfeet on the passenger footrests.

� Never ride under the influence ofalcohol or other drugs.

Protective ApparelThe majority of fatalities from motorcy-cle accidents are the result of head in-juries. The use of a safety helmet is thesingle most critical factor in the preven-tion or reduction of head injuries.

� Always wear an approved helmet.� Wear a face shield or goggles.

Wind in your unprotected eyescould contribute to an impairmentof vision that could delay seeing ahazard.

� The use of a jacket, heavy boots,trousers, gloves, etc., is effective inpreventing or reducing abrasionsor lacerations.

� Never wear loose-fitting clothes,otherwise they could catch on thecontrol levers, footrests, or wheelsand cause injury or an accident.

� Always wear protective clothingthat covers your legs, ankles, andfeet. The engine or exhaust sys-tem become very hot during or af-ter operation and can cause burns.

� A passenger should also observethe above precautions.

Avoid Carbon Monoxide PoisoningAll engine exhaust contains carbonmonoxide, a deadly gas. Breathing car-bon monoxide can cause headaches,dizziness, drowsiness, nausea, confu-sion, and eventually death.Carbon Monoxide is a colorless, odor-less, tasteless gas which may bepresent even if you do not see or smellany engine exhaust. Deadly levels ofcarbon monoxide can collect rapidlyand you can quickly be overcome andunable to save yourself. Also, deadlylevels of carbon monoxide can lingerfor hours or days in enclosed or poorlyventilated areas. If you experience anysymptoms of carbon monoxide poison-ing, leave the area immediately, getfresh air, and SEEK MEDICAL TREAT-MENT.

� Do not run engine indoors. Even ifyou try to ventilate engine exhaustwith fans or open windows anddoors, carbon monoxide can rap-idly reach dangerous levels.

� Do not run engine in poorly venti-lated or partially enclosed areassuch as barns, garages, or car-ports.

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SAFETY INFORMATION

1-3

1

� Do not run engine outdoors whereengine exhaust can be drawn intoa building through openings suchas windows and doors.

LoadingAdding accessories or cargo to yourmotorcycle can adversely affect stabili-ty and handling if the weight distributionof the motorcycle is changed. To avoidthe possibility of an accident, use ex-treme caution when adding cargo oraccessories to your motorcycle. Useextra care when riding a motorcyclethat has added cargo or accessories.Here, along with the information aboutaccessories below, are some generalguidelines to follow if loading cargo toyour motorcycle:The total weight of the operator, pas-senger, accessories and cargo mustnot exceed the maximum load limit.Operation of an overloaded vehiclecould cause an accident.

When loading within this weight limit,keep the following in mind:

� Cargo and accessory weightshould be kept as low and close tothe motorcycle as possible. Se-curely pack your heaviest items asclose to the center of the vehicle aspossible and make sure to distrib-ute the weight as evenly as possi-ble on both sides of the motorcycleto minimize imbalance or instabili-ty.

� Shifting weights can create a sud-den imbalance. Make sure that ac-cessories and cargo are securelyattached to the motorcycle beforeriding. Check accessory mountsand cargo restraints frequently.• Properly adjust the suspension

for your load (suspension-ad-justable models only), andcheck the condition and pres-sure of your tires.

• Never attach any large or heavyitems to the handlebar, frontfork, or front fender. Theseitems, including such cargo assleeping bags, duffel bags, or

tents, can create unstable han-dling or a slow steering re-sponse.

� This vehicle is not designed topull a trailer or to be attached toa sidecar.

Genuine Yamaha AccessoriesChoosing accessories for your vehicleis an important decision. GenuineYamaha accessories, which are avail-able only from a Yamaha dealer, havebeen designed, tested, and approvedby Yamaha for use on your vehicle.Many companies with no connection toYamaha manufacture parts and acces-sories or offer other modifications forYamaha vehicles. Yamaha is not in aposition to test the products that theseaftermarket companies produce.Therefore, Yamaha can neither en-dorse nor recommend the use of ac-cessories not sold by Yamaha ormodifications not specifically recom-mended by Yamaha, even if sold andinstalled by a Yamaha dealer.Maximum load:

185 kg (408 lb)

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SAFETY INFORMATION

1-4

1

Aftermarket Parts, Accessories, andModificationsWhile you may find aftermarket prod-ucts similar in design and quality togenuine Yamaha accessories, recog-nize that some aftermarket accessoriesor modifications are not suitable be-cause of potential safety hazards to youor others. Installing aftermarket prod-ucts or having other modifications per-formed to your vehicle that change anyof the vehicle’s design or operationcharacteristics can put you and othersat greater risk of serious injury or death.You are responsible for injuries relatedto changes in the vehicle.Keep the following guidelines in mind,as well as those provided under “Load-ing” when mounting accessories.

� Never install accessories or carrycargo that would impair the perfor-mance of your motorcycle. Care-fully inspect the accessory beforeusing it to make sure that it doesnot in any way reduce groundclearance or cornering clearance,

limit suspension travel, steeringtravel or control operation, or ob-scure lights or reflectors.• Accessories fitted to the handle-

bar or the front fork area cancreate instability due to improperweight distribution or aerody-namic changes. If accessoriesare added to the handlebar orfront fork area, they must be aslightweight as possible andshould be kept to a minimum.

• Bulky or large accessories mayseriously affect the stability ofthe motorcycle due to aerody-namic effects. Wind may at-tempt to lift the motorcycle, orthe motorcycle may become un-stable in cross winds. These ac-cessories may also causeinstability when passing or beingpassed by large vehicles.

• Certain accessories can dis-place the operator from his orher normal riding position. Thisimproper position limits the free-dom of movement of the opera-

tor and may limit control ability,therefore, such accessories arenot recommended.

� Use caution when adding electri-cal accessories. If electrical acces-sories exceed the capacity of themotorcycle’s electrical system, anelectric failure could result, whichcould cause a dangerous loss oflights or engine power.

Aftermarket Tires and RimsThe tires and rims that came with yourmotorcycle were designed to match theperformance capabilities and to providethe best combination of handling, brak-ing, and comfort. Other tires, rims, siz-es, and combinations may not beappropriate. Refer to page 6-15 for tirespecifications and more information onreplacing your tires.

Transporting the MotorcycleBe sure to observe following instruc-tions before transporting the motorcy-cle in another vehicle.

� Remove all loose items from themotorcycle.

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SAFETY INFORMATION

1-5

1

� Check that the fuel cock (ifequipped) is in the “OFF” positionand that there are no fuel leaks.

� Point the front wheel straightahead on the trailer or in the truckbed, and choke it in a rail to pre-vent movement.

� Shift the transmission in gear (formodels with a manual transmis-sion).

� Secure the motorcycle with tie-downs or suitable straps that areattached to solid parts of the mo-torcycle, such as the frame or up-per front fork triple clamp (and not,for example, to rubber-mountedhandlebars or turn signals, or partsthat could break). Choose the lo-cation for the straps carefully sothe straps will not rub againstpainted surfaces during transport.

� The suspension should be com-pressed somewhat by the tie-downs, if possible, so that the mo-torcycle will not bounce excessive-ly during transport.

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DESCRIPTION

2-1

2

EAU32220

Left view

WR125R

1. Seat (page 3-10)2. Coolant level check window (page 6-12)3. Sidestand (page 3-11)4. Shock absorber assembly spring preload adjusting ring (page 3-10)5. Shift pedal (page 3-6)6. Front brake pads (page 6-19)

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DESCRIPTION

2-2

2

WR125X

1. Seat (page 3-10)2. Coolant level check window (page 6-12)3. Sidestand (page 3-11)4. Shock absorber assembly spring preload adjusting ring (page 3-10)5. Shift pedal (page 3-6)6. Front brake pads (page 6-19)

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DESCRIPTION

2-3

2

EAU32230

Right view

WR125R

1. Rear brake fluid reservoir (page 6-20)2. Idle adjusting screw (page 6-14)3. Front brake fluid reservoir (page 6-20)4. Fuse box (page 6-29)5. Battery (page 6-27)6. Engine oil filter element (page 6-9)7. Dipstick (page 6-9)

8. Brake pedal (page 3-7)9. Owner’s tool kit (page 6-1)10.Rear brake pads (page 6-19)

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DESCRIPTION

2-4

2

WR125X

1. Rear brake fluid reservoir (page 6-20)2. Idle adjusting screw (page 6-14)3. Front brake fluid reservoir (page 6-20)4. Fuse box (page 6-29)5. Battery (page 6-27)6. Engine oil filter element (page 6-9)7. Dipstick (page 6-9)8. Brake pedal (page 3-7)9. Owner’s tool kit (page 6-1)

10.Rear brake pads (page 6-19)

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DESCRIPTION

2-5

2

EAU10430

Controls and instruments

1 2 3 4 5 6 7

1. Clutch lever (page 3-6)2. Left handlebar switches (page 3-5)3. Main switch/steering lock (page 3-1)4. Multi-function display (page 3-3)5. Right handlebar switches (page 3-5)6. Throttle grip (page 6-14)7. Brake lever (page 3-6)

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INSTRUMENT AND CONTROL FUNCTIONS

3-1

3

EAU10460

Main switch/steering lock

The main switch/steering lock controlsthe ignition and lighting systems, and isused to lock the steering. The variouspositions are described below.

EAU38530

ONAll electrical circuits are supplied withpower; the meter lighting, taillight, li-cense plate light and auxiliary lightcome on, and the engine can be start-ed. The key cannot be removed.

TIPThe headlight comes on automaticallywhen the engine is started and stays onuntil the key is turned to “OFF”, even ifthe engine stalls.

EAU10661

OFFAll electrical systems are off. The keycan be removed.

WARNINGEWA10061

Never turn the key to “OFF” or“LOCK” while the vehicle is moving.Otherwise the electrical systems willbe switched off, which may result inloss of control or an accident.

EAU10683

LOCKThe steering is locked, and all electricalsystems are off. The key can be re-moved.

To lock the steering

1. Turn the handlebars all the way tothe left.

2. Push the key in from the “OFF” po-sition, and then turn it to “LOCK”while still pushing it.

3. Remove the key.

1. Push.2. Turn.

1 2

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INSTRUMENT AND CONTROL FUNCTIONS

3-2

3

To unlock the steering

Push the key in, and then turn it to“OFF” while still pushing it.

EAU11004

Indicator and warning lights

EAU11020

Turn signal indicator light “ ” This indicator light flashes when theturn signal switch is pushed to the left orright.

EAU11060

Neutral indicator light “ ” This indicator light comes on when thetransmission is in the neutral position.

EAU11080

High beam indicator light “ ” This indicator light comes on when thehigh beam of the headlight is switchedon.

EAUM2294

Coolant temperature warning light “ ” This warning light comes on if the en-gine overheats. If this occurs, stop theengine immediately and allow the en-gine to cool.The electrical circuit of the warning lightcan be checked by turning the key to“ON”. The warning light should comeon for a few seconds, and then go off.If the warning light does not come oninitially when the key is turned to “ON”,or if the warning light remains on, havea Yamaha dealer check the electricalcircuit.

NOTICEECA10021

Do not continue to operate the en-gine if it is overheating.

1. Push.2. Turn.

1 2

1. Neutral indicator light “ ”2. Turn signal indicator light “ ”3. High beam indicator light “ ”4. Engine trouble warning light “ ”5. Coolant temperature warning light “ ”

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INSTRUMENT AND CONTROL FUNCTIONS

3-3

3

TIP� For radiator-fan-equipped vehi-

cles, the radiator fan(s) automati-cally switch on or off according tothe coolant temperature in the ra-diator.

� If the engine overheats, see page6-37 for further instructions.

EAUT1934

Engine trouble warning light “ ” This warning light flashes or stays on ifan electrical circuit monitoring the en-gine is not working correctly. If this oc-curs, have a Yamaha dealer check theself-diagnosis system.The electrical circuit of the warning lightcan be checked by turning the key to“ON”. The warning light should comeon for a few seconds, and then go off.If the warning light does not come oninitially when the key is turned to “ON”,or if the warning light remains on, havea Yamaha dealer check the electricalcircuit.

EAUM2671

Multi-function display

WARNINGEWA12312

Be sure to stop the vehicle beforemaking any setting changes to themulti-function display. Changingsettings while riding can distract theoperator and increase the risk of anaccident.

The multi-function display is equippedwith the following:

� a speedometer� an odometer� two tripmeters (which show the

distance traveled since they werelast set to zero)

� a fuel reserve tripmeter (whichshows the distance traveled sincethe fuel level warning light cameon)

� an oil change indicator (whichflashes when the engine oil shouldbe changed)

� a fuel meter

TIP� Be sure to turn the key to “ON” be-

fore using the “RESET/ SELECT”button.

� When the key is turned to “ON”, allsegments of the display come onfor a few seconds. During thistime, the multi-function display isperforming a self-test.

� For the U.K. only: To switch thespeedometer and odometer/trip-meter displays between kilometersand miles, press the “RESET/SE-LECT” button for at least eight sec-onds.

Odometer and tripmeter modesA brief push (less than one second) onthe “RESET/SELECT” button switchesthe display between the odometer

1. Multi-function display2. “RESET/SELECT” button

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INSTRUMENT AND CONTROL FUNCTIONS

3-4

3

mode “ODO” and the tripmeter modes“TRIP 1” and “TRIP 2” in the followingorder:ODO → TRIP 1 → TRIP 2 → ODOWhen approximately 1.6 L (0.42 USgal, 0.35 Imp.gal) of fuel remains in thefuel tank, the odometer display will au-tomatically change to the fuel reservetripmeter mode “F-TRIP” and startcounting the distance traveled from thatpoint, and the last segment of the fuelmeter will start flashing. In that case,pushing the “RESET/SELECT” buttonswitches the display between the vari-ous tripmeter and odometer modes inthe following order:F-TRIP → TRIP 1 → TRIP 2 → ODO →F-TRIPTo reset a tripmeter, select it by push-ing the “RESET/SELECT” button briefly(less than one second), and then pushthe button again for at least three sec-onds. If you do not reset the fuel re-serve tripmeter manually, it will resetitself automatically and the display willreturn to the prior mode after refuelingand traveling 5 km (3 mi).

Oil change indicator

This indicator flashes at the initial 1000km (600 mi), then at 3000 km (1800mi), and every 3000 km (1800 mi)thereafter to indicate that the engine oilshould be changed.After changing the engine oil, reset theoil change indicator.

TIPThe oil change indicator can only be re-set when “OIL” flashes in the multi-function display.

To reset the oil change indicator, selectit by pushing the “RESET/SELECT”button briefly (less than one second),and then pushing the button again for atleast five seconds. When the oil change

indicator stops flashing and stays on,release the “RESET/SELECT” buttonwithin three seconds; the indicator willgo off.

TIPIf the oil change indicator still flashes af-ter the reset procedure has been com-pleted, repeat the reset procedure.

Fuel meter

The fuel meter indicates the amount offuel in the fuel tank. The display seg-ments of the fuel meter disappear to-wards “E” (Empty) as the fuel leveldecreases. When the last fuel metersegment starts flashing, refuel as soonas possible.

1. Oil change indicator “OIL”

1. Fuel meter

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INSTRUMENT AND CONTROL FUNCTIONS

3-5

3

EAU12348

Handlebar switches

Left

Right

EAU12360

Pass switch “PASS” Press this switch to flash the headlight.

EAU12400

Dimmer switch “ / ” Set this switch to “ ” for the highbeam and to “ ” for the low beam.

EAU12460

Turn signal switch “ / ” To signal a right-hand turn, push thisswitch to “ ”. To signal a left-handturn, push this switch to “ ”. When re-leased, the switch returns to the centerposition. To cancel the turn signallights, push the switch in after it has re-turned to the center position.

EAU12500

Horn switch “ ” Press this switch to sound the horn.

EAU12660

Engine stop switch “ / ” Set this switch to “ ” before startingthe engine. Set this switch to “ ” tostop the engine in case of an emergen-cy, such as when the vehicle overturnsor when the throttle cable is stuck.

EAU12711

Start switch “ ” Push this switch to crank the enginewith the starter. See page 5-1 for start-ing instructions prior to starting the en-gine.

1. Pass switch “PASS”2. Dimmer switch “ / ”3. Turn signal switch “ / ”4. Horn switch “ ”

1. Engine stop switch “ / ”2. Start switch “ ”

U22BE2E0.book Page 5 Thursday, August 5, 2010 10:55 AM

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INSTRUMENT AND CONTROL FUNCTIONS

3-6

3

EAU12820

Clutch lever

The clutch lever is located at the lefthandlebar grip. To disengage theclutch, pull the lever toward the handle-bar grip. To engage the clutch, releasethe lever. The lever should be pulledrapidly and released slowly for smoothclutch operation.The clutch lever is equipped with aclutch switch, which is part of the igni-tion circuit cut-off system. (See page3-12.)

EAU12871

Shift pedal

The shift pedal is located on the leftside of the motorcycle and is used incombination with the clutch lever whenshifting the gears of the 6-speed con-stant-mesh transmission equipped onthis motorcycle.

EAU12890

Brake lever

The brake lever is located at the righthandlebar grip. To apply the frontbrake, pull the lever toward the handle-bar grip.

1. Clutch lever 1. Shift pedal 1. Brake lever

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INSTRUMENT AND CONTROL FUNCTIONS

3-7

3

EAU12941

Brake pedal

The brake pedal is on the right side ofthe motorcycle. To apply the rearbrake, press down on the brake pedal.

EAUM2081

Fuel tank cap

To remove the fuel tank cap1. Open the fuel tank cap lock cover.2. Insert the key into the lock and turn

it 1/4 turn counterclockwise. Thelock will be released and the fueltank cap can be removed.

To install the fuel tank cap1. Push the fuel tank cap into position

with the key inserted in the lock.2. Turn the key clockwise to the orig-

inal position, and then remove it.3. Close the lock cover.

TIPThe fuel tank cap cannot be installedunless the key is in the lock. In addition,the key cannot be removed if the cap isnot properly installed and locked.

WARNINGEWA11141

Make sure that the fuel tank cap isproperly installed before riding.Leaking fuel is a fire hazard.

1. Brake pedal 1. Fuel tank cap lock cover2. Unlock.

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INSTRUMENT AND CONTROL FUNCTIONS

3-8

3

EAU13212

Fuel Make sure there is sufficient gasoline inthe tank.

WARNINGEWA10881

Gasoline and gasoline vapors areextremely flammable. To avoid firesand explosions and to reduce therisk of injury when refueling, followthese instructions.

1. Before refueling, turn off the en-gine and be sure that no one is sit-ting on the vehicle. Never refuelwhile smoking, or while in the vi-cinity of sparks, open flames, orother sources of ignition such asthe pilot lights of water heaters andclothes dryers.

2. Do not overfill the fuel tank. Stopfilling when the fuel reaches thebottom of the filler tube. Becausefuel expands when it heats up,heat from the engine or the suncan cause fuel to spill out of thefuel tank.

3. Wipe up any spilled fuel immedi-ately. NOTICE: Immediately wipeoff spilled fuel with a clean, dry,soft cloth, since fuel may deteri-orate painted surfaces or plasticparts. [ECA10071]

4. Be sure to securely close the fueltank cap.

WARNINGEWA15151

Gasoline is poisonous and cancause injury or death. Handle gaso-line with care. Never siphon gaso-line by mouth. If you should swallowsome gasoline or inhale a lot of gas-oline vapor, or get some gasoline inyour eyes, see your doctor immedi-

ately. If gasoline spills on your skin,wash with soap and water. If gaso-line spills on your clothing, changeyour clothes.

EAU43422

NOTICEECA11400

Use only unleaded gasoline. The useof leaded gasoline will cause severedamage to internal engine parts,such as the valves and piston rings,as well as to the exhaust system.

Your Yamaha engine has been de-signed to use premium unleaded gaso-line with a research octane number of95 or higher. If knocking (or pinging) oc-curs, use a gasoline of a different

1. Fuel tank filler tube2. Maximum fuel level

Recommended fuel:Premium unleaded gasoline only

Fuel tank capacity:8.5 L (2.25 US gal, 1.87 Imp.gal)

Fuel reserve amount (when the fuel level warning indicator flashes):

1.6 L (0.42 US gal, 0.35 Imp.gal)

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INSTRUMENT AND CONTROL FUNCTIONS

3-9

3

brand. Use of unleaded fuel will extendspark plug life and reduce maintenancecosts.

EAU13445

Catalytic converters This vehicle is equipped with catalyticconverters in the exhaust system.

WARNINGEWA10862

The exhaust system is hot after op-eration. To prevent a fire hazard orburns:

� Do not park the vehicle nearpossible fire hazards such asgrass or other materials thateasily burn.

� Park the vehicle in a placewhere pedestrians or childrenare not likely to touch the hotexhaust system.

� Make sure that the exhaust sys-tem has cooled down before do-ing any maintenance work.

� Do not allow the engine to idlemore than a few minutes. Longidling can cause a build-up ofheat.

NOTICEECA10701

Use only unleaded gasoline. The useof leaded gasoline will cause unre-pairable damage to the catalyticconverter.

U22BE2E0.book Page 9 Thursday, August 5, 2010 10:55 AM

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INSTRUMENT AND CONTROL FUNCTIONS

3-10

3

EAU13960

Seat

To remove the seatRemove the bolts, and then pull theseat off.

To install the seat1. Insert the projections on the front

of the seat into the seat holders asshown.

2. Place the seat in the original posi-tion, and then tighten the bolts.

TIPMake sure that the seat is properly se-cured before riding.

EAU14833

Adjusting the shock absorber assembly This shock absorber assembly isequipped with a spring preload adjust-ing ring.

NOTICEECA10101

To avoid damaging the mechanism,do not attempt to turn beyond themaximum or minimum settings.

Adjust the spring preload as follows.To increase the spring preload andthereby harden the suspension, turnthe adjusting ring in direction (a). To de-crease the spring preload and therebysoften the suspension, turn the adjust-ing ring in direction (b).

1. Bolt

1. Projection2. Seat holder

U22BE2E0.book Page 10 Thursday, August 5, 2010 10:55 AM

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INSTRUMENT AND CONTROL FUNCTIONS

3-11

3

Align the appropriate notch in the ad-justing ring with the position indicatoron the shock absorber.

For WR125R only

WARNINGEWA10221

This shock absorber assembly con-tains highly pressurized nitrogengas. Read and understand the fol-lowing information before handlingthe shock absorber assembly.

� Do not tamper with or attempt toopen the cylinder assembly.

� Do not subject the shock ab-sorber assembly to an openflame or other high heat source.This may cause the unit to ex-plode due to excessive gaspressure.

� Do not deform or damage thecylinder in any way. Cylinderdamage will result in poordamping performance.

� Do not dispose of a damaged orworn-out shock absorber as-sembly yourself. Take the shockabsorber assembly to a Yamahadealer for any service.

EAU15304

Sidestand The sidestand is located on the left sideof the frame. Raise the sidestand orlower it with your foot while holding thevehicle upright.

TIPThe built-in sidestand switch is part ofthe ignition circuit cut-off system, whichcuts the ignition in certain situations.(See page 3-12 for an explanation ofthe ignition circuit cut-off system.)

WARNINGEWA10241

The vehicle must not be ridden withthe sidestand down, or if the side-stand cannot be properly moved up(or does not stay up), otherwise thesidestand could contact the groundand distract the operator, resultingin a possible loss of control.Yamaha’s ignition circuit cut-offsystem has been designed to assistthe operator in fulfilling the respon-sibility of raising the sidestand be-fore starting off. Therefore, check

1. Spring preload adjusting nut2. Position indicator

Spring preload setting:Minimum (soft):

1Standard:

3Maximum (hard):

7

(b)

(a)

U22BE2E0.book Page 11 Thursday, August 5, 2010 10:55 AM

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INSTRUMENT AND CONTROL FUNCTIONS

3-12

3

this system regularly and have aYamaha dealer repair it if it does notfunction properly.

EAU44892

Ignition circuit cut-off system The ignition circuit cut-off system (com-prising the sidestand switch, clutchswitch and neutral switch) has the fol-lowing functions.

� It prevents starting when the trans-mission is in gear and the side-stand is up, but the clutch lever isnot pulled.

� It prevents starting when the trans-mission is in gear and the clutch le-ver is pulled, but the sidestand isstill down.

� It cuts the running engine when thetransmission is in gear and thesidestand is moved down.

Periodically check the operation of theignition circuit cut-off system accordingto the following procedure.

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INSTRUMENT AND CONTROL FUNCTIONS

3-13

3

With the engine turned off:1. Move the sidestand down.2. Make sure that the engine stop switch is set to “3. Turn the key on. 4. Shift the transmission into the neutral position.5. Push the start switch.Does the engine start?

With the engine still running:6. Move the sidestand up.7. Keep the clutch lever pulled.8. Shift the transmission into gear.9. Move the sidestand down.Does the engine stall?

After the engine has stalled:10. Move the sidestand up.11. Keep the clutch lever pulled.12. Push the start switch.Does the engine start?

The system is OK. The motorcycle can be ridden.

The neutral switch may not be working correctly.The motorcycle should not be ridden untilchecked by a Yamaha dealer.

The sidestand switch may not be working correctly.The motorcycle should not be ridden untilchecked by a Yamaha dealer.

The clutch switch may not be working correctly.The motorcycle should not be ridden untilchecked by a Yamaha dealer.

YES NO

YES NO

YES NO

If a malfunction is noted, have a Yamahadealer check the system before riding.

WARNING

”.

U22BE2E0.book Page 13 Thursday, August 5, 2010 10:55 AM

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FOR YOUR SAFETY – PRE-OPERATION CHECKS

4-1

4

EAU15596

Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspectionand maintenance procedures and schedules described in the Owner’s Manual.

WARNINGEWA11151

Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage.Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided inthis manual, have the vehicle inspected by a Yamaha dealer.

Before using this vehicle, check the following points:

ITEM CHECKS PAGE

Fuel• Check fuel level in fuel tank.• Refuel if necessary.• Check fuel line for leakage.

3-8

Engine oil• Check oil level in engine.• If necessary, add recommended oil to specified level.• Check vehicle for oil leakage.

6-9

Coolant• Check coolant level in reservoir.• If necessary, add recommended coolant to specified level.• Check cooling system for leakage.

6-12

Front brake

• Check operation.• If soft or spongy, have Yamaha dealer bleed hydraulic system.• Check brake pads for wear.• Replace if necessary.• Check fluid level in reservoir.• If necessary, add recommended brake fluid to specified level.• Check hydraulic system for leakage.

6-19, 6-20

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FOR YOUR SAFETY – PRE-OPERATION CHECKS

4-2

4

Rear brake

• Check operation.• If soft or spongy, have Yamaha dealer bleed hydraulic system.• Check brake pads for wear.• Replace if necessary.• Check fluid level in reservoir.• If necessary, add recommended brake fluid to specified level.• Check hydraulic system for leakage.

6-19, 6-20

Clutch

• Check operation.• Lubricate cable if necessary.• Check lever free play.• Adjust if necessary.

6-18

Throttle grip

• Make sure that operation is smooth.• Check throttle grip free play.• If necessary, have Yamaha dealer adjust throttle grip free play and lubricate cable

and grip housing.

6-14, 6-24

Control cables • Make sure that operation is smooth.• Lubricate if necessary. 6-23

Drive chain

• Check chain slack.• Adjust if necessary.• Check chain condition.• Lubricate if necessary.

6-21, 6-23

Wheels and tires

• Check for damage.• Check tire condition and tread depth.• Check air pressure.• Correct if necessary.

6-15, 6-17

Brake pedal • Make sure that operation is smooth.• Lubricate pedal pivoting point if necessary. 6-25

Brake and clutch levers • Make sure that operation is smooth.• Lubricate lever pivoting points if necessary. 6-24

Sidestand • Make sure that operation is smooth.• Lubricate pivot if necessary. 6-25

ITEM CHECKS PAGE

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FOR YOUR SAFETY – PRE-OPERATION CHECKS

4-3

4

Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened.• Tighten if necessary. —

Instruments, lights, signals and switches

• Check operation.• Correct if necessary. —

Sidestand switch • Check operation of ignition circuit cut-off system.• If system is not working correctly, have Yamaha dealer check vehicle. 3-11

Battery • Check fluid level.• Fill with distilled water if necessary. 6-27

ITEM CHECKS PAGE

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OPERATION AND IMPORTANT RIDING POINTS

5-1

5

EAU15951

Read the Owner’s Manual carefully tobecome familiar with all controls. Ifthere is a control or function you do notunderstand, ask your Yamaha dealer.

WARNINGEWA10271

Failure to familiarize yourself withthe controls can lead to loss of con-trol, which could cause an accidentor injury.

EAU45310

TIPThis model is equipped with a lean an-gle sensor to stop the engine in case ofa turnover. To start the engine after aturnover, be sure to turn the mainswitch to “OFF” and then to “ON”. Fail-ing to do so will prevent the engine fromstarting even though the engine willcrank when pushing the start switch.

EAUM2325

Starting the engine In order for the ignition circuit cut-offsystem to enable starting, one of thefollowing conditions must be met:

� The transmission is in the neutralposition.

� The transmission is in gear withthe clutch lever pulled and thesidestand up.See page 3-12 for more informa-tion.

1. Turn the key to “ON” and makesure that the engine stop switch isset to “ ”.The following warning lights andindicator light should come on for afew seconds, then go off.

� Neutral indicator light� Turn signal indicator light� High beam indicator light� Coolant temperature warning

light� Engine trouble warning light

NOTICEECA11833

If a warning or indicator light doesnot come on initially when the key isturned to “ON”, or if a warning or in-

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OPERATION AND IMPORTANT RIDING POINTS

5-2

5

dicator light remains on, see page3-2 for the corresponding warningand indicator light circuit check.

2. Shift the transmission into the neu-tral position. (See page 5-2.) Theneutral indicator light should comeon. If not, ask a Yamaha dealer tocheck the electrical circuit.

3. Start the engine by pushing thestart switch.If the engine fails to start, releasethe start switch, wait a few sec-onds, and then try again. Eachstarting attempt should be as shortas possible to preserve the bat-tery. Do not crank the engine morethan 10 seconds on any one at-tempt.

NOTICEECA11042

For maximum engine life, never ac-celerate hard when the engine iscold!

EAU16671

Shifting

Shifting gears lets you control theamount of engine power available forstarting off, accelerating, climbing hills,etc.The gear positions are shown in the il-lustration.

TIPTo shift the transmission into the neu-tral position, press the shift pedal downrepeatedly until it reaches the end of itstravel, and then slightly raise it.

NOTICEECA10260

� Even with the transmission inthe neutral position, do notcoast for long periods of timewith the engine off, and do nottow the motorcycle for long dis-tances. The transmission isproperly lubricated only whenthe engine is running. Inade-quate lubrication may damagethe transmission.

� Always use the clutch whilechanging gears to avoid damag-ing the engine, transmission,and drive train, which are notdesigned to withstand theshock of forced shifting.

1. Shift pedal2. Neutral position

U22BE2E0.book Page 2 Thursday, August 5, 2010 10:55 AM

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OPERATION AND IMPORTANT RIDING POINTS

5-3

5

EAU16810

Tips for reducing fuel con-sumption Fuel consumption depends largely onyour riding style. Consider the followingtips to reduce fuel consumption:

� Shift up swiftly, and avoid high en-gine speeds during acceleration.

� Do not rev the engine while shiftingdown, and avoid high enginespeeds with no load on the engine.

� Turn the engine off instead of let-ting it idle for an extended length oftime (e.g., in traffic jams, at trafficlights or at railroad crossings).

EAU16830

Engine break-in There is never a more important periodin the life of your engine than the periodbetween 0 and 1000 km (600 mi). Forthis reason, you should read the follow-ing material carefully.Since the engine is brand new, do notput an excessive load on it for the first1000 km (600 mi). The various parts inthe engine wear and polish themselvesto the correct operating clearances.During this period, prolonged full-throt-tle operation or any condition that mightresult in engine overheating must beavoided.

EAUM2560

0–500 km (0–300 mi)Avoid prolonged operation above 1/3throttle.500–1000 km (300–600 mi)Avoid prolonged operation above 1/2throttle. NOTICE: After 1000 km (600mi) of operation, the engine oil mustbe changed, the oil filter cartridge orelement replaced, and the oil strain-er cleaned. [ECA10321]

1000 km (600 mi) and beyondThe vehicle can now be operated nor-mally.

NOTICEECA10270

If any engine trouble should occurduring the engine break-in period,immediately have a Yamaha dealercheck the vehicle.

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OPERATION AND IMPORTANT RIDING POINTS

5-4

5

EAU17213

Parking When parking, stop the engine, andthen remove the key from the mainswitch.

WARNINGEWA10311

� Since the engine and exhaustsystem can become very hot,park in a place where pedestri-ans or children are not likely totouch them and be burned.

� Do not park on a slope or on softground, otherwise the vehiclemay overturn, increasing therisk of a fuel leak and fire.

� Do not park near grass or otherflammable materials whichmight catch fire.

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-1

6

EAU17243

Periodic inspection, adjustment, and lu-brication will keep your vehicle in thesafest and most efficient condition pos-sible. Safety is an obligation of the vehi-cle owner/operator. The most importantpoints of vehicle inspection, adjust-ment, and lubrication are explained onthe following pages.The intervals given in the periodicmaintenance charts should be simplyconsidered as a general guide undernormal riding conditions. However, de-pending on the weather, terrain, geo-graphical location, and individual use,the maintenance intervals may need tobe shortened.

WARNINGEWA10321

Failure to properly maintain the ve-hicle or performing maintenance ac-tivities incorrectly may increaseyour risk of injury or death duringservice or while using the vehicle. Ifyou are not familiar with vehicle ser-vice, have a Yamaha dealer performservice.

WARNINGEWA15121

Turn off the engine when performingmaintenance unless otherwisespecified.

� A running engine has movingparts that can catch on bodyparts or clothing and electricalparts that can cause shocks orfires.

� Running the engine while ser-vicing can lead to eye injury,burns, fire, or carbon monoxidepoisoning – possibly leading todeath. See page 1-1 for more in-formation about carbon monox-ide.

WARNINGEWA15460

Brake discs, calipers, drums, andlinings can become very hot duringuse. To avoid possible burns, letbrake components cool beforetouching them.

EAU35011

Owner’s tool kit

The owner’s tool kit is located inside thetool box.The service information included in thismanual and the tools provided in theowner’s tool kit are intended to assistyou in the performance of preventivemaintenance and minor repairs. How-ever, additional tools such as a torquewrench may be necessary to performcertain maintenance work correctly.

TIPIf you do not have the tools or experi-ence required for a particular job, havea Yamaha dealer perform it for you.

1. Owner’s tool kit

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-2

6

EAU46871

TIP� The annual checks must be performed every year, except if a kilometer-based maintenance, or for the UK, a

mileage-based maintenance, is performed instead.� From 30000 km (17500 mi), repeat the maintenance intervals starting from 6000 km (3500 mi).� Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical

skills.

EAU46920

Periodic maintenance chart for the emission control system

NO. ITEM CHECK OR MAINTENANCE JOB

ODOMETER READINGANNUAL CHECK1000 km

(600 mi)6000 km (3500 mi)

12000 km (7000 mi)

18000 km (10500 mi)

24000 km (14000 mi)

1 * Fuel line • Check fuel hoses for cracks or damage. √ √ √ √ √

2 Spark plug• Check condition.• Clean and regap. √ √

• Replace. √ √

3 * Valves • Check valve clearance.• Adjust. √ √ √ √

4 * Fuel injection • Adjust engine idling speed. √ √ √ √ √ √

5 * Muffler and exhaust pipe

• Check the screw clamp(s) for looseness. √ √ √ √ √

U22BE2E0.book Page 2 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-3

6

EAU17717

General maintenance and lubrication chart

NO. ITEM CHECK OR MAINTENANCE JOB

ODOMETER READINGANNUAL CHECK1000 km

(600 mi)6000 km (3500 mi)

12000 km (7000 mi)

18000 km (10500 mi)

24000 km (14000 mi)

1 * Air filter element• Clean. √ √

• Replace. √ √

2 * Battery

• Check electrolyte level and specif-ic gravity.

• Make sure that the breather hose is properly routed.

√ √ √ √ √

3 Clutch • Check operation.• Adjust. √ √ √ √ √

4 * Front brake• Check operation, fluid level and

vehicle for fluid leakage. √ √ √ √ √ √

• Replace brake pads. Whenever worn to the limit

5 * Rear brake• Check operation, fluid level and

vehicle for fluid leakage. √ √ √ √ √ √

• Replace brake pads. Whenever worn to the limit

6 * Brake hoses• Check for cracks or damage. √ √ √ √ √

• Replace. Every 4 years

7 * Wheels• Check runout, spoke tightness

and for damage.• Tighten spokes if necessary.

√ √ √ √ √

8 * Tires

• Check tread depth and for dam-age.

• Replace if necessary.• Check air pressure.• Correct if necessary.

√ √ √ √ √

U22BE2E0.book Page 3 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-4

6

9 * Wheel bearings • Check bearing for looseness or damage. √ √ √ √

10 * Swingarm

• Check operation and for exces-sive play. √ √ √ √

• Lubricate with molybdenum disul-fide grease. Every 24000 km (14000 mi)

11 Drive chain

• Check chain slack, alignment and condition.

• Adjust and lubricate chain with a special O-ring chain lubricant thoroughly.

Every 500 km (300 mi) and after washing the motorcycle, riding in the rain or riding in wet areas

12 * Steering bearings

• Check bearing play and steering for roughness. √ √ √ √ √

• Lubricate with lithium-soap-based grease. Every 24000 km (14000 mi)

13 * Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened. √ √ √ √ √

14 Brake lever pivot shaft • Lubricate with silicone grease. √ √ √ √ √

15 Brake pedal pivot shaft

• Lubricate with lithium-soap-based grease. √ √ √ √ √

16 Clutch lever pivot shaft

• Lubricate with lithium-soap-based grease. √ √ √ √ √

17 Sidestand• Check operation.• Lubricate with lithium-soap-based

grease.√ √ √ √ √

18 * Sidestand switch • Check operation. √ √ √ √ √ √

NO. ITEM CHECK OR MAINTENANCE JOB

ODOMETER READINGANNUAL CHECK1000 km

(600 mi)6000 km (3500 mi)

12000 km (7000 mi)

18000 km (10500 mi)

24000 km (14000 mi)

U22BE2E0.book Page 4 Thursday, August 5, 2010 10:55 AM

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6-5

6

19 * Front fork • Check operation and for oil leak-age. √ √ √ √

20 * Shock absorber as-sembly

• Check operation and shock ab-sorber for oil leakage. √ √ √ √

21 *

Rear suspension re-lay arm and con-necting arm pivoting points

• Check operation. √ √ √ √

• Lubricate with lithium-soap-based grease. √ √

22 Engine oil• Change. (See page 3-3.) √

When the oil change indicator flashes [2000 km (1200 mi) after the initial 1000 km (600 mi) and every 3000 km (1800 mi) thereaf-

ter]

• Check oil level and vehicle for oil leakage. Every 3000 km (1800 mi) √

23 Engine oil filter ele-ment • Replace. √ √ √ √ √

24 * Cooling system• Check coolant level and vehicle

for coolant leakage. √ √ √ √ √

• Change. Every 3 years

25 * Front and rear brake switches • Check operation. √ √ √ √ √ √

26 Moving parts and cables • Lubricate. √ √ √ √ √

27 * Throttle grip

• Check operation.• Check throttle grip free play, and

adjust if necessary.• Lubricate cable and grip housing.

√ √ √ √ √

NO. ITEM CHECK OR MAINTENANCE JOB

ODOMETER READINGANNUAL CHECK1000 km

(600 mi)6000 km (3500 mi)

12000 km (7000 mi)

18000 km (10500 mi)

24000 km (14000 mi)

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6-6

6

EAUM2070

TIP� The air filter needs more frequent service if you are riding in unusually wet or dusty areas.� Hydraulic brake service

• Regularly check and, if necessary, correct the brake fluid level.• Every two years change the brake fluid.• Replace the brake hoses every four years and if cracked or damaged.

28 * Lights, signals and switches

• Check operation.• Adjust headlight beam. √ √ √ √ √ √

NO. ITEM CHECK OR MAINTENANCE JOB

ODOMETER READINGANNUAL CHECK1000 km

(600 mi)6000 km (3500 mi)

12000 km (7000 mi)

18000 km (10500 mi)

24000 km (14000 mi)

U22BE2E0.book Page 6 Thursday, August 5, 2010 10:55 AM

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6-7

6

EAU18771

Removing and installing pan-els The panels shown need to be removedto perform some of the maintenancejobs described in this chapter. Refer tothis section each time a panel needs tobe removed and installed.

EAU19210

Panel A

To remove the panelRemove the screws, and then take thepanel off.

To install the panelPlace the panel in the original position,and then install the screws.

EAU19210

Panel B

To remove the panelRemove the screws, and then take thepanel off.

To install the panelPlace the panel in the original position,and then install the screws.

1. Panel A2. Panel B

1. Screw2. Panel A

1. Screw2. Panel B

U22BE2E0.book Page 7 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-8

6

EAU19604

Checking the spark plug The spark plug is an important enginecomponent, which is easy to check.Since heat and deposits will cause anyspark plug to slowly erode, the sparkplug should be removed and checkedin accordance with the periodic mainte-nance and lubrication chart. In addition,the condition of the spark plug can re-veal the condition of the engine.

To remove the spark plug1. Remove the spark plug cap.

2. Remove the spark plug as shown,with the spark plug wrench includ-ed in the owner’s tool kit.

To check the spark plug1. Check that the porcelain insulator

around the center electrode of thespark plug is a medium-to-light tan(the ideal color when the vehicle isridden normally).

TIPIf the spark plug shows a distinctly dif-ferent color, the engine could be oper-ating improperly. Do not attempt todiagnose such problems yourself. In-stead, have a Yamaha dealer checkthe vehicle.

2. Check the spark plug for electrodeerosion and excessive carbon orother deposits, and replace it ifnecessary.

3. Measure the spark plug gap with awire thickness gauge and, if nec-essary, adjust the gap to specifica-tion.

1. Spark plug cap

1. Spark plug wrench

Specified spark plug:NGK/CR8E

1. Spark plug gap

Spark plug gap:0.7–0.8 mm (0.028–0.031 in)

1

ZAUM0037

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6-9

6

To install the spark plug1. Clean the surface of the spark plug

gasket and its mating surface, andthen wipe off any grime from thespark plug threads.

2. Install the spark plug with thespark plug wrench, and then tight-en it to the specified torque.

TIPIf a torque wrench is not available wheninstalling a spark plug, a good estimateof the correct torque is 1/4–1/2 turnpast finger tight. However, the sparkplug should be tightened to the speci-fied torque as soon as possible.

3. Install the spark plug cap.

EAUM2582

Engine oil and oil filter ele-ment The engine oil level should be checkedbefore each ride. In addition, the oilmust be changed and the oil filter ele-ment replaced at the intervals specifiedin the periodic maintenance and lubri-cation chart.

To check the engine oil level1. Place the vehicle on a level sur-

face and hold it in an upright posi-tion. A slight tilt to the side canresult in a false reading.

2. Start the engine, warm it up forseveral minutes, and then turn itoff.

3. Wait a few minutes until the oil set-tles, remove the oil filler cap, wipethe dipstick clean, insert it backinto the oil filler hole (withoutscrewing it in), and then remove itagain to check the oil level.NOTICE: Do not operate the ve-hicle until you know that the en-gine oil level is sufficient. [ECA10011]

TIPThe engine oil should be between theminimum and maximum level marks.

Tightening torque:Spark plug:

12.5 Nm (1.25 m·kgf, 9.04 ft·lbf)

1. Engine oil filler cap

1. Dipstick2. Maximum level mark3. Minimum level mark

U22BE2E0.book Page 9 Thursday, August 5, 2010 10:55 AM

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6-10

6

4. If the engine oil is below the mini-mum level mark, add sufficient oilof the recommended type to raiseit to the correct level.

5. Install the oil filler cap.

To change the engine oil (with orwithout oil filter element replace-ment)

1. Start the engine, warm it up forseveral minutes, and then turn itoff.

2. Place an oil pan under the engineto collect the used oil.

3. Remove the engine oil filler capand the drain bolt along with the O-ring, compression spring, and en-gine oil strainer, to drain the oilfrom the crankcase. NOTICE:When removing the engine oildrain bolt, the O-ring, compres-sion spring, and oil strainer willfall out. Take care not to losethese parts. [ECA11001]

4. Clean the engine oil strainer withsolvent.

TIPSkip steps 5–7 if the oil filter element isnot being replaced.

5. Remove the oil filter element coverby removing the bolts.

6. Remove and replace the oil filterelement and O-ring.

7. Install the oil filter element cover byinstalling the bolts, then tighteningthem to the specified torque.

1. Engine oil drain bolt2. O-ring3. Compression spring4. Strainer

1. Bolt2. Oil filter element cover

1. Oil filter element2. O-ring

U22BE2E0.book Page 10 Thursday, August 5, 2010 10:55 AM

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6-11

6

TIPMake sure that the O-ring is properlyseated.

8. Install the engine oil strainer, com-pression spring, O-ring and the en-gine oil drain bolt, and then tightenit to the specified torque. NOTICE:Before installing the engine oildrain bolt, do not forget to in-stall the O-ring, compressionspring, and oil strainer in posi-tion. [ECA10421]

9. Refill with the specified amount ofthe recommended engine oil, andthen install and tighten the oil fillercap.

NOTICEECA11620

� In order to prevent clutch slip-page (since the engine oil alsolubricates the clutch), do notmix any chemical additives. Donot use oils with a diesel speci-fication of “CD” or oils of a high-er quality than specified. Inaddition, do not use oils labeled“ENERGY CONSERVING II” orhigher.

� Make sure that no foreign mate-rial enters the crankcase.

10. Start the engine, and then let it idlefor several minutes while checkingit for oil leakage. If oil is leaking, im-mediately turn the engine off andcheck for the cause.

11. Turn the engine off, and thencheck the oil level and correct it ifnecessary.

Tightening torque:Oil filter element cover bolt:

10 Nm (1.0 m·kgf, 7.2 ft·lbf)

Tightening torque:Engine oil drain bolt:

32 Nm (3.2 m·kgf, 23 ft·lbf)

Recommended engine oil:See page 8-1.

Oil quantity:Without oil filter element replace-ment:

0.95 L (1.00 US qt, 0.84 Imp.qt)With oil filter element replacement:

1.00 L (1.06 US qt, 0.88 Imp.qt)

U22BE2E0.book Page 11 Thursday, August 5, 2010 10:55 AM

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6-12

6

EAU20070

Coolant The coolant level should be checkedbefore each ride. In addition, the cool-ant must be changed at the intervalsspecified in the periodic maintenanceand lubrication chart.

EAUM2592

To check the coolant level1. Place the vehicle on a level sur-

face and hold it in an upright posi-tion.

TIP� The coolant level must be checked

on a cold engine since the levelvaries with engine temperature.

� Make sure that the vehicle is posi-tioned straight up when checkingthe coolant level. A slight tilt to theside can result in a false reading.

2. Check the coolant level in the cool-ant reservoir.

TIPThe coolant should be between theminimum and maximum level marks.

3. If the coolant is at or below theminimum level mark, remove theseat (See page 3-10.), and thenopen the coolant reservoir cap.

4. Add coolant or distilled water toraise the coolant to the specifiedlevel, close the coolant reservoircap, and then install the seat.WARNING! Remove only thecoolant reservoir cap. Never at-tempt to remove the radiatorcap when the engine is hot.[EWA15161] NOTICE: If coolant is notavailable, use distilled water orsoft tap water instead. Do notuse hard water or salt watersince it is harmful to the engine.If water has been used insteadof coolant, replace it with cool-ant as soon as possible, other-wise the cooling system will notbe protected against frost andcorrosion. If water has beenadded to the coolant, have aYamaha dealer check the anti-freeze content of the coolant assoon as possible, otherwise theeffectiveness of the coolant willbe reduced. [ECA10472]

1. Coolant reservoir2. Maximum level mark3. Minimum level mark

1. Coolant reservoir cap Coolant reservoir capacity:0.25 L (0.26 US qt, 0.22 Imp.qt)

U22BE2E0.book Page 12 Thursday, August 5, 2010 10:55 AM

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6-13

6

EAU33031

Changing the coolantThe coolant must be changed at the in-tervals specified in the periodic mainte-nance and lubrication chart. Have aYamaha dealer change the coolant.WARNING! Never attempt to removethe radiator cap when the engine ishot. [EWA10381]

EAUM2390

Replacing the air filter element and cleaning the check hose The air filter element should be re-placed at the intervals specified in theperiodic maintenance and lubricationchart. Have a Yamaha dealer replacethe air filter element more frequently ifyou are riding in unusually wet or dustyareas. In addition, the air filter checkhose must be frequently checked andcleaned if necessary.

To clean the air filter check hose1. Check the hose on the side of the

air filter case for accumulated dirtor water.

2. If dirt or water is visible, removethe hose, clean it, and then installit.

1. Air filter check hose

U22BE2E0.book Page 13 Thursday, August 5, 2010 10:55 AM

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6-14

6

EAUM1911

Adjusting the engine idling speed The engine idling speed must bechecked and, if necessary, adjusted asfollows at the intervals specified in theperiodic maintenance and lubricationchart.The engine should be warm beforemaking this adjustment.

TIPA diagnostic tachometer is needed tomake this adjustment.

1. Attach the tachometer to the sparkplug lead.

2. Check the engine idling speedand, if necessary, adjust it to spec-ification by turning the idle adjust-ing screw. To increase the engineidling speed, turn the screw in di-rection (a). To decrease the en-gine idling speed, turn the screw indirection (b).

TIPIf the specified idling speed cannot beobtained as described above, have aYamaha dealer make the adjustment.

EAU48432

Adjusting the throttle grip free play

The throttle grip free play should mea-sure 3.0–5.0 mm (0.12–0.20 in) at theinner edge of the throttle grip. Periodi-cally check the throttle grip free playand, if necessary, adjust it as follows.

TIPThe engine idling speed must be cor-rectly adjusted before checking and ad-justing the throttle grip free play.

1. Slide the rubber cover back.2. Loosen the locknut.

1. Idle adjusting screw

Engine idling speed:1400–1600 r/min 1. Throttle grip free play

U22BE2E0.book Page 14 Thursday, August 5, 2010 10:55 AM

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6-15

6

3. To increase the throttle grip freeplay, turn the adjusting nut in direc-tion (a). To decrease the throttlegrip free play, turn the adjustingnut in direction (b).

4. Tighten the locknut and then slidethe rubber cover to its original po-sition.

EAU21401

Valve clearance The valve clearance changes with use,resulting in improper air-fuel mixtureand/or engine noise. To prevent thisfrom occurring, the valve clearancemust be adjusted by a Yamaha dealerat the intervals specified in the periodicmaintenance and lubrication chart.

EAU21643

Tires To maximize the performance, durabil-ity, and safe operation of your motorcy-cle, note the following points regardingthe specified tires.

Tire air pressureThe tire air pressure should be checkedand, if necessary, adjusted before eachride.

WARNINGEWA10503

Operation of this vehicle with im-proper tire pressure may cause se-vere injury or death from loss ofcontrol.

� The tire air pressure must bechecked and adjusted on coldtires (i.e., when the temperatureof the tires equals the ambienttemperature).

� The tire air pressure must be ad-justed in accordance with theriding speed and with the totalweight of rider, passenger, car-go, and accessories approvedfor this model.

1. Locknut2. Adjusting nut

U22BE2E0.book Page 15 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-16

6WARNING

EWA10511

Never overload your vehicle. Opera-tion of an overloaded vehicle couldcause an accident.

Tire inspection

The tires must be checked before eachride. If the center tread depth reachesthe specified limit, if the tire has a nail orglass fragments in it, or if the sidewall iscracked, have a Yamaha dealer re-place the tire immediately.

TIPThe tire tread depth limits may differfrom country to country. Always complywith the local regulations.

Tire informationThis motorcycle is equipped with tubetires.

WARNINGEWA10461

The front and rear tires should be ofthe same make and design, other-wise the handling characteristics ofthe vehicle may be different, whichcould lead to an accident.

After extensive tests, only the tires list-ed below have been approved for thismodel by Yamaha Motor Co., Ltd.

Tire air pressure (measured on cold tires):

0–90 kg (0–198 lb):Front:

180 kPa (1.80 kgf/cm², 26 psi)Rear:

200 kPa (2.00 kgf/cm², 29 psi)90–185 kg (198–408 lb):

Front:200 kPa (2.00 kgf/cm², 29 psi)

Rear:225 kPa (2.25 kgf/cm², 33 psi)

Maximum load*:185 kg (408 lb)

* Total weight of rider, passenger, car-go and accessories

1. Tire sidewall2. Tire tread depth

Minimum tire tread depth (front and rear):

1.6 mm (0.06 in)

U22BE2E0.book Page 16 Thursday, August 5, 2010 10:55 AM

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6-17

6

WARNINGEWA10571

� Have a Yamaha dealer replaceexcessively worn tires. Besidesbeing illegal, operating the mo-torcycle with excessively worntires decreases riding stabilityand can lead to loss of control.

� The replacement of all wheel-and brake-related parts, includ-ing the tires, should be left to a

Yamaha dealer, who has thenecessary professional knowl-edge and experience.

� It is not recommended to patcha punctured tube. If unavoid-able, however, patch the tubevery carefully and replace it assoon as possible with a high-quality product.

� Ride at moderate speeds afterchanging a tire since the tiresurface must first be “brokenin” for it to develop its optimalcharacteristics.

EAU21943

Spoke wheels

WARNINGEWA10610

The wheels on this model are not de-signed for use with tubeless tires.Do not attempt to use tubeless tireson this model.

To maximize the performance, durabil-ity, and safe operation of your motorcy-cle, note the following points regardingthe specified wheels.

� The wheel rims should be checkedfor cracks, bends, warpage or oth-er damage, and the spokes forlooseness or damage before eachride. If any damage is found, havea Yamaha dealer replace thewheel. Do not attempt even thesmallest repair to the wheel. A de-formed or cracked wheel must bereplaced.

� The wheel should be balancedwhenever either the tire or wheelhas been changed or replaced. Anunbalanced wheel can result inpoor performance, adverse han-dling characteristics, and a short-ened tire life.

Front tire:Size:

WR125R 80/90-21M/C 48PWR125X 110/70-17M/C 54H

Manufacturer/model:WR125R PIRELLI / MT90 SCOR-PIONWR125X PIRELLI / SPORT DE-MONWR125R MICHELIN / SIRAC

Rear tire:Size:

WR125R 110/80-18 M/C 58PWR125X 140/70-17 M/C 66H

Manufacturer/model:WR125R PIRELLI / MT90 SCOR-PIONWR125X PIRELLI / SPORT DE-MONWR125R MICHELIN / SIRAC

U22BE2E0.book Page 17 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-18

6

EAU22043

Adjusting the clutch lever free play

The clutch lever free play should mea-sure 10.0–15.0 mm (0.39–0.59 in) asshown. Periodically check the clutch le-ver free play and, if necessary, adjust itas follows.

1. Slide the rubber cover back at theclutch lever.

2. Loosen the locknut.3. To increase the clutch lever free

play, turn the adjusting bolt in di-rection (a). To decrease the clutchlever free play, turn the adjustingbolt in direction (b).

TIPIf the specified clutch lever free playcould be obtained as described above,skip steps 4–7.

4. Fully turn the adjusting bolt at theclutch lever in direction (a) to loos-en the clutch cable.

5. Loosen the locknut at the crank-case.

6. To increase the clutch lever freeplay, turn the adjusting nut in direc-tion (a). To decrease the clutch le-ver free play, turn the adjusting nutin direction (b).

7. Tighten the locknut at the crank-case.

8. Tighten the locknut at the clutch le-ver and then slide the rubber coverto its original position.

1. Clutch lever free play adjusting bolt2. Clutch lever free play

1. Locknut2. Clutch lever free play adjusting nut (crank-

case)

U22BE2E0.book Page 18 Thursday, August 5, 2010 10:55 AM

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6-19

6

EAUT1221

Checking the front brake lever free play

The brake lever free play should mea-sure 2.0–5.0 mm (0.08–0.20 in) asshown. Periodically check the brake le-ver free play and, if necessary, have aYamaha dealer check the brake sys-tem.

WARNINGEWA10641

An incorrect brake lever free play in-dicates a hazardous condition in thebrake system. Do not operate the ve-hicle until the brake system hasbeen checked or repaired by aYamaha dealer.

EAUM1353

Adjusting the brake pedal free play

The brake pedal free play should mea-sure 3.5–4.5 mm (0.14–0.18 in) asshown. Periodically check the brakepedal free play and, if necessary, havea Yamaha dealer adjust it.

WARNINGEWAM1030

An incorrect brake pedal free playindicates a hazardous condition inthe brake system. Do not operate themotorcycle until the brake systemhas been checked or repaired by aYamaha dealer.

EAU22321

Checking the front and rear brake pads

Front brake

Rear brake

1. Brake lever free play 1. Brake pedal free play

1. Wear indicator groove

1. Wear indicator groove

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6-20

6

The front and rear brake pads must bechecked for wear at the intervals spec-ified in the periodic maintenance andlubrication chart. Each brake pad isprovided with a wear indicator groove,which allows you to check the brakepad wear without having to disassem-ble the brake. To check the brake padwear, check the wear indicatorgrooves. If a brake pad has worn to thepoint that the wear indicator groove hasalmost disappeared, have a Yamahadealer replace the brake pads as a set.

EAU22580

Checking the brake fluid level

Front brake

Rear brake

Insufficient brake fluid may allow air toenter the brake system, possibly caus-ing it to become ineffective.

Before riding, check that the brake fluidis above the minimum level mark andreplenish if necessary. A low brake fluidlevel may indicate worn brake padsand/or brake system leakage. If thebrake fluid level is low, be sure to checkthe brake pads for wear and the brakesystem for leakage.Observe these precautions:

� When checking the fluid level,make sure that the top of the brakefluid reservoir is level.

� Use only the recommended qualitybrake fluid, otherwise the rubberseals may deteriorate, causingleakage and poor braking perfor-mance.

� Refill with the same type of brakefluid. Mixing fluids may result in aharmful chemical reaction andlead to poor braking performance.

1. Minimum level mark

1. Minimum level mark

Recommended brake fluid:DOT 4

U22BE2E0.book Page 20 Thursday, August 5, 2010 10:55 AM

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6-21

6

� Be careful that water does not en-ter the brake fluid reservoir whenrefilling. Water will significantlylower the boiling point of the fluidand may result in vapor lock.

� Brake fluid may deteriorate paint-ed surfaces or plastic parts. Al-ways clean up spilled fluidimmediately.

� As the brake pads wear, it is nor-mal for the brake fluid level to grad-ually go down. However, if thebrake fluid level goes down sud-denly, have a Yamaha dealercheck the cause.

EAUM1360

Changing the brake fluid Have a Yamaha dealer change thebrake fluid at the intervals specified inthe periodic maintenance and lubrica-tion chart. In addition, have the brakehose replaced every four years orwhenever it is damaged or leaking.

EAU22760

Drive chain slack The drive chain slack should bechecked before each ride and adjustedif necessary.

EAU22773

To check the drive chain slack1. Place the motorcycle on the side-

stand.

TIPWhen checking and adjusting the drivechain slack, there should be no weighton the motorcycle.

2. Shift the transmission into the neu-tral position.

3. Move the rear wheel by pushingthe motorcycle to locate the tight-est portion of the drive chain, andthen measure the drive chain slackas shown.

Drive chain slack:40.0–50.0 mm (1.57–1.97 in)

U22BE2E0.book Page 21 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-22

6

4. If the drive chain slack is incorrect,adjust it as follows.

EAU22934

To adjust the drive chain slack1. Loosen the axle nut, then loosen

the locknut at each end of theswingarm.

2. To tighten the drive chain, turn thedrive chain slack adjusting nut ateach end of the swingarm in direc-tion (a). To loosen the drive chain,turn the adjusting nut at each endof the swingarm in direction (b),and then push the rear wheel for-ward. NOTICE: Improper drivechain slack will overload the en-gine as well as other vital parts

of the motorcycle and can leadto chain slippage or breakage.To prevent this from occurring,keep the drive chain slack with-in the specified limits. [ECA10571]

TIPUsing the alignment marks on eachside of the swingarm, make sure thatboth adjusting nuts are in the same po-sition for proper wheel alignment.

3. Tighten the locknuts, and thentighten the axle nut to the specifiedtorques.

1. Drive chain slack

1. Axle nut2. Drive chain slack adjusting nut3. Locknut4. Alignment marks

Tightening torques:Locknut:

16 Nm (1.6 m·kgf, 12 ft·lbf)Axle nut:

90 Nm (9.0 m·kgf, 65 ft·lbf)

U22BE2E0.book Page 22 Thursday, August 5, 2010 10:55 AM

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6-23

6

EAU23025

Cleaning and lubricating the drive chain The drive chain must be cleaned andlubricated at the intervals specified inthe periodic maintenance and lubrica-tion chart, otherwise it will quickly wearout, especially when riding in dusty orwet areas. Service the drive chain asfollows.

NOTICEECA10583

The drive chain must be lubricatedafter washing the motorcycle, ridingin the rain or riding in wet areas.

1. Clean the drive chain with kero-sene and a small soft brush.NOTICE: To prevent damagingthe O-rings, do not clean thedrive chain with steam cleaners,high-pressure washers or inap-propriate solvents. [ECA11121]

2. Wipe the drive chain dry.3. Thoroughly lubricate the drive

chain with a special O-ring chainlubricant. NOTICE: Do not useengine oil or any other lubri-cants for the drive chain, as they

may contain substances thatcould damage the O-rings.[ECA11111]

EAU23095

Checking and lubricating the cables The operation of all control cables andthe condition of the cables should bechecked before each ride, and the ca-bles and cable ends should be lubricat-ed if necessary. If a cable is damagedor does not move smoothly, have aYamaha dealer check or replace it.WARNING! Damage to the outerhousing of cables may result in in-ternal rusting and cause interfer-ence with cable movement. Replacedamaged cables as soon as possi-ble to prevent unsafe conditions.[EWA10711]

Recommended lubricant:Yamaha Chain and Cable Lube or engine oil

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-24

6

EAU23114

Checking and lubricating the throttle grip and cable The operation of the throttle grip shouldbe checked before each ride. In addi-tion, the cable should be lubricated by aYamaha dealer at the intervals speci-fied in the periodic maintenance chart.The throttle cable is equipped with arubber cover. Make sure that the coveris securely installed. Even though thecover is installed correctly, it does notcompletely protect the cable from waterentry. Therefore, use care not to pourwater directly onto the cover or cablewhen washing the vehicle. If the cableor cover becomes dirty, wipe clean witha moist cloth.

EAU23142

Checking and lubricating the brake and clutch levers

Brake lever

Clutch lever

The operation of the brake and clutchlevers should be checked before eachride, and the lever pivots should be lu-bricated if necessary.

Recommended lubricants:Brake lever:

Silicone greaseClutch lever:

Lithium-soap-based grease

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6-25

6

EAU23182

Checking and lubricating the brake pedal

The operation of the brake pedalshould be checked before each ride,and the pedal pivot should be lubricat-ed if necessary.

EAU23202

Checking and lubricating the sidestand

The operation of the sidestand shouldbe checked before each ride, and thesidestand pivot and metal-to-metalcontact surfaces should be lubricated ifnecessary.

WARNINGEWA10731

If the sidestand does not move upand down smoothly, have a Yamahadealer check or repair it. Otherwise,the sidestand could contact theground and distract the operator, re-sulting in a possible loss of control.

EAUM2700

Lubricating the swingarm piv-ots The swingarm pivots must be lubricat-ed at the intervals specified in the peri-odic maintenance and lubrication chart.

Recommended lubricant:Lithium-soap-based grease

Recommended lubricant:Lithium-soap-based grease

Recommended lubricant:Molybdenum disulfide grease

U22BE2E0.book Page 25 Thursday, August 5, 2010 10:55 AM

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EAU23272

Checking the front fork The condition and operation of the frontfork must be checked as follows at theintervals specified in the periodic main-tenance and lubrication chart.

To check the conditionCheck the inner tubes for scratches,damage and excessive oil leakage.

To check the operation1. Place the vehicle on a level sur-

face and hold it in an upright posi-tion. WARNING! To avoid injury,securely support the vehicle sothere is no danger of it fallingover. [EWA10751]

2. While applying the front brake,push down hard on the handlebarsseveral times to check if the frontfork compresses and reboundssmoothly.

NOTICEECA10590

If any damage is found or the frontfork does not operate smoothly,have a Yamaha dealer check or re-pair it.

EAU23283

Checking the steering Worn or loose steering bearings maycause danger. Therefore, the operationof the steering must be checked as fol-lows at the intervals specified in the pe-riodic maintenance and lubricationchart.

1. Place a stand under the engine toraise the front wheel off theground. (See page 6-32 for moreinformation.) WARNING! Toavoid injury, securely supportthe vehicle so there is no dangerof it falling over. [EWA10751]

2. Hold the lower ends of the frontfork legs and try to move them for-ward and backward. If any freeplay can be felt, have a Yamahadealer check or repair the steering.

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EAU23291

Checking the wheel bearings The front and rear wheel bearings mustbe checked at the intervals specified inthe periodic maintenance and lubrica-tion chart. If there is play in the wheelhub or if the wheel does not turnsmoothly, have a Yamaha dealer checkthe wheel bearings.

EAU23324

Battery A poorly maintained battery will corrodeand discharge quickly. The electrolytelevel, battery lead connections andbreather hose routing should bechecked before each ride and at the in-tervals specified in the periodic mainte-nance and lubrication chart.

WARNINGEWA10770

� Electrolyte is poisonous anddangerous since it contains sul-furic acid, which causes severeburns. Avoid any contact withskin, eyes or clothing and al-ways shield your eyes whenworking near batteries. In caseof contact, administer the fol-lowing FIRST AID.• EXTERNAL: Flush with plenty

of water.• INTERNAL: Drink large quan-

tities of water or milk and im-mediately call a physician.

• EYES: Flush with water for 15minutes and seek promptmedical attention.

� Batteries produce explosive hy-drogen gas. Therefore, keepsparks, flames, cigarettes, etc.,away from the battery and pro-vide sufficient ventilation whencharging it in an enclosedspace.

� Take care not to spill electrolyteon the drive chain, as this mayweaken it, shorten chain life andpossibly result in an accident.

� KEEP THIS AND ALL BATTER-IES OUT OF THE REACH OFCHILDREN.

To check the electrolyte level1. Place the vehicle on a level sur-

face and hold it in an upright posi-tion.

TIPMake sure that the vehicle is positionedstraight up when checking the electro-lyte level.

2. Remove panel A. (See page 6-7.)3. Check the electrolyte level in the

battery.

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6

TIPThe electrolyte should be between theminimum and maximum level marks.

4. If the electrolyte is at or below theminimum level mark, add distilledwater to raise it to the maximumlevel mark. NOTICE: Use onlydistilled water, as tap water con-tains minerals that are harmfulto the battery. [ECA10611]

5. Check and, if necessary, tightenthe battery lead connections andcorrect the breather hose routing.

6. Install the panel.

To store the battery1. If the vehicle will not be used for

more than one month, remove thebattery, fully charge it, and thenplace it in a cool, dry place.NOTICE: When removing thebattery, be sure the key isturned to “OFF”, then discon-nect the negative lead beforedisconnecting the positive lead.[ECA16302]

2. If the battery will be stored for morethan two months, check the specif-ic gravity of the electrolyte at leastonce a month and fully charge thebattery whenever necessary.

3. Fully charge the battery before in-stallation.

4. After installation, make sure thatthe battery leads are properly con-nected to the battery terminals andthat the breather hose is properlyrouted, in good condition, and notobstructed. NOTICE: If thebreather hose is positioned insuch a way that the frame is ex-posed to electrolyte or gas ex-

pelled from the battery, theframe could suffer structuraland external damages. [ECA10601]

1. Maximum level mark2. Minimum level mark

12+UPPER

LOWER

ZAUM0106

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-29

6

EAUM2600

Replacing the fuses

The fuse box is located behind panel A.(See page 6-7.)If a fuse is blown, replace it as follows.

1. Turn the key to “OFF” and turn offthe electrical circuit in question.

2. Remove the blown fuse, and theninstall a new fuse of the specifiedamperage. WARNING! Do notuse a fuse of a higher amperagerating than recommended to

avoid causing extensive dam-age to the electrical system andpossibly a fire. [EWA15131]

3. Turn the key to “ON” and turn onthe electrical circuit in question tocheck if the device operates.

4. If the fuse immediately blowsagain, have a Yamaha dealercheck the electrical system.

EAU45213

Replacing the headlight bulb This model is equipped with a quartzbulb headlight. If the headlight bulbburns out, replace it as follows.

NOTICEECA10650

Take care not to damage the follow-ing parts:

� Headlight bulbDo not touch the glass part ofthe headlight bulb to keep it freefrom oil, otherwise the transpar-ency of the glass, the luminosityof the bulb, and the bulb life willbe adversely affected. Thor-oughly clean off any dirt and fin-gerprints on the headlight bulbusing a cloth moistened with al-cohol or thinner.

� Headlight lensDo not affix any type of tintedfilm or stickers to the headlightlens.Do not use a headlight bulb of awattage higher than specified.

1. Fuse box2. Spare fuse3. Main fuse4. Headlight fuse5. Signaling system fuse6. Ignition fuse7. Radiator fan fuse

Specified fuses:Main fuse:

20.0 AIgnition fuse:

7.5 ASignaling system fuse:

7.5 AHeadlight fuse:

15.0 ARadiator fan fuse:

5.0 A

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-30

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1. Remove the headlight cowling to-gether with the headlight unit byremoving the bolts and pulling up-ward as shown.

2. Disconnect the headlight coupler,and then remove the bulb cover.

3. Unhook the headlight bulb holder,and then remove the burnt-outbulb.

4. Place a new headlight bulb into po-sition, and then secure it with thebulb holder.

5. Install the headlight bulb cover,and then connect the coupler.

6. Install the headlight cowling (to-gether with the headlight unit) byplacing it in the original position,and then installing the bolts.

7. Have a Yamaha dealer adjust theheadlight beam if necessary.

1. Do not touch the glass part of the bulb.

1. Bolt

1

1

1. Headlight coupler2. Bulb cover

1. Headlight bulb holder

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-31

6

EAUM2610

Replacing a tail/brake light bulb

1. Remove panel B. (See page 6-7.)2. Remove the socket (together with

the bulb) by turning it counter-clockwise.

3. Remove the burnt-out bulb bypushing it in and turning it counter-clockwise.

4. Insert a new bulb into the socket,push it in, and then turn it clock-wise until it stops.

5. Install the socket (together with thebulb) by turning it clockwise.

6. Install the panel.

EAU24204

Replacing a turn signal light bulb

1. Remove the turn signal light lensby removing the screw.

2. Remove the burnt-out bulb bypushing it in and turning it counter-clockwise.

3. Insert a new bulb into the socket,push it in, and then turn it clock-wise until it stops.

4. Install the lens by installing thescrew. NOTICE: Do not over-tighten the screw, otherwise thelens may break. [ECA11191]

EAUM2620

Replacing the license plate light bulb

1. Remove panel B. (See page 6-7.)2. Remove the socket (together with

the bulb) by pulling it out.

3. Remove the burnt-out bulb by pull-ing it out.

4. Insert a new bulb into the socket.5. Install the socket (together with the

bulb) by pushing it in.6. Install the panel.

1. Tail/brake light bulb socket

1. Screw2. Turn signal light lens 1. License plate light bulb

U22BE2E0.book Page 31 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-32

6

EAU45222

Replacing an auxiliary light bulb If the auxiliary light bulb burns out, re-place it as follows.

1. Remove the headlight unit. (Seepage 6-29.)

2. Remove the auxiliary light socket(together with the bulb) by pulling itout.

3. Remove the burnt-out bulb by pull-ing it out.

4. Insert a new bulb into the socket.5. Install the auxiliary light socket (to-

gether with the bulb) by pushing itin.

6. Install the headlight unit.

EAU24350

Supporting the motorcycle Since this model is not equipped with acenterstand, follow these precautionswhen removing the front and rearwheel or performing other maintenancerequiring the motorcycle to stand up-right. Check that the motorcycle is in astable and level position before startingany maintenance. A strong woodenbox can be placed under the engine foradded stability.

To service the front wheel1. Stabilize the rear of the motorcycle

by using a motorcycle stand or, ifan additional motorcycle stand isnot available, by placing a jack un-der the frame in front of the rearwheel.

2. Raise the front wheel off theground by using a motorcyclestand.

To service the rear wheelRaise the rear wheel off the ground byusing a motorcycle stand or, if a motor-cycle stand is not available, by placing

a jack either under each side of theframe in front of the rear wheel or undereach side of the swingarm.

1. Auxiliary light bulb

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6-33

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EAU24360

Front wheel

EAUM2632

To remove the front wheel

WARNINGEWA10821

To avoid injury, securely support thevehicle so there is no danger of itfalling over.

1. Loosen the front wheel axle pinchbolts, then the wheel axle and thebrake caliper bolts. 2. Lift the front wheel off the ground

according to the procedure onpage 6-32.

3. Remove the speed sensor leadholder by removing the screw(WR125R only).

4. Remove the brake caliper by re-moving the bolts.

5. Pull the wheel axle out, remove thespeed sensor by pulling it out, andthen remove the wheel. NOTICE:Do not apply the brake after thebrake calipers have been re-moved, otherwise the brakepads will be forced shut. [ECA11051]

EAUM2640

To install the front wheel1. Lift the wheel up between the fork

legs.2. Install the speed sensor at the

wheel hub.

TIPMake sure that the projections on thespeed sensor rotor are aligned with thenotches in the wheel hub and that theslot in the speed sensor fits over the re-tainer on the fork leg.

3. Insert the wheel axle.4. Lower the front wheel so that it is

on the ground.

1. Front wheel axle pinch bolt2. Wheel axle3. Speed sensor cable holder

1. Brake caliper2. Brake caliper bolt

1. Speed sensor

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-34

6

5. Push down hard on the handlebarseveral times to check for properfork operation.

6. Install the brake caliper by install-ing the bolts.

TIPMake sure that there is enough spacebetween the brake pads before install-ing the brake caliper onto the brakedisc.

7. Install the speed sensor lead hold-er by installing the screw(WR125R only).

8. Tighten the wheel axle, front wheelaxle pinch bolts and brake caliperbolts to their specified torques.

EAU25080

Rear wheel

EAUM2661

To remove the rear wheel

WARNINGEWA10821

To avoid injury, securely support thevehicle so there is no danger of itfalling over.

1. Loosen the locknut and drive chainslack adjusting nut on each side ofthe swingarm.

2. Loosen the axle nut.

3. Lift the rear wheel off the groundaccording to the procedure onpage 6-32.

4. Remove the axle nut and the leftdrive chain alignment plate.

5. Push the wheel forward, and thenremove the drive chain from therear sprocket.

TIP� If the drive chain is difficult to re-

move, remove the wheel axle first,and then lift the wheel upwardenough to remove the drive chainfrom the rear sprocket.

� The drive chain does not need tobe disassembled in order to re-move and install the rear wheel.

6. While supporting the brake caliperand slightly lifting the wheel, pullthe wheel axle out together withthe right drive chain alignmentplate.

Tightening torques:Wheel axle:

58 Nm (5.8 m·kgf, 42 ft·lbf)Front wheel axle pinch bolt:

20 Nm (2.0 m·kgf, 14 ft·lbf)Brake caliper bolt:

30 Nm (3.0 m·kgf, 22 ft·lbf) 1. Axle nut2. Drive chain slack adjusting nut3. Locknut

U22BE2E0.book Page 34 Thursday, August 5, 2010 10:55 AM

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PERIODIC MAINTENANCE AND ADJUSTMENT

6-35

6

TIPA rubber mallet may be useful to tap thewheel axle out.

7. Remove the wheel. NOTICE: Donot apply the brake after thewheel has been removed to-gether with the brake disc, oth-erwise the brake pads will beforced shut. [ECA11071]

EAUM2652

To install the rear wheel1. Install the drive chain onto the rear

sprocket.

2. Install the wheel, the drive chainalignment plates and the brakecaliper bracket by inserting thewheel axle from the right-handside.

TIP� Install the drive chain alignment

plate with the “N” mark on the leftside, and be sure the mark is fac-ing outward.

� Make sure that the slot in the brakecaliper bracket is fit over the retain-er on the swingarm.

� Make sure that there is enoughspace between the brake pads be-fore installing the wheel.

3. Install the axle nut.4. Lower the rear wheel so that it is

on the ground.5. Adjust the drive chain slack. (See

page 6-21.)6. Tighten the axle nut to the speci-

fied torque.

1. Wheel axle

1. Retainer2. Slot

Tightening torque:Axle nut:

90 Nm (9.0 m·kgf, 65 ft·lbf)

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6

EAU25871

Troubleshooting Although Yamaha motorcycles receivea thorough inspection before shipmentfrom the factory, trouble may occur dur-ing operation. Any problem in the fuel,compression, or ignition systems, forexample, can cause poor starting andloss of power.The following troubleshooting chartsrepresent quick and easy proceduresfor checking these vital systems your-self. However, should your motorcyclerequire any repair, take it to a Yamahadealer, whose skilled technicians havethe necessary tools, experience, andknow-how to service the motorcycleproperly.Use only genuine Yamaha replace-ment parts. Imitation parts may look likeYamaha parts, but they are often inferi-or, have a shorter service life and canlead to expensive repair bills.

WARNINGEWA15141

When checking the fuel system, donot smoke, and make sure there areno open flames or sparks in the ar-ea, including pilot lights from water

heaters or furnaces. Gasoline orgasoline vapors can ignite or ex-plode, causing severe injury orproperty damage.

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EAUM2441

Troubleshooting charts

Starting problems or poor engine performance

Check the fuel level inthe fuel tank.

1. FuelThere is enough fuel.

There is no fuel.

Check the compression.

Supply fuel.

Operate the electric starter.

2. CompressionThere is compression.

There is no compression.

Check the ignition.

Have a Yamaha dealercheck the vehicle.

Remove the spark plugand check the electrodes.

3. IgnitionWet

Dry

Wipe off with a dry cloth and correct the spark plug gap, or replace the spark plug.

Have a Yamaha dealer check the vehicle. The engine does not start.Check the battery.

Operate the electric starter.

Operate the electric starter.

4. Battery The engine turns over quickly.

The engine turns over slowly.

The battery is good.

Check the electrolyte and batterylead connections, and charge thebattery if necessary.

The engine does not start. Have a Yamaha dealer check the vehicle.

The engine does not start. Check the compression.

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6

Engine overheating

WARNINGEWA10400

� Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may beblown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.

� After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and thenslowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.

TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas soon as possible.

Wait until the engine has cooled.

Check the coolant level in the reservoir and radiator.

The coolant level is OK.

The coolant level is low.Check the cooling systemfor leakage.

Have a Yamaha dealer checkand repair the cooling system.

Add coolant. (See TIP.)

Start the engine. If the engine overheats again, have a Yamaha dealer check and repair the cooling system.

There isleakage.

There is no leakage.

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MOTORCYCLE CARE AND STORAGE

7-1

7

EAU26004

Care While the open design of a motorcyclereveals the attractiveness of the tech-nology, it also makes it more vulnera-ble. Rust and corrosion can developeven if high-quality components areused. A rusty exhaust pipe may go un-noticed on a car, however, it detractsfrom the overall appearance of a motor-cycle. Frequent and proper care doesnot only comply with the terms of thewarranty, but it will also keep your mo-torcycle looking good, extend its lifeand optimize its performance.

Before cleaning1. Cover the muffler outlet with a

plastic bag after the engine hascooled down.

2. Make sure that all caps and coversas well as all electrical couplersand connectors, including thespark plug cap, are tightly in-stalled.

3. Remove extremely stubborn dirt,like oil burnt onto the crankcase,with a degreasing agent and abrush, but never apply such prod-

ucts onto seals, gaskets, sprock-ets, the drive chain and wheelaxles. Always rinse the dirt and de-greaser off with water.

Cleaning

NOTICEECA10772

� Avoid using strong acidic wheelcleaners, especially on spokedwheels. If such products areused on hard-to-remove dirt, donot leave the cleaner on the af-fected area any longer than in-structed. Also, thoroughly rinsethe area off with water, immedi-ately dry it, and then apply a cor-rosion protection spray.

� Improper cleaning can damageplastic parts (such as cowlings,panels, windshields, headlightlenses, meter lenses, etc.) andthe mufflers. Use only a soft,clean cloth or sponge with wa-ter to clean plastic. However, ifthe plastic parts cannot be thor-oughly cleaned with water, di-luted mild detergent with watermay be used. Be sure to rinse

off any detergent residue usingplenty of water, as it is harmfulto plastic parts.

� Do not use any harsh chemicalproducts on plastic parts. Besure to avoid using cloths orsponges which have been incontact with strong or abrasivecleaning products, solvent orthinner, fuel (gasoline), rust re-movers or inhibitors, brake flu-id, antifreeze or electrolyte.

� Do not use high-pressure wash-ers or steam-jet cleaners sincethey cause water seepage anddeterioration in the following ar-eas: seals (of wheel and swing-arm bearings, fork and brakes),electric components (couplers,connectors, instruments,switches and lights), breatherhoses and vents.

� For motorcycles equipped witha windshield: Do not use strongcleaners or hard sponges asthey will cause dulling orscratching. Some cleaning com-pounds for plastic may leavescratches on the windshield.

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MOTORCYCLE CARE AND STORAGE

7-2

7

Test the product on a small hid-den part of the windshield tomake sure that it does not leaveany marks. If the windshield isscratched, use a quality plasticpolishing compound afterwashing.

After normal useRemove dirt with warm water, a milddetergent, and a soft, clean sponge,and then rinse thoroughly with cleanwater. Use a toothbrush or bottlebrushfor hard-to-reach areas. Stubborn dirtand insects will come off more easily ifthe area is covered with a wet cloth fora few minutes before cleaning.

After riding in the rain, near the sea oron salt-sprayed roadsSince sea salt or salt sprayed on roadsduring winter are extremely corrosive incombination with water, carry out thefollowing steps after each ride in therain, near the sea or on salt-sprayedroads.

TIPSalt sprayed on roads in the winter mayremain well into spring.

1. Clean the motorcycle with cold wa-ter and a mild detergent, after theengine has cooled down.NOTICE: Do not use warm watersince it increases the corrosiveaction of the salt. [ECA10791]

2. Apply a corrosion protection sprayon all metal, including chrome- andnickel-plated, surfaces to preventcorrosion.

After cleaning1. Dry the motorcycle with a chamois

or an absorbing cloth.2. Immediately dry the drive chain

and lubricate it to prevent it fromrusting.

3. Use a chrome polish to shinechrome, aluminum and stainless-steel parts, including the exhaustsystem. (Even the thermally in-duced discoloring of stainless-steel exhaust systems can be re-moved through polishing.)

4. To prevent corrosion, it is recom-mended to apply a corrosion pro-tection spray on all metal,including chrome- and nickel-plat-ed, surfaces.

5. Use spray oil as a universal clean-er to remove any remaining dirt.

6. Touch up minor paint damagecaused by stones, etc.

7. Wax all painted surfaces.8. Let the motorcycle dry completely

before storing or covering it.

WARNINGEWA11131

Contaminants on the brakes or tirescan cause loss of control.

� Make sure that there is no oil orwax on the brakes or tires.

� If necessary, clean the brakediscs and brake linings with aregular brake disc cleaner or ac-etone, and wash the tires withwarm water and a mild deter-gent. Before riding at higherspeeds, test the motorcycle’sbraking performance and cor-nering behavior.

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MOTORCYCLE CARE AND STORAGE

7-3

7

NOTICEECA10800

� Apply spray oil and wax spar-ingly and make sure to wipe offany excess.

� Never apply oil or wax to anyrubber and plastic parts, buttreat them with a suitable careproduct.

� Avoid using abrasive polishingcompounds as they will wearaway the paint.

TIP� Consult a Yamaha dealer for ad-

vice on what products to use.� Washing, rainy weather or humid

climates can cause the headlightlens to fog. Turning the headlighton for a short period of time willhelp remove the moisture from thelens.

EAU43202

Storage

Short-termAlways store your motorcycle in a cool,dry place and, if necessary, protect itagainst dust with a porous cover. Besure the engine and the exhaust sys-tem are cool before covering the motor-cycle.

NOTICEECA10810

� Storing the motorcycle in apoorly ventilated room or cover-ing it with a tarp, while it is stillwet, will allow water and humid-ity to seep in and cause rust.

� To prevent corrosion, avoiddamp cellars, stables (becauseof the presence of ammonia)and areas where strong chemi-cals are stored.

Long-termBefore storing your motorcycle for sev-eral months:

1. Follow all the instructions in the“Care” section of this chapter.

2. Fill up the fuel tank and add fuelstabilizer (if available) to preventthe fuel tank from rusting and thefuel from deteriorating.

3. Perform the following steps to pro-tect the cylinder, piston rings, etc.from corrosion.a. Remove the spark plug cap

and spark plug.b. Pour a teaspoonful of engine oil

into the spark plug bore.c. Install the spark plug cap onto

the spark plug, and then placethe spark plug on the cylinderhead so that the electrodes aregrounded. (This will limit spark-ing during the next step.)

d. Turn the engine over severaltimes with the starter. (This willcoat the cylinder wall with oil.)

e. Remove the spark plug capfrom the spark plug, and theninstall the spark plug and thespark plug cap. WARNING! Toprevent damage or injuryfrom sparking, make sure toground the spark plug elec-trodes while turning the en-gine over. [EWA10951]

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MOTORCYCLE CARE AND STORAGE

7-4

7

4. Lubricate all control cables and thepivoting points of all levers andpedals as well as of the side-stand/centerstand.

5. Check and, if necessary, correctthe tire air pressure, and then liftthe motorcycle so that both of itswheels are off the ground. Alterna-tively, turn the wheels a little everymonth in order to prevent the tiresfrom becoming degraded in onespot.

6. Cover the muffler outlet with aplastic bag to prevent moisturefrom entering it.

7. Remove the battery and fullycharge it. Store it in a cool, dryplace and charge it once a month.Do not store the battery in an ex-cessively cold or warm place [lessthan 0 °C (30 °F) or more than 30°C (90 °F)]. For more informationon storing the battery, see page6-27.

TIPMake any necessary repairs beforestoring the motorcycle.

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SPECIFICATIONS

8-1

8

Dimensions:Overall length:

WR125R 2125 mm (83.7 in)WR125X 2085 mm (82.1 in)

Overall width:835 mm (32.9 in)

Overall height:WR125R 1285 mm (50.6 in)WR125X 1225 mm (48.2 in)

Seat height:WR125R 930 mm (36.6 in)WR125X 875 mm (34.4 in)

Wheelbase:WR125R 1430 mm (56.3 in)WR125X 1415 mm (55.7 in)

Ground clearance:WR125R 265 mm (10.43 in)WR125X 227 mm (8.94 in)

Minimum turning radius:WR125R 2200 mm (86.6 in)WR125X 2250 mm (88.6 in)

Weight:Curb weight:

WR125R 133 kg (293 lb)WR125X 137 kg (302 lb)

Engine:Engine type:

Liquid cooled 4-stroke, SOHCCylinder arrangement:

Single cylinderDisplacement:

124 cm³Bore × stroke:

52.0 × 58.6 mm (2.05 × 2.31 in)

Compression ratio:11.20 :1

Starting system:Electric starter

Lubrication system:Wet sump

Engine oil:Type:

SAE 10W-30, SAE 10W-40, SAE 15W-40, SAE 20W-40 or SAE 20W-50

Recommended engine oil grade:API service SG type or higher, JASO standard MA

Engine oil quantity:Without oil filter element replacement:

0.95 L (1.00 US qt, 0.84 Imp.qt)With oil filter element replacement:

1.00 L (1.06 US qt, 0.88 Imp.qt)Cooling system:

Coolant reservoir capacity (up to the maximum level mark):

0.25 L (0.26 US qt, 0.22 Imp.qt)

Radiator capacity (including all routes):1.10 L (1.16 US qt, 0.97 Imp.qt)

Air filter:Air filter element:

Dry elementFuel:

Recommended fuel:Premium unleaded gasoline only

Fuel tank capacity:8.5 L (2.25 US gal, 1.87 Imp.gal)

Fuel reserve amount:1.6 L (0.42 US gal, 0.35 Imp.gal)

Fuel injection:Throttle body:

ID mark:5D71 00

Spark plug(s):Manufacturer/model:

NGK/CR8ESpark plug gap:

0.7–0.8 mm (0.028–0.031 in)Clutch:

Clutch type:Wet, multiple-disc

Transmission:Primary reduction ratio:

73/24 (3.042)Final drive:

ChainSecondary reduction ratio:

53/14 (3.786)Transmission type:

Constant mesh 6-speed

-20 -10 0 10 20 30 40 50 ˚C

SAE 10W-30

SAE 15W-40

SAE 20W-40

SAE 20W-50

SAE 10W-40

SAE 10W-50

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SPECIFICATIONS

8-2

8

Operation:Left foot operation

Gear ratio:1st:

34/12 (2.833)2nd:

30/16 (1.875)3rd:

30/22 (1.364)4th:

24/21 (1.143)5th:

22/23 (0.957)6th:

21/25 (0.840)Chassis:

Frame type:Double cradle

Caster angle:WR125R 27.00 °WR125X 25.50 °

Trail:WR125R 107 mm (4.2 in)WR125X 76 mm (3.0 in)

Front tire:Type:

With tubeSize:

WR125R 80/90-21M/C 48PWR125X 110/70-17M/C 54H

Manufacturer/model:WR125R PIRELLI / MT90 SCORPIONWR125X PIRELLI / SPORT DEMON

Manufacturer/model:WR125R MICHELIN / SIRAC

Rear tire:Type:

With tubeSize:

WR125R 110/80-18 M/C 58PWR125X 140/70-17 M/C 66H

Manufacturer/model:WR125R PIRELLI / MT90 SCORPIONWR125X PIRELLI / SPORT DEMON

Manufacturer/model:WR125R MICHELIN / SIRAC

Loading:Maximum load:

185 kg (408 lb)(Total weight of rider, passenger, cargo and accessories)

Tire air pressure (measured on cold tires):

Loading condition:0–90 kg (0–198 lb)Front:

180 kPa (1.80 kgf/cm², 26 psi)Rear:

200 kPa (2.00 kgf/cm², 29 psi)Loading condition:

90–185 kg (198–408 lb)Front:

200 kPa (2.00 kgf/cm², 29 psi)Rear:

225 kPa (2.25 kgf/cm², 33 psi)

Front wheel:Wheel type:

Spoke wheelRim size:

WR125R 21x1.6WR125X 17x3

Rear wheel:Wheel type:

Spoke wheelRim size:

WR125R 18 x 2.15WR125X 17 x MT3.5

Front brake:Type:

Single disc brakeOperation:

Right hand operationRecommended fluid:

DOT 4Rear brake:

Type:Single disc brake

Operation:Right foot operation

Recommended fluid:DOT 4

Front suspension:Type:

Telescopic forkSpring/shock absorber type:

Coil spring/oil damperWheel travel:

WR125R 240.0 mm (9.45 in)WR125X 170.0 mm (6.69 in)

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SPECIFICATIONS

8-3

8

Rear suspension:Type:

Swingarm (link suspension)Spring/shock absorber type:

WR125R Coil spring/gas-oil damperWR125X Coil spring/oil damper

Wheel travel:WR125R 230.0 mm (9.06 in)WR125X 185.0 mm (7.28 in)

Electrical system:Ignition system:

TCICharging system:

AC magnetoBattery:

Model:12N5.5-4A

Voltage, capacity:12 V, 5.5 Ah

Headlight:Bulb type:

Halogen bulbBulb voltage, wattage × quantity:

Headlight:12 V, 35 W/35 W × 1

Tail/brake light:12 V, 21.0 W/5.0 W × 1

Front turn signal light:12 V, 10.0 W × 2

Rear turn signal light:12 V, 10.0 W × 2

Auxiliary light:12 V, 5.0 W × 1

License plate light:12 V, 5.0 W × 1

Meter lighting:LED

Neutral indicator light:LED

High beam indicator light:LED

Turn signal indicator light:LED

Coolant temperature warning light:LED

Engine trouble warning light:LED

Fuses:Main fuse:

20.0 AHeadlight fuse:

15.0 ASignaling system fuse:

7.5 AIgnition fuse:

7.5 ARadiator fan fuse:

5.0 A

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CONSUMER INFORMATION

9-1

9

EAU48611

Identification numbers Record the vehicle identification num-ber and model label information in thespaces provided below for assistancewhen ordering spare parts from aYamaha dealer or for reference in casethe vehicle is stolen.VEHICLE IDENTIFICATION NUMBER:

MODEL LABEL INFORMATION:

EAU26400

Vehicle identification number

The vehicle identification number isstamped into the steering head pipe.Record this number in the space pro-vided.

TIPThe vehicle identification number isused to identify your motorcycle andmay be used to register your motorcy-cle with the licensing authority in yourarea.

EAU26540

Model label

The model label is affixed to the frameunder the seat. (See page 3-10.)Record the information on this label inthe space provided. This informationwill be needed when ordering spareparts from a Yamaha dealer.

1. Vehicle identification number

1

1. Model label

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INDEXA

Air filter element and check hose, replacing and cleaning........................ 6-13

Auxiliary light bulb, replacing ................ 6-32B

Battery................................................... 6-27Brake and clutch levers, checking and

lubricating ........................................... 6-24Brake fluid, changing ............................ 6-21Brake fluid level, checking .................... 6-20Brake lever.............................................. 3-6Brake pedal............................................. 3-7Brake pedal, checking and

lubricating ........................................... 6-25Brake pedal free play, adjusting............ 6-19

CCables, checking and lubricating .......... 6-23Care ........................................................ 7-1Catalytic converters ................................ 3-9Clutch lever ............................................. 3-6Clutch lever free play, adjusting............ 6-18Coolant.................................................. 6-12Coolant temperature warning light .......... 3-2

DDimmer switch ........................................ 3-5Drive chain, cleaning and lubricating .... 6-23Drive chain slack................................... 6-21

EEngine break-in....................................... 5-3Engine idling speed............................... 6-14Engine oil and oil filter element ............... 6-9Engine stop switch .................................. 3-5Engine trouble warning light.................... 3-3

FFront and rear brake pads, checking.... 6-19Front brake lever free play, checking ... 6-19Front fork, checking .............................. 6-26Fuel......................................................... 3-8Fuel consumption, tips for reducing........ 5-3Fuel tank cap .......................................... 3-7Fuses, replacing ................................... 6-29

HHandlebar switches ................................ 3-5Headlight bulb, replacing ...................... 6-29High beam indicator light ........................ 3-2Horn switch............................................. 3-5

IIdentification numbers ............................ 9-1Ignition circuit cut-off system ................ 3-12Indicator and warning lights.................... 3-2

LLicense plate light bulb, replacing ........ 6-31

MMain switch/steering lock........................ 3-1Maintenance and lubrication, periodic .... 6-3Maintenance, emission control system... 6-2Model label ............................................. 9-1Multi-function display .............................. 3-3

NNeutral indicator light.............................. 3-2

PPanels, removing and installing.............. 6-7Parking ................................................... 5-4Part locations.......................................... 2-1Pass switch............................................. 3-5

SSafety information................................... 1-1

Seat.......................................................3-10Shifting ....................................................5-2Shift pedal ...............................................3-6Shock absorber assembly, adjusting ....3-10Sidestand ..............................................3-11Sidestand, checking and lubricating......6-25Spark plug, checking...............................6-8Specifications ..........................................8-1Starting the engine ..................................5-1Start switch..............................................3-5Steering, checking.................................6-26Storage....................................................7-3Supporting the motorcycle ....................6-32Swingarm pivots, lubricating .................6-25

TTail/brake light bulb, replacing ..............6-31Throttle grip and cable, checking and

lubricating ...........................................6-24Throttle grip free play, adjusting............6-14Tires ......................................................6-15Tool kit.....................................................6-1Troubleshooting ....................................6-36Troubleshooting charts..........................6-37Turn signal indicator light ........................3-2Turn signal light bulb, replacing ............6-31Turn signal switch ...................................3-5

VValve clearance.....................................6-15Vehicle identification number ..................9-1

WWheel bearings, checking .....................6-27Wheel (front) .........................................6-33Wheel (rear) ..........................................6-34Wheels ..................................................6-17

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YAMAHA MOTOR CO., LTD.PRINTED IN FRANCE

2010.08 (E)

PANTONE285CVC