NATIONAL MOWER CO. 700 Raymond Ave., P.O. Box 14299, St. Paul, Minnesota 55114-0299, U.S.A.Phone (651) 646-4079 – Fax (651) 646-2887

www.nationalmower.com

MARCH 2006

I-TRIM

OWNER'S MANUALIncludes Specifications, Assembly, Operation,

Maintenance & Parts Lists

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TABLE OF CONTENTSTable of contents ...................................................... 3

Introduction ............................................................... 4

Safe Operating Practices ...................................... 4-6

Decal (Transfer) Identification ............................... 7-9

Introduction and Receipt of Shipment ................... 10

1— Specifications ................................................... 11

2— Assembly Instructions ...................................... 12

3—General Information .......................................... 15

4—Controls ............................................................. 16

5—Operation .......................................................... 18

6—Adjustments ...................................................... 20

7—Maintenance ....................................................... 22

8—Storage ................................................................ 28

9—Troubleshooting .................................................. 29

Wiring Diagram.........................................................33

Maintenance Record.................................................34

10—Parts Ordering Information ............................... 35Screen box, guards, ROPS................... 36-37Deck Lift Arms and Pull Arms ............... 38-39Seat, Wheels, Engine, Radiator, tank 340-41Wheel Motors, Filters, Hyd Comp. ....... 42-43Pedal Assy, Hyd Pumps ....................... 44-45Front Axle, Fuel Tank, Frame ............... 46-47Engine and Radiator Assembly ................. 48Rear Mower Deck Assembly ...................... 49Right Mower Deck Assembly ..................... 50Left Mower Deck Assembly ....................... 51Hydraulics- Deck Motors/Oil Cooler ..... 52-53Hydraulics - Wheel Motors/Steering ..... 54-55Electrical System Components...................56Steering Cylinder........................................57

Hydraulic Schematic - Steering/Drive.......................58Hydraulic Schematic - Mower Drives/Deck Lift.........59Warrenty...................................................................61

Appendix 1- Briggs & Stratton Operating Instructions

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INTRODUCTIONRead this manual carefully to learn how to operate andmaintain your product properly. The information in thismanual can help you and others avoid injury and productdamage. The operator is responsible for operating thisproduct properly and safely.This manual identifies potential hazards and has specialsafety messages that help you and avoid personal injury andeven death. Danger, Warning, and Caution are signal wordsused to identify the level of hazard. Howerver, regardless ofthe hazard, be extremely careful.

Danger signals an extreme hazard that will cause seriesinjury or death if you do not follow the recommendedprecautions.

Warning signals a hazard that may cause serious injury ordeath if you do not follow the recommended precautions.

Caution signals a hazard that may cause minor or moderateinjury if you do not follow the recommended precautions.

This manual uses two other words to highlight information.Important call attention to special mechanical informationand Note: emphasizes general information worthy of specialattention.

SAFETYThis machine meets or exceeds ANSI B71.4-1999 specifica-tions in effect at the time of production.Improper use or maintenance by the operator or owner canresult in injury. To reduce the potential for injury, comply withthese safety instructions and always pay attention to thesafety alert symbols: CAUTION, WARNING, and DANGER.Failure to comply with the instruction may result in personalinjury or death.

Safe Operating PracticesThe following instructions are from CEN standard EN836:1997, ISO standard 5395: 1990, and ANSI B71.4-1999.

Training• Read the Operator’s Manual and other training material

carefully. Be familiar with the controls, safety signs, andthe proper use of the equipment.

• Never allow children or people unfamiliar with theseinstructions to use or service the mower. Localregulations may restrict the age of the operator.

• Never mow while people, especially children, or pets arenearby.

• Do not carry passengers.

• Keep in mind that the operator or user is responsible foraccidents or hazards occurring to other people or theirproperty.

• All drivers and mechanics should seek and obtainprofessional and practical instruction. The owner isresponsible for training the users. Such instructionshould emphasize:

- the need for care and concentration when working withride-on machines;

- the owner/user can prevent and is responsible foraccidents or injuries occurring to himself or herself, otherpeople, or property;

- control of a ride-on machine sliding on a slope will notbe regained by the application of the brake or puttingtransmission into neutral. Some reasons for loss ofcontrol are: insufficient wheel grip, driving too fast,inadequate braking, using a machine that is unsuitablefor a task, lack of awareness of the effect of groundconditions (especially slopes), and incorrect loaddistribution.

Preparation

• Evaluate the terrain to determine what accessories andattachments are needed to properly and safely performthe job. Only use accessories and attachments approvedby the manufacturer.

• While mowing, always wear substantial footwear, longtrousers, hard hat, safety glasses, and ear protection.Long hair, loose clothing, or jewelry may get tangled inmoving parts. Do not operate the equipment whenbarefoot or wearing open sandals.

• Thoroughly inspect the area where the equipment is tobe used and remove all objects which may be thrown bythe machine.

• Check that operator’s presence controls, safetyswitches, and shields are attached and functioningproperly. Do not operate unless they are functioningproperly.

• Warning - Fuel is highly flammable. Take the followingprecautions:

- Store fuel in containers specifically designed for thispurpose.

- Refuel outdoors only and do not smoke while refuelling. - Add fuel before starting the engine. Never remove the

cap of the fuel tank or add fuel while the engine isrunning or when the engine is hot.

- If fuel is spilled, do not attempt to start the engine butmove the machine away from the area of spillage andavoid creating any source of ignition until fuel vaporshave dissipated.

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Operation

• Do not operate the engine in a confined space wheredangerous carbon monoxide fumes can collect.

• Operate only in daylight or in good artificial light. Stayalert for holes in the terrain and other hidden hazards.

• Before attempting to start the engine, disengage allblade attachment clutches, shift into neutral, and engagethe parking brake. Only start the engine from theoperator’s position. Use seat belts if provided.

• Never operate with the discharge deflector raised,removed, or altered, unless using a grass catcher.

• Remember there is no such thing as a safe slope.Travel on grass slopes requires particular care. To guardagainst overturning:

- do not stop or start suddenly when going up or downhill. - machine speeds should be kept low on slopes and

during tight turns. - stay alert for humps and hollows and other hidden

hazards. - never mow across the face of the slope, unless the

mower is designed for this purpose.

• Watch out for traffic when crossing or near roadways.Slow down and use caution when making turns andcrossing roads and sidewalks. Stop the blade rotationbefore crossing surfaces other than grass. Stop reels ordeck blades if not mowing.

• When using any attachments, never direct discharge ofmaterial toward bystanders or allow anyone near themachine while in operation.

• Never operate the machine with damaged guards,shields, or without safety protective devices in place. Besure all interlocks are attached, adjusted properly, andfunctioning properly.

• Do not change the engine governor settings oroverspeed the engine. Operating the engine atexcessive speed may increase the hazard of personalinjury.

• Disengage drive to attachements when transporting ornot in use.

• Before leaving the operator’s position: - stop on level ground; - disengage the power take-off and blade rotation and lower the attachments; - Change into neutral and set the parking brake; - stop the engine and remove the key.

• Keep hands and feet away from the cutting units.

• Stop the engine and disengage drive to attachment

- before refuelling; - before removing the grass catchers; - before making height adjustment unless adjustment

can be made from the operator’s position. - before clearing blockages; - before checking, cleaning or working on the mower; - after striking a foreign opject or if an abnormal vibration

occurs. Inspect the mower for damage and make repairsbefore restarting and operating the equipment.

• Reduce the throttle setting before stopping engine and, ifthe engine is provided with a shut-off valve, turn the fueloff at the conclusion of mowing.

• Keep hands and feet away from cutting units.

• Look behind and down before backing up to be sure of aclear path.

• Do not operate the mower under the influence of alcoholor drugs.

• Use care when loading or unloading the machine into atrailer or truck.

• Use care when approaching blind corners, shrubs, trees,or other objects that may obscure vision.

Maintenance and Storage

• Keep all nuts, bolts and screws tight to be sure theequipment is in safe working condition. Replace all wornor damaged decals.

• Never store the equipment with fuel in the tank inside abuilding where fumes may reach an open flame or spark.

• Allow the engine to cool before storing in any enclosure.

• To reduct the fire hazard, keep the engine, silencer,battery compartment and fuel storage area free of grass,leaves, or excessive grease.

• Park machine on level ground. Never allow untrainedpersonnel to service machine.

• Check the grass catcher frequently for wear ordeterioration.

• Keep all parts in good working condition and allhardware and hydraulic fittings tightened.

• If the fuel tank has to be drained, do this outdoors.

• Shut off fuel while storing or transporting. Do not storefuel near flames.

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WARNING– California, USA residents are required by law (CA PRC 4442 & CA H & SC 13005) to equip theirengines with spark arresters when operating in flammable vegitation. Arresters must be obtained from yourengine dealer and are not available from National Mower Company.

• Be careful during adjustment of the machine to prevententrapment of the fingers between moving blades andfixed parts of the machine Use care when checkingblades. Wrap the blade(s) or wear gloves, and usecaution when servicing them. Only replace blades.Never straighten or weld them.

• On multi-reel or blade machines, take care as rotatingone blade can cause other blades to rotate.

• Disengage drives, lower the cutting units, set parkingbrake and stop engine. Wait for all movement to stopbefore adjusting, cleaning or repairing.

• Clean grass and debris from cutting units, drives,mufflers, and engine to help prevent fires. Clean up oil orfuel spillage.

• Use jack stands to support components when required.

• Carefully release pressure from components with storedenergy.

• Disconnect battery before making any repairs.Disconnect the negative terminal first and the positivelast. Reconnect positive first and negative last.

• Keep hands and feet away from moving parts. Ifpossible, do not make adjustments with the enginerunning.

• Charge batteries in an open well ventilated area, awayfrom spark and flames. Unplug charger beforeconnecting or disconnecting from battery. Wearprotective clothing and use insulated tools.

Other Riding Mower Safety Instructions

• Always follow all safety instructions to avoid seriousinjury or death. This product is capable of amputatinghands and feet and throwing objects.

• Know how to stop the engine quickly.

• Wearing safety shoes and long pants is advisable andrequired by some local ordinances and insuranceregulations.

• The operator must be skilled and trained in how to driveon hillsides. Failure to use caution on slopes or hills maycause loss of control and cause the vehicle to tip or roll,possible resulting in personal injury or death.

IMPORTANTCALIFORNIA Proposition 65 Warning - Diesel engineexhaust and some of its constituents are known to the Stateof California to cause cancer, birth defects, and otherreproductive harm.

• Check the safety interlock switches daily for properoperation. If a switch should fail, replace the switchbefore operating the machine.

• Using the machine demands attention. To prevent lossof control:

- Do not drive close to sand traps, ditches, creeks, orother hazards.

- Reduce speed when making sharp turns. Avoid suddenstops and starts.

- When near or crossing roads, always yield the right-of-way.

- Reduce foward pedal movement when going downhill tokeep forward speed slow and to maintain control of themachine.

• Do not touch the engine, muffler, hydraulic components,or exhaust pipe while the engine is running or soon afterit has stopped because these areas could be hot enoughto cause burns.

• Make sure all hydraulic line connectors are tight and allhydraulic hoses and lines are in good condition beforeapplying pressure to the system.

• Keep your body and hands away from pin hole leaks ornozzles that eject hydraulic fluid under high pressure.Use paper or cardboard, not your hands, to search forleaks. Hydraulic fluid escaping under pressure can havesufficient force to penetrate the skin and cause seriousinjury.

• Before disconnecting or performing any work on thehydraulic sytem, all pressure in the system must berelieved by stopping the engine and lowering the cuttingunits and attachments to the ground.

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DECAL IDENTIFICATIONNational has provided decals in many locations throughoutthe machine to aid the operator in identifying, controllingand operating the I-Trim safely and correctly. It is importantthat all decals are clean and visable at all times. Replacedecals that are damaged, missing or accidently paintedover.

A

B

D

EC

8

F

G

H J

I

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Item Part No. Description / Location

A 07792 I-Trim Model / Left and Right sides of operator panelsB 07794 Natinal Logo / Top of rear hoodC 07793 National Name / Front of steering columnD 07797 Diesel Fuel / Top of Fuel TankE 07796 Hydraulic Fluid / Top of hydraulic tankF 07778 Warning light identification / Left side panelG 07779 Key Switch and deck rotation switch / Right side panelH 07777 Engine Speed / Left side panelI 07411 Danger / Top of rear and wing mower decksJ 07780 Deck lift / Top of right operator panelK 07795 Warning Decal / Top of steering columnL I-Trim Serial Number / Right side of steering columnM 08092 Instruction Decal- ANSI / steering column

K

NAMES AND LOCATIONS

L M

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INTRODUCTION

This manual has been prepared by National MowerCompany as an aid to users for set up, operation andservicing and ordering replacement parts. Additionalinformation will gladly be furnished by calling or writingthe company.

Please furnish us with the Model number, serial numberand date of purchase when contacting us about yourmachine.

Designations of right, left, front and rear are used in theposition of the operator sitting in the seat.

Metric equivalents are provided wherever possible forusers outside of the United States.

RECEIPT OF SHIPMENT

Carefully inspect your machine and crates for damagethat could have occured during shipment. If damages orshortages are noted, have the transportation company’srepresentative note this on the bill of lading.

Claims for shipping damages must be noted by theconsignee at the point of designation and filed withthe transportation company.

IMPORTANT

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1.1—ENGINE SPECIFICATIONS

TYPE: 3 cylinder turbocharged Diesel

ENGINE MODEL: Briggs & Stratton954 DT

HORSEPOWER: 34 hp

COOLING: Water cooled

1.2—TRANSMISSION

TRACTION DRIVE: Oilgear variableDisplacementHydrostatic pump

WHEEL DRIVE Char Lynn hydraulic motorsMOTORS: with disc-parking brakes

1.3—STEERING

Eaton PowerSteering Control Unit

1.4—MOWER SPECIFICATIONS

FUEL TANK: 10 Gallons (38 liters)

OIL TANK: 12 Gallons (45 liters) Approx.

TIRES: Front: 16 x 6.50 - 8 (28 psi max) Rear: 23 x 10.50 x 12 (20 psi max)

FRAME: Welded steel construction

MOWING SPEED: 0 - 7 MPH (0 - 11.3 km)

CONTROLS: Foot operated traction pedal for forward and reverse, hand operated throttle

conttrol, electric valve for cutting units, and hand operated parking brake.

1—SPECIFICATIONS

BATTERY TYPE: Exide Model 60 PremiumType 78-6012 V side post7 3/16 (18 cm) height6 ¾ (17 cm) width10 1/4 (26 cm) length

1.5—CUTTING UNIT SPECIFICATIONS

CUTTING UNIT: (3) - 26” (.66m) wide decks

BLADES: (2) Right hand 26” (.66 m) wide blades(1) Left hand 26” (.66m) wide blade

DECK MOTORS:(2) CW Hydraulic motors (Right/Rear)(1) CCW Hydraulic motor (Left)

Rotation direction as viewed from top of deck

WIDTH OF CUT: 70” (1.778m)

HEIGHT OF CUT: 1.5” to 4” adjustment (38.1mm to101.62mm)

1.6—LUBRICANTS

ENGINE OIL: Refer to enclosed Engine Manual

HYDRAULIC OIL: ISO 68 hydraulic grade oil.

1.7—OTHER

ROPS: Roll over protective structure meets SAE J 1194 standards

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FIGURE B

2—ASSEMBLY INSTRUCTIONS2.1—TRACTOR ASSEMBLY

Handle banding material with caution. Use heavyleather gloves. Banding is sharp!

The side and rear lift arms are spring-loaded up.Take care when handeling.

1. Remove crating top, front and sides from the tractor crate.Cut banding from Roll-Over Protective Structure (ROPS)Fig A.

2. Cut banding from around tractor frame to crate base.

3. Unbolt rear deck motor from crate base and temporarilystrap to rear lift arm. Leave wood spacer in place on rearlift arm to prevent damage.

3. Release parking brake and push or drive tractor off thecrate. See operating instructions. Do not engage deckmotors until tractor is fully assembled with decks. Re-engage parking brake.

Use jack stands under tractor wheneverelevated off the tires.

Do not engage deck motors untill tractor isfully assembled with decks.

2.2—REAR DECK ASSEMBLY

1. Remove crating top, front and sides from deck crate.Unscrew blades from crate.

2. Remove rear deck from crate and position behindtractor as shown in Figure C. Remove roll pin and washerfrom attachment shaft.

3. Insert a 1/2” rod into lift arm (Fig B) to lower and line-up thelift arm with the deck bushing. Insert shaft and secure withwasher and roll pin. Remove wood spacer.

2.3—LEFT/RIGHT DECK ASSEMBLY1. Remove left and right decks from crate and position near

tractor as shown in Figure D. Remove attachment bolts.

2. Hold down and line-up lift arms with decks. Attach withsupplied bolts and washers. Install lift chains.

FIGURE A

Insert rod Wood Spacer

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2.4—DECK MOTORS AND BLADESThe I-Trim is available with standard or mulch-ing blades. The Rear/Right decks require a RHblade and the left deck uses a LH blade.

MULCHING BLADESRear/Right -P/N 306245 (stamped 306245)Left -P/N 306311 (stamped 306311)

STRAIGHT BLADESRear/Right - P/N 306368 (stamped 4607)Left - P/N 306367 (stamped 6406)

Motor rotation direction is stamped on the flangeof each deck motor. Rotation is clockwise (fromabove) on right and rear decks and counter-clockwise on left deck.

NEVER START TRACTOR WITH DECKS ROTATED

1. Rotate decks vertical as shown in Fig E. Install deckmotors with hoses rotated as shown in Fig C and D usingsupplied botts and nyloc nuts. Note: install ring spacerbetween motor and deck.

2. Install lift chains on rear deck with supplied bolts. Note:The rear deck has a anti-flip chain with quick-releaseconnector link to allow easy removal for HOC adjustments.

2.5—ROPS1. Install roll-over protective structure with supplied bolts and

nuts as shown on Fig E. ROPS can be installed with seat inforward position. Lower ROPS over seat and insert LH sideinto position. Slide ROPS to RH side and spread it slightlyto clear brackets. Install with supplied fasteners.

.

FIGURE C FIGURE D

NOTE

Attachment shaft and roll pin Side deck attachement bolts

Make sure anti-flip chain is installed on rear deckto prevent deck from rotating during operation.

FIGURE EAnti-flip chain

ROPS attachment points

HEX BOLT ½-20 X 1½ GR 5(4)

WASHER ½ SAE (8)

NUT, NYLOCK ½-20 (4)

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1. Remove rear RH wheel to replace battery. Installbattery with side mount terminals facing towardengine. See Fig F.

2. Place battery hold down strap over bolts and securewith flat washers and hex nuts. Do not over-tighten.

3. Connect the red ignition wire to the positive (+)terminal of the battery. Attach the engine ground wireand frame ground wire to the negative (–) terminal ofthe battery.

2.8—BATTERY

Follow the battery manufacture’s instructions onsafety, maintenance and installation procedures.

The I-Trim is shipped with a Exide Model 60 Premium,Type 78-60. Only replace with an equivalent battery.

2.6—ENGINE CRANKCASECrankcase oil has been installed at the factory. However itis recommended that the engine be checked for proper oillevel before starting. Refer to separate engine manualincluded with each I-Trim Mower.

2.7—HYDRAULIC OIL

1. The hydraulic oil has been installed in the oil tank(1, Fig. G) at the factory, however it is recommended thatthe oil level be check before operation.

2. Check oil level by removing pipe cap. The oil level shouldbe at the bottom edge of the screen. If required, add asmall amount of oil to the tank. and replace cap.

Recommended oil is ISO 68 Hydraulic grade oil.

FIGURE F

2.9—GUARD FOR DECK DISCHARGEEach I-Trim Deck is supplied with a safety guard for therear discharge area. These guards are supplied toprevent accidental insertion of a person’s foot and need tobe installed as shown in Fig. G.

Guard

2.10—SCREENBOX FOR RADIATOR

The I-Trim may be supplied with a pivoting rear screenboxas shown in Fig. H. The screenbox needs to be installedonto lower pivot brackets and secured with suppliedcables and snap-latches.

FIGURE H

FIGURE G

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3.2—TRACTION DRIVE TRAINPower from the engine is transmitted by direct drive to thevariable displacement pump. The pump supplies hydraulicfluid to the hydraulic motors.

3.3—MOWER DECK DRIVE

Hydraulic power to the deck motors is actuated by electricswitch mounted on the RH control panel. This switch actuatesa solenoid valve in the deck manifold.

3.4—INTERLOCK SWITCHES

There are three safety switches on your I-Trim. They are asafety precaution, which will allow you to start your mower onlywhen the traction pedal is in neutral, the deck motor controlswitch is in the disengaged position and the operator is seatedon the tractor. If you are able to start your mower with thepedal or switch in any other position, adjustment of theswitches may be required. After engine is started, it willcontinue to run if you leave the seat (as long as the deckswitch is off and the pedal is in neutral).

3—GENERAL INFORMATION

If adjustments are necessary see section 5.0 ofthe is manual for instructions.

3.1—ENGINE

Your machine is powered by a 3-cylinder Briggs and Strattonturbocharged diesel engine which uses diesel fuel. Enginespeed is controlled by means of a throttle lever mounted onthe dash panel.

A separate Engine Manual, prepared by the engine manufac-turer is supplied. Study the manual carefully until you arefamiliar the maintenance, operation, adjustment and repair ofyour equipment. Proper attention to the engine manufacturersdirections will assure maximum service life of the engine andhighest operating efficiency.

NOTE

Never operate the machine if the interlocks arenot operating properly. Accidental startup couldcause severe injury. Refer to Troubleshooting sec-tion (Sec 9).

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Battery Charging Oil Pressure LOW

Water Temperature Water in Fuel Glow Plug ON

4.3—HOUR METERThe hour meter (2,Fig. J) indicates the number of hours thetractor has been operated. It can be used to keep track ofmaintenance intervals and the amount of time required toperform various tasks. The hour meter operates whenever theignition key is in the “on” position.Your I-Trim Mower maybe equipped with a digital hour meter.This meter will display a signal after 5 hours and every 25hours thereafter, recommending that you perform maintannceland lubricate the mower. (see sec.7). The display willautomaticly reset after 2 additional hours of run time.

4—CONTROLS

4.1—IGNITION SWITCHInsert key in switch (1, Fig.J) and turn clockwise to onposition and wait until the glow plug light turns off. After lightturns off, turn key clockwise as far as it will go to start engine,then release. The deck rotation control switch must be in theoff position, the traction control pedal in the neutral positionand a operator must be sitting on the seat before startingengine.

Do not hold key in “ON” position more than 15 second at atime.

Key should be removed when tractor is not in use to preventunauthorized operation.

Refer to section “5.2” for complete starting information.

4.2—INDICATOR LAMPSAfter engine is started, illumination of any indicator lamp willindicate a problem (3, Fig J). Stop engine and correctproblem.

When Key is turned to “ON” the Battery Charging, Glow PlugON, and the Oil Pressure indicator lamps should illuminate.After 5 seconds, the Glow Plug ON light should turn off (FigK).

FIGURE J

1

2

4

3

9

7

FIGURE K

5 6

8

10

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4.4—THROTTLE LEVERPush throttle lever (4, Fig. J) forward to increase enginespeed, pull back to decrease the engine speed.

Position throttle at full throttle or slightly less for optimumpower and deck speed during mowing.

4.5—TRACTION PEDALThe traction pedal (5, Fig. J) operates the forward and thereverse direction and speed of the tractor.

Moving forward: push the forward or toe of the pedal downwith the ball of your foot, to increase the forward speed.

Moving backward: push the heel of the pedal down with theheel of your foot, to increase the reverse speed.

When the traction pedal is released the machine will slowdown and stop. The traction pedal must be in neutral positionbefore mower will start.

4.6—SPEED CONTROL

The speed control (6, Fig. J) is meant to ease operatorfatigue by holding the forward speed to a constant thatis best suited for the present mowing conditions. Thestop also prevents overloading of the pintle shaft.

Adjust the hex head bolt up or down and lock it with thelock nut to limit the pedal travel. Make sure the pintleshaft on the pump is not bottomed-out by watching thelinkage deflection when pedel is all the way down.

4.7—DECK LIFT

The Deck Lift valve (7, Fig. J), will lift both wing decksand rear deck by pulling lever to rear. Pushing lever tofront will lower all deck to the ground. Always lowerdecks for mowing and storage.

Do not stand on mowers when in lifted position.

4.8—PARKING BRAKE

A convenient parking brake (8, Fig. J) is located just tothe left side of the operators seat.

Pulling back and over center will engage the parkingbrake and moving it forward, as shown, will release it.See section 6.1 for adjustments.

Always make sure brake is released before mov-ing forward and ensure that the brake is engagedwhen leaving the mower. Never try to stop theforward motion of the unit with the parking brake.

4.9—DECK DRIVE CONTROL

By toggling the deck drive control switch ON (9, Fig.J), an electric solenoid valve is activated whichengages power to the deck motors.

Pushing the switch to the OFF position disengages thevalve. This contrtol must be in the OFF position beforemower will start.

4.10—SEAT POSITION LEVER

The position of the seat is adjusted forward orbackward by actuating the seat lever (10, Fig. J).

Releasing the lever will lock the seat at its presentposition.

IMPORTANT

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5—OPERATION

5.1—CHECK LIST

1. Fill the fuel tank with good quality, clean, diesel with aminimum of 40 octane. Fresh fuel prevents gum fromforming in the fuel system. Fill tank to 1 inch (25 mm)below filler neck. Do not overfill.

2. Check oil in the engine crankcase. It should be filled tothe full mark on the dipstick. Refer to Section 1.6 in thismanual for recommend oil viscosity.

3. Check all lubrication points outlined in the “Section 7.14Lubrication” section of this manual. Check linkage fortraction pedal to the pump for wear or damage.

4. Check tires for proper inflation. Refer to section 1.4 ofthis manual.

5. Check oil level in hydraulic reservoir. Oil level should belevel with the bottom of the screen when looking into thefill neck and when unit is sitting on a level surface.

6. Check decks for desired cutting height. To provide asatisfactory cut, it is essential for all decks be accuratelyadjusted to exactly the same height. See 6.9 in theAdjustments Section.

OPERATING SUGGESTIONS

Under no circumstances should the engine bestarted with the operator or bystander standingnext to tractor or cutting units.

1. When starting the engine, the operator must be seatedon the seat, deck control switch must be OFF andtraction pedal must be in neutral (the center position).

2. The operator should practice mowing in an open cleararea, to become thoroughly familiar with the operation ofthe tractor.

3. Never operate the mowers when they are in the upposition because of the dangers of flying objects andexposed blades.

4. Plan your cutting pattern to avoid any unnecessary stopsor sharp, frequent turns. Study the area to determine thebest mowing procedure. Consider the height of the grassand the type of terrain (level, hilly, or rough). Eachcondition will require certain adjustments or precautions.

5. Before leaving the mower, always lower deck mowersso that when exiting the mower and stepping on the non-skid pads of the wing mowers, it will not put excessivestrain on the lift mechanism.

6. Operate at speeds which allow you to have completecontrol of the tractor and allow you to stop the tractor ormaneuver safely in case of an emergency. It isrecommended that you adjust the Speed Control (6, Fig.J), to maintain a constant pedal postion/speed andreduce the operator fatigue.

7. To obtain maximum mower life, the operator must usediscretion when mowing near gravel areas (roadway,parking areas, cart paths etc.) By operating too close tooverlapping gravel areas, stones maybe picked up bythe mower and ejected under the deck causing wear tothe blades and damage from flying objects.

5.2— STARTING THE ENGINE1. Sit in operators seat.

2. Place deck control switch in the “OFF” position (9, FigJ).

3. Place the traction pedal in “Neutral” position (5, Fig J).

4. Engage parking brake (8, Fig J).

5. Insert ignition key, turn clockwise to “run” position andwait until the glow plug ON light turns off. Turn keyclockwise to “start” and release key when engine starts.Do not hold key in “start” position for more than 15seconds or damage to the starter may result. If enginedoes not start within this time, release the key and waitfor a few minutes before trying again.

5.3—DRIVING THE TRACTOR

1. Position throttle at full throttle or slightly less for optimumpower and deck speed.

2. Release parking brake (8, Fig. J).

3. Moving forward: Push the toe of the traction pedal forward with the ball of your foot, to increase the forward speed .

4. Moving backward: Push the heel of the traction pedal inwith the heel of your foot, to increase the reverse speed.

5. To return traction pedal to neutral, rock pedal with foot untilpedal stops. The pedal will stay in neutral when youremove your foot.

To avoid possible loss of control and/or se-rious bodily injury, avoid abrupt chages inthe tration pedal position. Reduce speed onslopes, rough terrain, and in sharp turns toprevent tipping or loss of control.

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5.4—MOWING OPERATION

1. Check the turf area for debris that would causedamage to the decks. Never operate the decks when theyare in the UP position because of the danagers of flyingobjects and exposed blades.

2. When cutting large areas, the most satisfactory method isto first cut the outer area and then mow clockwise towardthe center. The next time you cut, it is advised that youmow in the opposite direction to prevent grass matting.

3. Cutting speeds are governed by conditions of turf, type ofterrain and opstacles to be encountered. Operate tractor atslow speeds when turning.

5.5—MOWING1. Stop tractor, by releasing the traction pedal, then slowly

lower the mower units (5, Fig.J) and (7, Fig. J).

Dropping mower decks abruptly could damagethem. Always check for bystanders before low-ering.

2. Engage deck control switch (9, Fig. J) to the ON position.

3. Depress traction pedal to the desired speed (sections4.6 and 4.7). Deck speed is constant and ground speed isvariable with the traction pedal. Do not try to regulateground speed with engine throttle (section 4.5).

5.6—HILLSIDE OPERATION

The I-Trim has been designed for good traction and stabilityunder normal mowing conditions. However, caution must still beused during slope operation, especially when the grass is wet.Wet grass limits traction and steering control.

In order to minimize the possibility of tipping, the least danger-ous method of operating on hills and terraces is to travelhorizontally to the hill. It is also advisable to avoid any unneces-sary turns while operating on hills. Use extreme caution andtravel at reduce speeds.

1. When operating on hillsides or slopes, maintain fullengine speed, but let up on the traction pedal as powerrequirements increase. This will maintain theperformance necessary.

2. It is best to mow along the side of the hill, starting at thebottom and working upwards. This allows the machine tonegotiate the slope without mowing in a downhilldirection.

3. It is essential for the correct tire pressure to beestablished for maximum traction and hillside holding.

5.7—PUSHING OR TOWINGINSTRUCTIONS

The I-Trim should not be pushed or towed with the engine notrunning. If needed, the I-Trim can be pushed or towed at slowspeeds for very short distances without starting the engine.Do not exceed 2 mph while pushing or towing.

A screw-adjustable valve is located on the underside of thepump for towing. Note: Do not exceed 2 mph while pushing ortowing. Loosen the lock nut and turn the screw CCW torelease pressure. After towing, tighten the screw by turningCW and lock into place with the locknut.

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6.2—PARKING BRAKE ADJUSTMENTThe parking brake should be set so that it holds the tractorsecurely. The parking brake must be released before thetraction pedal is engaged.

1. Adjust the brake by loosening set screw in the brake knoband turning knob clockwise to tighten, or counterclockwiseto loosen, then retighten set screw.

2. After making any adjustment check brake on flat ground, sothat the tractor will not move with brake engaged.

3. Further testing by putting tractor on a hill, leaving the engineon and engaging park brake. and then test with the engineoff.

6—ADJUSTMENTS

Read each instruction completely and, make sure you under-stand it before making any adjustments. Follow all the safetyprecautions.

To avoid possible serious injury, before makingany adjustments or performing maintenance, en-gage parking brake, place all tractor controls inneutral, lower decks to the ground, turn ignitionswitch “off” and remove key.

6.1--TRACTION PEDAL ADJUSTMENTSThe traction pedal (1, Fig.M) is equipped with a safety switch(2, Fig. M) and a neutral centering device. The switch preventsthe engine from starting when the pedal is positioned inreverse or forward. The centering device locates neutralpositioning of the pump.

1. Prior to adjusting for creep, elevate the wheels off theground and support the vehicle with jack stands. Anyadjustments should be done while the hydraulic oil iswarm.

2. To adjust the creep of the drive wheels, loosen thefastener attaching the clevis to the control arm. Rotate theclevis and re-atach to achieve neutral.

3. Once the traction pedal has been adjusted, the safetyswitch (2, Fig. M) should not have to be re-adjusted.Check neutral switch operation before use. If needed,adjust the switch so that the engine cannot be startedunless the pedal is in the neutral position.

FIGURE M

5.8—AFTER OPERATION

1. Clean the entire mower after use. Remove loose grassclippings and caked grass to prevent clogging the ventedareas, lubrication points, and corroding parts.

2. The engine is water cooled. Do not permit dirt or grassclippings to accumulate on the air intake screen, engineor radiator/oil cooler to prevent serious heat damage tothe engine,or hydraulic pump.

3. If fan blades become damaged, replace the fan.

5.9—CLEANING RADIATOR AND OILCOOLER

1. If grass clippings become trapped in radiator and oilcooler, use compressed air from fan side to blow them out.The screenbox can tilted back for cleaning by looseningquick-latches (Sec. 2.10 or Fig. H below ).

2. If grass clippings become trapped between radiator andoil cooler, the oil cooler can be tilted back for cleaning(Fig M). Be careful not to damage the fins on theradiator and oil cooler during cleaning.

FIGURE L

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6.4—REAR MOWER LIFT

The rear mower lift height has been preset at the factory andnormally will not need to be adjusted. The I-Trim may befitted with a needle valve on the rear lift cylinder.Turning the needle valve CW will slow the lift andlowering speed of the rear deck. Always lock theadjusment knob down when done adjusting.

6.3—GROUND SPEED CONTROL

6.5—HEIGHT OF CUT ADJUSTMENT1. To set the height of cut, lift the deck to a vertical position (Fig.O). Remove linch pins and assemble spacers (1 Fig. 0) to setheight of cut desired. Loosen side attachmement bolts of rearroller if needed to slide rear roller out (2 Fig. O). Min HOC is 1.5”with no spacers under the roller attachment shaft. Max HOC is4”

Rollers must be adjusted to the same height sothat there will be uniform cutting the entire widthof the mower.

To avoid possible serious bodily injury, beforeperforming and adjustments, maintenance, or lu-brication, place all controls in “neutral”, lowerthe mowers to the ground, engage parking brake,turn ignition switch off and remove key.

Use heavy gloves and be careful. Blades arevery sharp.

2. Make sure adjustment nuts are tight before mowing.

IMPORTANT

6.6—BLADE REPLACEMENT PROCE-DURE

Replace blades with factory blades only. Standard dischargeblades and mulching blades are available. Note: The Rearand Right decks use the same blade (RH). The Left deck usesa LH blade.

Be extremely careful not to let tools, your fingersor clothing get caught in the blades. Use ap-proved safety glasses to protect eyes from flyingparticles and abrasives.

NEVER START ENGINE WITH DECKS ROTATEDUP AND NOT IN A HORIZONTAL POSITION.

1. Loosen 1/2-13 Grade 8 bolts and remove blades. Installnew blades as shown in Fig. O. Make sure cutting edge isclosest to ground and correct blade is on each deck.

2. Install bolts and torque to 98 ft-lbs. If needed, replace

FIGURE O

REAR, RIGHT DECKS -SHARP EDGE UP

LEFT DECK- SHARP EDGE UP 2 1

The I-Trim does not have an adjustable ground speed control.See Section 4.7 for pedal adjustment.

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3. When the battery is being installed or removed makesure that the positive and negative terminals do notcome in contact with metal tractor parts at the same timeor severe damage may result.

4. Battery connections must be kept clean and tight at alltimes. Loose cables will cause eventual battery failure.Keep terminal covers in place.

5. Use soap and water to clean the battery as required.Care must be taken to prevent soap and water fromgetting inside battery.

6. Clean the terminal contact surfaces with a batteryterminal brush or steel wool.

7. Tighten cables securely to battery terminals.

8. Apply a light coat of petroleum jelly or chassis lubricantto terminals and cable ends after assembly to preventcorrosion.

7—MAINTENANCE

To avoid possible serious bodily injury, beforeperforming and adjustments, maintenance, or lu-brication, place all controls in “neutral”, lower themowers to the ground engage parking brake, turnignition switch off and remove key.

7.1—GENERAL MAINTENANCE

The long trouble free life of your machine depends on themaintenance it receives. Set-up a maintenance program foryour I-Trim to cover the following points:

Keep tractor and decks clean.Keep all moving parts properly lubricated (sec. 7.14).

Keep all parts properly adjusted.

Inspect for loose, worn or damaged parts.

Keep shields in place at all times.

Keep tires properly inflated.

If your inspection reveals worn or damaged parts replacethese parts before operating machine or before actualbreakdown occurs.

To avoid injury from hot, high-pressure oil, neverdisconnect hydraulic hoses with attachments inup position. Never rub hands across tubes, hosesor fittings to check for leaks. Hydraulic fluid es-caping under pressure can have sufficient forceto penetrate the skin.

7.2—ASSEMBLY AND DISASSEMBLYUse the illustrations in the parts catalog as reference fordisassembly and assembly of components. Always maintainrelative position of parts when disassembling. Clean andlubricate individual parts and components as required.

7.3—BATTERY1. Make certain the ignition switch is in the “off” position and

the keys have been removed.

2. Refer to section 1.4 in this manual for batteryspecifications.

Always wear protective glasses or goggles andprotective clothing when working with batteries.Always connect the “ground” (black) cable lastand remove it first whenever performing anymaintenance.Batteries contain sulfuric acid and generate ex-plosive mixtures of hydrogen and oxygen gases.Keep any device, which may cause sparks orflames away from the battery to prevent explo-sions.Read and follow the battery manufacture’s in-structions on safety, maintenance and installa-tion procedures.

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7.4—CHARGING A BATTERY

To avoid possible injury, stand away frombattery when charger is turned on. A damagedbattery or a battery with an internal short couldexplode

Charge battery ONLY in a well verted location, away fromsparks or open flame.

1. Remove the battery from the tractor before charging.

2. Be sure charger is “off “.

3. Connect charger leads to battery. Connect the positive(+) connector from the charger to the positive batteryterminal. Connect the negative. (–) connector of thecharger to the negative battery terminal.

4. Charge the battery using one of the methods shown below.Follow the manufacturer’s instructions on the charger.

5. If when charging the battery, if violent gassing or spewingof electrolyte occurs, or the battery case feel hot(125*F - 52C), reduce or temporarily halt charging to avoiddamaging battery.

6. Always turn charger to “off” before removing a chargerlead from the battery.

7.5—BELTSThere are no belts on the I-Trim.

7.6—ENGINE FUEL FILTERBefore servicing the fuel filter, thoroughly clean outside of filterhousing and fuel hoses, dirt must not be allowed to enter intofuel or fuel system. Refer to manufacturer’s Engine Manual forinstructions.

7.7—ENGINERefer to manufacturer’s Engine Manual for maintenanceschedule recommendations. Change oil and oil filter after thefirst 50 hours of operation.

7.9—HYDRAULIC HOSES

To avoid serious bodily injury, always lower mow-ers to the ground, place all controls in neutraland shut off engine before inspecting hydrauliclines or hoses. Never run hands across tubes,hoses or fittings to check for leaks.

Hydraulic hose and tube lines should be inspected every weekto check for cuts, loose connections, kinks and wear.

Be sure tubes and hoses do not come in contact withotherframe parts which could cause abrasive wear. Always replaceworn hoses or tubes before operating machine.

1. Assemble nut, sleeves and tube to fitting body withminimum torque (finger tight) until flare contactsseat on fitting body.

2. For tightening reference, mark a line lengthwise on boththe nut and adapter fitting with a marker.

3. Using a wrench, rotate the nut to tighten. Turn the nut theamount shown in the chart below. The line will show whichfitting have been tightened and how much.

4. On hoses with “o-ring” fittings, make sure o-rings areclean and hose fittings are properly seated by hand beforewrench tightening.

5. Hold the fixed portion of the hose coupling with onewrench; use a second wrench to tighten or loosen the hosenut. This will prevent damage to the fitting seal. Whentightening a hose, do not allow it to twist; hold it in anormal, straight position.

Tube O.D. or hose, Rotate Number. of flats3/8” 21/2” 25/8” 1-1/2 to 21” 3/4 to 1

7.8—ELECTRICAL SYSTEM

Make certain all terminals and connections are kept clean andproperly secured.

1. Check switches regularly to be sure they are kept cleanand operating correctly

2. Keep wire harness and all individual wires away frommoving parts, hot parts, or sharp edges. this will preventabrasive wear or potential short circuits.

3. Exercise extreme care when working with electricalsystem.

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1. Remove the old filter

2. Install new filter, filling filter with oil before re-installing.Apply oil to the O-ring of the filter prior to installation. Handtighten only.

3. Run engine at idle speed with hydrostatic pump in neutralfor five minutes.

4. Check hydraulic oil level and add oil if necessary. Frequent checks of oil level in the hydraulic tank.

Should the pump run short of oil, immediate and permanent damage will result

7.13—DECK BLADE REPLACEMENTWhen the deck blades become damaged or too worn to keepsharp, they must be replaced. Follow the procedure below.

1. See Section 6.13 for instructions to replace deck blades.

7.10—HYDRAULIC OIL

1. The oil level should be checked if any oil leaks aredicovered. Oil level should be brought to decal mark onthe side of the oil tank.

2. Park the tractor on a level surface.

3. Oil should be at 60° F to 90° F (16 – 32 °C), whenchecking level. Do not check level when oil is hot.

4. Drain and replace the hydraulic oil every 200 hours.Use ISO 68 Hydraulic grade oil. Replace both hydraulicfilters every 200 hours.

The oil should be changed after a major component failure,or if you notice any of the following.

• Present of water - (noted by a cloudy or milky appearance) • Present of air - (noted by foaming) • Excessive heat - (noted by rancid odor)

5. To drain hydraulic oil tank, remove the drain plug in theback of the hydraulic tank.

6. Reinstall drain plug and fill hydraulic tank until the oil isevel with the bottom of the screen in the fill tube. Use onlyfiltered hydraulic oil. The total hydraulic system oil capacityis approx. 10-12 gallons.

7. Jack up rear tires so they spin freely.

8. Start engine; operate the traction pedal and turn steeringfrom right to left to free the system of air. Recheck oil level.

7.11—HYDRAULIC OIL FILTERSTo prevent damage to the hydraulic system, the hydraulic oilfilters (located under right fender and under steering columnshroud) should be changed after the first 25 hours of operationand every 200 hours thereater.

7.12—JUMPER CABLES

The battery on the I-Trim is located at the rear of the tractor,See.

1. Stop the engine on the vehicle with the good battery.

2. Connect one jumper cable to the positive terminal on thegood battery. Connect the other end of the jumper cable toeither the positive terminal on the dead battery or thebattery side of the solenoid located on the right front of theengine.

3. Connect one jumper cable to negative terminal on deadbattery. Connect the other end to ground (frame) of vehiclewith the good battery.

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THIS PAGE IS BLANK

26

1 Daily Dipstick / left side of Engine Check level 12 Daily Radiator Reservoir Bottle Check level 13 Daily Hydraulic Tank Check level 14 Daily Fuel Tank Check level 15 Daily* Pre-Air Filter Inspect/Clean 1

6 Daily* Screenbox, Radiator Fins/ Rear Inspect/Clean 17 Weekly Height Adjustment Shaft Housings Grease, Lithium 128 Weekly Tires Check Pressure 49 Weekly Hardened Bushines/Deck Lift Arms Light Machine Oil 109100/600** Air Filter Element / Left side of Engine Inspect, Replace as Nec. 1

10 100 Fan Belt / Rear of Engine Inspect, Adjust 111 150** Drain Plug / Underneath Engine Change Oil 112 Monthly Front Axel - Rod Ends, King Pin.pivot Grease, Lithium 613 Monthly Radiator / Rear of Engine Check coolant level cold 114 Monthly Rear Lift Pivot / Above Rear Deck Grease, Lithium 215 Monthly Lift Shaft Bushings / Under Seat Grease, Lithium 116 200 Battery / Right Side of Engine Check Electrolyte 117 300** Canistor / Left Side of Engine Change Oil Filter 118 600 Rocker Arms / Top of Engine Check Valve Clearance 119 800 Fuel Filter / Left side of Engine Replace 120 Yearly Pedal Shaft Bushings / Behind Bumper Grease, Lithium 221 200*** Hydraulic filters (2)/RH shroud,steering Replace 222 200* Hydraulic Tank / To Left side of Engine Drain, Flush, Refill 123 Yearly Radiator, Engine Block Change Coolant 1

7.14—LUBRICATION

Fre- No.Item quency Location Type of of

(Hrs.) Lubrication Places

Figure U shows the top view of the I-Trimwith guards removed. Lubricate yourtractor at the recommended locations andintervals using proper lubricants so thatmaximum service and long life of themachine may be obtained.Your I-Trim Mower maybe equiped with adigital hour meter. This meter will display asignal after 5 hours and every 25 hoursthereafter, recommending that you changeengine oil and lubricate the mower.

Before doing any work onyour machine, stop theengine, remove the ignitionkey and set parking brake.

GREASE - Lithium base or equivalent

OIL - Light machine oil

SYMBOLS

FIGURE U

* More often as necessary** Perform first maintenance operation after 50 hours. All subsequent maintenanceperformed at this interval. Service more often when operating under heavy load or in hightermperature.*** Perform first change of hydraulic filters at 25 hours. All subsequent replacements at200 hours

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18

19

21

7 147

7

13

171

2

7

7

3

9

5

15

7

7

7

7

4

12

12 12 20 12

12

22

12

7

5

11

10

6

8

8

88

16

23

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8—STORAGE

8.1—GENERAL INSTRUCTIONSWhen you do not plan to use your vehicle for some time, itshould be stored in a dry and protected place. Unnecessaryexposure to the elements may deteriorate its appearance andshorten the usual service life.

8.2—ENGINE1. Drain the fuel from the fuel tank.

2. While the engine is still warm, change oil. Refer toEngine Manual for manufacture’s instructions.

3 Remove glow plugs and pour about 3cc of engine oilinto each cylinder. Replace glow plugs and crank slowlyto distributre oil.

4. Clean exterior of engine. Paint the exposed metal orcoat it with a light coating of rust preventative oil.

8.3—BATTERY1. Remove battery and clean it. Refer to manufacturer’s

manual for specific instructions.

2. Maintenance free batteries should be stored in anupright position in a cool dry place. Storage above 80° Fgreatly increases self-discharge. If wet batteries aredischarged, the electrolyte will freeze when stored below20° f (-7 °C)

The battery should be checked every 60 to 90days while in storage, and should be rechargedif necessary.

8.4—TRACTORWash, clean and completely lubricate the tractor. Paint anyexposed metal.

8.5—TIRES1. Before storing the vehicle, clean the tires thoroughly.

2. Jack up the vehicle so that the load is off the tires. If it isnot jacked up, check the tires at regular intervals and re-inflate as necessary to keep them at the recommendedmaximum pressure. (Indicated on tires side wall)

3. Store the vehicle so that the tires are protected fromsunlight.

8.6—STARTING THE ENGINE AFTERSTORAGE

If mower is cold, move the mower to a heated location andallow it to come to room temperature( 70° F - 22 °C) beforestarting. This will prevent premature wear of hydraulic systemcomponents.

Follow the towing procedure (in Sec. 5.8).

1. Check and recharge the battery according to recommen-dations given in Section 7.4 page 22.

2. Reinstall the battery

3. Check oil level in crankcase and hydraulic oil tank.

4. Fill the fuel tank with fresh diesel fuel. Prime fuel filter bypushing down and releasing until firm.

5. Before driving the vehicle, check to make certain that thetires are properly inflated to the proper pressure.

6. Either move the vehicle outdoors or keep doors and orwindows wide open to provide sufficient ventilation beforestarting engine this will prevent danger from carbonmonoxide gas in the exhaust.

7. Start the engine but do not operate at high speedimmediately after starting. Allow time for it to becomeproperly warmed and lubricated.

IMPORTANT

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9—TROUBLE SHOOTING

ENGINE WILL NOT START

The operator must be seated.

Check position of controll switch (on dash).Switch must be in the OFF position.

Check to see that the traction pedal is in neutral.(neutral is in the center position).

Check all safety switches for conductivity. SeeElectrical System diagram, Fig. 11, Page 48.Replace switches if necessary.

Check fuel in tank

Check battery. Check charge level, charge or replace asneeded. Clean battery terminals if necessary.

Check electrical wiring and safety switch operation.

TRACTOR WILL NOT MOVE

Check that parking brake is not engaged.

Check the linkage from the traction pedal to the pump controlmechanism to ensure complete attachment of all linkages.

DECKS WILL NOT TURN

Check for debris jammed between the blade anddeck platform.

To avoid possible serious injury, before mak-ing any adjustments or performing mainte-nance, place all controls in neutral, fully lowercutting units to the ground, turn ignitionswitch to “OFF”, remove key and set parkingbrake.

1. MAKE WORK AREA SAFE:

Make sure personnel in the area are out ofharms way if the engine starts or the decksrun unexpectedly. Engage the vehicleparking brake.

2. READ MANUAL:Become familiar with wiring diagram andthe locations of the various electricalcomponents.

3. DISCONNECT HOUR METER BEFOREREMOVING SIDE COVER:It may be necessary to remove both sidecovers, rear cover and hood to give accessto battery, ignition switch, circuit breaker,blade run switch, circuit board and otherelectrical components. It may also benecessary to remove the front bumpercover to gain access to the neutral pedalswitches.

4. CHECK BATTERY:Make sure battery is in good condition andfully charged.

5. CHECK BATTERY CABLES:Check battery cables for tightness at bothbattery and engine.

6. CHECK GROUND STRAP:Check ground strap for tightness andcondition.

7. DECK RUN SWITCH OFF:Put deck run switch in the off position.

8. RESET CIRCUIT BREAKER:The circuit breaker has a reset button.Reset circ uit breaker after checking for ashort or grounded wire downstream of thecircuit breaker.

9.1—ADVANCED TROUBLE SHOOT-ING PROCEDURES

VEHICLE PREPARATION FOR DIAGNOSIS ANDCOMPONENT IDENTIFICATION

30

9. SAFETY INTERLOCK BOARD (SIB):The ITrim is equipped with an integratedcircuit board designated as the SafetyInterlock Board (SIB). The SIB controls thevehicle starter cranking, engine run anddeck run circuits and the indicator lights.

The starter motor won’t crank unless thefollowing conditions are met:

a. Operator must be sitting in theseat.

b. Foot Pedal must be in neutralposition.

c. Deck Switch must be off.

If the operator gets up off the seat theengine will continue to run if the followingconditions are met:

a. The foot pedal is in neutralposition.

The deck switch is off.

PROBLEM: STARTER WON’T CRANK - withpedal in neutral position, operator in seat anddeck run switch in off position.

1. Using a test light, check for power to the startrelay, terminal 87 when the ignition switch isturned to the start position.

If test light doesn’t come on at start relay, terminal87:1. With a test light, work back from the start

relay, checking for power at the ignitionswitch, circuit breaker and positive batterypost on the starter solenoid.

2. Replace defective components or repairwiring.

If test light comes on at start relay, terminal 87:1. Remove contact terminals, terminals 87 and

30, from start relay.2. Connect the contact terminals together with

a temporary jumper made with spadeterminals and 10 GA wire.

3. Turn the ignition switch to the startposition.

If engine doesn’t crank:1. With a test light, check for power at plastic

connector on the starter solenoid while anassistant turns the key.

If test light doesn’t come on:The problem is in the wiring orterminals between the start relayand the starter solenoid.

If test light comes on:The problem is in the startersolenoid or starter.

If engine cranks:1. Remove jumper and reinstall terminals on start

relay.2. Turn the ignition switch to the on position.3. Check the indicator lights on the SIB with an

assistant sitting on the seat of the vehicle.a. All four indicator lights should be on.

If no lights come on:1. Check for a blown fuse on the SIB and

replace if faulty.

2. Check for power to the SIB by checkingfuse receptacle with a test light. The leftslot of the fuse receptacle should havepower.

If there is no power to the left slot of the fusereceptacle:

1. Check for power at terminal J2-2 on the SIBwith a test light. (Insert test light probe intobackside of connector.)

If there is power at terminal J2-2 on the SIB butnot at the left slot of the fuse receptacle, theSIB is faulty and should be replaced.

If there isn’t power at terminal J2-2 on the SIB,the problem is in the wiring or the terminalsbetween the ignition switch and the SIB.

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If no lights come on and fuse is goodand there is power to the board:

1. Make sure SIB is grounded by checking theresistance between the capacitor ground on theSIB and the vehicle frame. Resistance shouldbe 0.

If SIB is not grounded:1. Check the resistance between terminal J1-7 on

the SIB and the vehicle frame. Resistanceshould be 0.

If number 1 above is not 0 and number 2 above is 0:The SIB is faulty and should be replaced.If number 1 above is 0 and number 2 above is not 0:

The problem is in the wiring or terminals betweenJ1-7 and the frame ground which is located onthe ROPs support behind the SIB bracket.

If SIB is grounded and lights still don’t come on:1. Temporarily put jumper between terminals

J3-1 and J3-2 on SIB. (The jumper can bea thin piece of U-shaped wire inserted intothe backside of the connector.)

a. The seat relay indicator light, (the first lighton the left side of the SIB,) should comeon.

If the seat relay indicator light doesn’t come on:The board is faulty and should be replaced.

If the seat relay indicator light comes on:(With the jumper but not with a person in the

seat) The problem is in the seat or thewiring between the SIB and seat.

If the seat relay indicator light comes on butnone of the others do with the SIBgrounded:

The SIB is faulty and should be replaced.

If the seat relay indicator light on the SIB andthe run relay indicator light on the SIB are onbut the pedal relay indicator light and/or theblade relay indicator light are not on,troubleshoot the pedal and blade relay circuitsindividually as follows:

If the pedal relay indicator light is off with seatand run relay indicator lights on:

Temporarily put jumper between terminals J3-3and J3-4 on the SIB. (The jumper can be athin piece of U-shaped wire inserted into thebackside of the connector.)

The pedal relay indicator light, (the second lightfrom the left side of the SIB,) should come on.

If the pedal relay indicator light doesn’t comeon with the jumper:

The board is faulty and should be replaced.

If the pedal relay indicator light comes on withthe jumper:

The problem is in the pedal switches at thefront of the vehicle or in the wiring from the SIBto the pedal switches. (The arms that thepedal switches are mounted on, must fullycontact the foot plate of the vehicle to actuatethe switches. Both switches must be actuatedto complete the circuit to the SIB.)

If the blade relay indicator light is off with seatand run relay indicator lights on.

Temporarily put jumper between terminals J2-2and J2-3 on SIB. (The jumper can be a thinpiece of U-shaped wire inserted into thebackside of the connector.)

The blade relay indicator light, (the third lightfrom the left side of the SIB,) should come on.

If the blade relay indicator light doesn’t comeon with the jumper:The board is faulty and should be replaced.

If the blade relay indicator light comes on withthe jumper:The problem is in the deck run switch thewiring or terminals to the deck run switchterminal 5 or the wiring or terminals from theblade switch to the SIB.

The starter should crank with all the aboveoperating correctly.

32

Problem: STARTER CRANKS BUT ENGINEWON’T START

Check the electrical system after checking for fuelin the tank and after priming the fuel system.

Using a test light with the ignition switch in the onposition, check for power at the fuel pumpconnector on the engine.

If test light comes on:Make sure fuel pump is properlygrounded by using the fuel pump for thetest light ground.

If the fuel pump is properly groundedthe problem is in the fuel pump.

If test light doesn’t come on:Using a test light check for power atterminal J4-2 on the SIB.

If test light comes on at terminal J4-2on the SIB:

The problem is in the wiring orterminals between the SIB and thefuel solenoid.

If test light doesn’t come on at terminalJ4-2 on the SIB:The board is faulty and should be replaced.

Problem: DECK MOTORS WON’T RUN WITHENGINE RUNNING

1. Temporarily disconnect connector at bladerun hydraulic valve.

2. Start engine, put deck run switch to onposition.

3. Check terminals of wiring connector withtest light.

If light comes on:Test the resistance of the deck runhydraulic valve coil (at coil connector).The resistance should be approximately4c ohms. Current flow through the coiltherefore should be approximately 3amps. at 14 volts.

If the coil resistance is correct theproblem is not in the electrical system.

If light doesn’t come on:1. Check for power at

terminal J2-6 on the SIB.2. Check for power at

terminal 2 on the DeckRun Switch.

3. Check for power atterminal 1 on the DeckRun Switch.

If the light doesn’t come on for number 1above:

The board is faulty and should bereplaced.

If the light comes on for number 1 abovebut not 2:

The problem is in the wiring orterminals between the SIB and thedeck run switch.

If the light comes on for numbers 1 and 2above but not 3:

The deck run switch is faulty andshould be replaced.

If the light comes on for numbers 1,2 and 3above:

The problem is in the wiring orterminals between the deck run switch and theblade run valve.

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33

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FIGURE 6B - FRONT WHEEL ASSY

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FIGURE 7—ENGINE AND RADIATOR ASSEMBLY

FIGURE 7

NOTE: CONTACT BRIGGS & STRATTON FOR P/NS STARTING WITH B&S

I-TRIM®

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ITEM NO. QTY. PART NO. DESCRIPTION

1 1 306171 WELDMENT - DECK PLATFORM RR

2 2 306064 WELDMENT - FRONT ROLLER AXEL

3 1 306074 WELDMENT - BLADE HOLDER

4 2 306067 WELDMENT - REAR ROLLER ADJUSTER

5 2 306069 WELDMENT - HOUSING, REAR ROLLER ADJUSTER

6 1 306376 WELDMENT - FRONT ROLLER FRAME

7 1 306379 WELDMENT - FRONT ROLLER FRAME, RH

8 2 306443 ASSEMBLY - FIXED ROLLER

9 1 306442 ASSEMBLY - REAR ROLLER

10 2 306373 FACE PLATE

11 4 306374 SPACER BLOCK

12 1 306028 SPACER PLATE

13 1 306476 DISCHARGE SHIELD RH

14 1 306368 BLADE - STANDARD, RH

15 1 306245 MULCHING BLADE RH

16 2 306402 WASHER SPACER 1.0X1.88

17 2 306403 WASHER SPACER .5X1.88

18 8 306404 WASHER SPACER .25X1.88

19 2 306318 DECK SPACER 1.0X1.25

20 2 306319 DECK SP