pfaff 4870 instruction

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I PFAFF hobbylock 4870 Instruction manual

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Page 1: PFAFF 4870 Instruction

I

PFAFF

hobbylock4870

Instructionm

anual

Page 2: PFAFF 4870 Instruction

Foreasier

un

derstan

din

gof

this

instru

ction

man

ual

please

foldth

isor

the

lastpag

eo

ut

when

reading.

Safetyrules

Forth

eU

nitedK

ingdomonly

The

leads

mu

stunder

nocircu

mstan

cesbe

con

nected

toth

esafety

-leadterm

inal

Inor

toa

plugw

ithth

reepin

s.

The

wires

inth

em

ainslead

arecoloured

accordingto

the

following

code:

Blue:

Neutral

Brow

n:Live

As

the

coloursof

the

wires

inth

em

ainslead

ofthis

appliancem

aynot

corresp

ond

toth

ecolour

codingof

the

termin

alsin

yourplug.

pro

ceedas

follows:

The

wire

which

iscoloured

bluem

ust

becon

nectedto

the

terminal

which

ism

arkedw

ithth

elettter

Nor

colouredblack.

The

wire

which

iscoloured

brown

must

beco

nnected

toth

eterm

inalw

hichis

marked

with

the

letterL

orcoloured

red.

Under

nocircu

mstan

cesshould

cut-o

ffm

ainsplugs

beused.

They

shouldbe

disp

osed

ofim

mediately.

Defective

mains

leadsm

ust

becom

pletetlyreplaced.

Only

3A

spare

fusesm

ust

beused

asappro

vedby

AST

Aaccording

toB

S13

62

andth

efu

secover

must

bem

arked3

Aor

with

the

corresp

on

din

gcolour

code.

The

plugm

ustnever

beused

without

fuse

covers.S

pare

fusecovers

areavailable

fromelectrical

suppliersor

the

PFAFF

agen

cies.

Please

alsoobserve

the

generalsafety

no

teson

page2.

ZfindZ

ntsonP

ae4an>

Page 3: PFAFF 4870 Instruction

r1

Page 4: PFAFF 4870 Instruction

Parts

ofth

ehobbylock

48

70

(1)U

pperthread

tension—

left(2)

Upper

threadtension

—right

(3)H

andleto

carry(4)

Looper

threadtension

—right

(5)L

ooperthread

tension—

left(6)

Looper

threadtension

forchainstitch

(7)D

isplay(8)

Window

forthe

stitchlength

(9)W

indowfor

thedifferential

feed(1

0)K

eyfor

speedselection

(11)P

rogramkey—

leftC

ursorkey

—m

iddleM

odkey

(right)(1

2)LED

needledisplay

A,B

,C(13)

Knife

guard(14)

Looper

cover(1

5)S

ewing

foot(com

binationfoot)

(16)N

eedleplate

(17)A

djustingknob

forseam

width

(18)

Detachable

work

support(1

9)W

indowfor

theseam

width

(20)A

ccessoriesbox

(21)N

eedleholder

(22)L

everfor

the

sewing

footpressure

(37)R

ightoveredge

looper(38)

Converter

(39)L

eftoveredge

looper(40)

Chainstitch

looper(41)

Autom

aticlooper

thread

erfor

theleft

looper(42)

Knob

todisengage

upperknife

(43)K

nobto

disengageth

eright

overedgelooper

(44)P

ositioninglever

forth

echainstitch

looper(45)

Lever

todisengage

needleplate

(46)S

crewto

secureupper

knife(47)

Screw

tosecure

lower

knife(48)

Low

erknife

(49)U

pperknife

Page 5: PFAFF 4870 Instruction

A.

Important

safetyinstructions

Forthe

United

States

only

‘T

hissew

ingm

achineis

designedand

manufactured

forH

OU

SEH

OL

Duse

only.W

henyou

usean

electricappliance,

thefollow

ingbasic

safetyprecautions

shouldalw

aysbe

adheredto:

Read

allinstructions

beforeusing

thissew

ingm

achine.

DA

NG

ER

To

reducethe

riskof

electricshock:

1.T

hesew

ingm

achineshould

neverbe

leftunattended

when

pluggedin.

Alw

aysunplug

thisappliance

fromthe

electricoutlet

imm

ediatelyafter

usingand

beforecleaning.

2.A

lways

unplugbefore

relamping.

Replace

bulbw

ithsam

etype

rated15

Watts.

3.D

onot

reachfor

asew

ingm

achinethat

hasfallen

intow

ater.U

nplugim

mediately.

4.D

onot

placeor

storea

sewing

machine

where

itcan

fallor

bepulled

intoa

tubor

sink.D

onot

placein

ordrop

intow

ateror

otherliquid.

WA

RN

ING

To

redu

ceth

erisk

ofb

urn

s,fire,

electricsh

ock

,or

injuryto

perso

ns:

1.D

onot

allowto

beused

asa

toy.G

reatcare

isnecessary

when

thissew

ingm

achineis

usedby

ornear

children.

2.O

nlyuse

thissew

ingm

achinefor

itsintended

purposeas

describedin

thism

anual.O

nlyuse

attachments

recomm

endedby

them

anufactureras

containedin

thism

anual.

3.N

everoperate

thissew

ingm

achineif

ithas

adam

agedcord

orplug,

ifit

isnot

working

pro

perly,if

ithas

beendropped

ordam

aged,or

droppedinto

water.

Return

theappliance

tothe

nearestauthorized

dealeror

servicecenter

forexam

ination,repair,

electricalor

mechanical

adjustment.

4.N

everoperate

thesew

ingm

achinew

ithany

airopenings

blocked.K

eepventilation

openingsof

thesew

ingm

achineand

footcontrol

freefrom

theaccum

ulationof

lint,dust,

andloose

cloth.

5.N

everdrop

orinsert

anythinginto

anyopening.

6.D

onot

useout

ofdoors.

7.D

onot

operatew

hereaerosol

(spray)products

arebeing

usedor

where

oxygenis

beingadm

inistered.

8.T

odisconnect,

turnall

controlsto

off(,,O

”)position,

thenrem

oveplug

fromsocket.

9.N

everoperate

ona

softsurface

suchas

abed

orcouch

where

theair

openingsm

aybe

blocked.

10.D

onot

unplugby

pullingon

cord.T

ounplug,

holdthe

plug,not

thecord.

11.K

eepfingers

away

fromall

moving

parts.S

pecialcare

isrequired

aroundthe

sewing

machine

needle.

12.A

lways

usethe

properneedle

plate.T

hew

rongplate

cancause

theneedle

tobreak.

1 3:fY

onot

usebent

orblunt

rm&

tles.O

nlyuse

needlesrecom

mended

bythe

manufacturer.

14.D

onot

pullor

pushfabric

while

stitching.It

may

deflectthe

needle,causing

ittobreak.

15.

Sw

itchthe

sewing

machine

off(NO”)

when

making

anyadjustm

entsin

the

needlearea,

suchas

threadingneedle,

changingneedle,

threadingbobbin,

orchanging

presser

foot,etc.

16.A

lways

unplugsew

ingm

achinefrom

theelectric

outletw

henrem

ovingcovers,

lubricating,or

when

making

anyother

userservicing

adjustments

mentioned

inthe

instructionm

anual.

17.H

oldplug

when

rewinding

intocord

reel.D

onot

allowplug

tow

hipw

henrew

inding.

Please

alsoobserve

the

generalsafety

noteson

page2.

KEEP

TH

ESE

INST

RU

CT

iON

SIN

ASA

FEPLA

CE

Page 6: PFAFF 4870 Instruction

Notes

onsafety

Notes

onsafety

ford

om

esticsew

ing

mach

ines

accord

ing

toD

IN57

700,

Sectio

n28

orIEC

335,

Sectio

n28

.

1.T

heuser

must

exercisead

equate

cautionw

ithregard

toth

eup

and

do

wn

move

men

tof

the

need

leand

keepth

esew

ingarea

underco

nstan

tobservation

while

working.

2.W

hen

leavin

gth

em

achin

e,du

ring

main

tenan

cew

ork

orw

hen

chan

gin

gm

echan

icalparts

oraccesso

ries,alw

ays

disco

nn

ectth

em

achin

efro

mth

em

ains

bypulling

out

the

main

splug.

3.Ihe

maxim

“nperm

issiblew

attage

forth

esew

inglam

pis

5W

atts.

4.T

I,?tension

ofth

edrive

beltsh

ould

onlybe

idjustedby

aP

faffm

echan

ic.

5.Th

‘-3c[..ie

shouldbe

putinto

operationas

i.iicated

onth

esp

ecification

plate.

6.D

or..

placeany

objectsin

openingson

the

machine.

7.D

on

ot

use

the

sewing

machine

if:—

there

isvisible

dam

age,

—its

functionis

defective,—

itis

wet,

e.g.w

ithcondensation.

8.D

on

ot

pullth

em

ainsplug

outof

the

socketby

itscord.

9.If

thisappliance

isused

foran

oth

erpur

posethan

that

intendedor

ifit

isw

ronglyoperated,

we

cannotaccep

tany

liabilityfor

anydam

age

caused.

10.T

oavoid

the

riskof

electricshock,

donot

openth

em

achine.T

hereare

noparts

insideth

em

achinew

hichth

eu

sercan

repair.T

histh

eex

clusiv

eresp

on

sibility

ofour

qu

alifiedserv

icestaff.

11.B

esu

reto

use

onlyoriginal

PFAFF

parts.

En

viro

nm

ent

The

recom

men

ded

environment

is:A

mbient

temperatu

re10

00

Cto

40

°C

Hum

idity20%

to80%

This

sewing

mach

ine

isa

high-qualityele

ctro

-mech

anical

app

liance;

itis

am

achinefor

sup

ervised

usein

the

home.

Itshould

beoperated

insu

cha

way

that

itis

notex

po

sedto:

du

st,sev

eredam

pness,direct

sun

ligh

t,sta

ticele

ctricity

,heat-p

roducin

gobjects,

corro

sivech

emicals

orliquids.

To

permit

adeq

uate

ventilationth

em

achinem

ustbe

keptunblocked

andu

sedon

afirm

andeven

surface.

Treatm

ent

Alw

aysm

akesure

notto

dam

age

yourm

achin

eby

knockingor

droppingit.

Cleaning

Housing

and

disp

lay:

To

cleanth

ehousing,

usea

dry,clean

andsoft

clothw

hichis

freeof

fluff.T

orem

oveany

stubbo

rndirt,

usea

softcloth

with

alcoholor

paraffin.

Please

Note!

Nev

eru

sein

secticides

orch

em

icalpro

ducts

such

aspetrol

(gas)or

thinchem

icalsto

cleanth

eh

ousin

g.

2

Page 7: PFAFF 4870 Instruction

Sim

ple,up-to

-date

sewing

Congratulations!

You

havebought

ahigh-quality

productth

atprovides

uniqueadvantages.

Your

newhobbylock

48

70

cantake

anym

aterialin

itsstride

andw

illsew

,trim

andn

eatenup

foryou

inone

operation.

Your

PFAFF

hobbylockfeatu

resthe

verylatest

indesign

andtechnology,

andit

isjust

aseasy

touse

asthis

instructionm

anualis

tofollow

.

Ifyou

nowtake

abit

oftim

eto

studythe

instructionm

anualnothing

cango

amiss.

Itis

certainlytim

ew

ellspent,

sinceit

isthe

onlyw

ayto

findout

justw

hatyour

machine

cando

andput

itto

fulluse.

Ifyou

haveany

furtherquestions

justask

yourPFA

FFdealer.

He

ishappy

tobe

ofservice

with

anyhelp

oradvice.

So

nowlet’s

getstarted!

We

wish

youm

anyen

joy

ablehours

creatingyour

veryow

nfashion

ideas.

3

Page 8: PFAFF 4870 Instruction

Co

nten

ts

2thread

overlookstitc

h...........

2thread

overlockw

ithsafety-stitch

.-

2thread

rolled/flathem

3thread

overlookstitch

3thread

overlookw

ithsafety-stitch

3thread

rolled/flathem

4thread

overlockstitch

Accessories

Accessory

boxA

utomatic

thread

erB

eadsew

ingfoot

Blindstitch

footC

hainstitchC

hainstitch—

needleA

Chainstitch

looperC

hangingth

eknife

Changing

thelight

bulb(sew

inglight).

Changin9

the

needleC

hangingth

eneedle

plateC

hangingth

esew

ingfoot

Changing

the

spoolC

leaningth

eknife

Cleaning

the

needleplate

Converter

Converting

the

machine

(chainstitch)C

orrectionof

thethread

tensionD

etachablew

orksupport

Differential

feedD

isengagingth

eoveredge

loop

er.D

isengagingth

eupper

knifeD

isengagingth

eupper

knifeD

isplayE

lastictape

sewing

footE

lectricalconnection

Electronics

Entering

newdata

Footcontrol

Freearm

Gathering

footG

imp

threadstitching

footK

nobto

adjustseam

width

Lace

sewing

footLED

needledisplay

(A,

B,C)

Left

overedgelooper

Page

44

,53

4452

43,4

84

3534

465

—7

61015

,16

757

04

32017

78,7

98

02930

,31

30

2181804

9,5

032,3

345

-47

927,2

832323238728

,93

5—

40

4089737125

763815

,16

4

Page 9: PFAFF 4870 Instruction

Spoolnet.

67

5

Looper

cover1

2L

ower

knife.

79M

ainsw

itch9

Maintenance

andm

alfunction77

—83

Material

guideplate

33N

eedleplates

Nand

R53

Needle

threader19

Norm

alaccessories

66,67

Oiling

81O

veredgeneedles

20,21

Practical

sewing

41—

55P

roblems

when

sewing

82—

83P

rogramchart

56—

63P

rogramm

inglanguage

36R

ightoveredge

looper14

Rolled

hem52,

53S

afetyinstructions

1S

ecuringthe

seam14

Setting

theprogram

s39

Sew

ingfoot

chart68

Sew

ingfoot

lever22

Sew

ingfoot

pressure3

4S

ewing

test23

Special

accessories68

—76

Specifications

84

Speed

pre-selection37

Spool

disc67

Spool

stands1

1S

tandardthread

tension42

Stitch

lengthadjusting

knob26

Taping

foot69

Technical

part7

—3

Thread

charts54,

55T

hreadcutter

24

Thread

unreelingdisc

67T

hreadingthe

looper14

—18

Threading

theneedles

20,21

Threading

thethread

guides1

3

Upper

knife78

Upper

knifelock

34

Waste

box1

2

Page 10: PFAFF 4870 Instruction

*

Page 11: PFAFF 4870 Instruction

Tech

nical

partE

lectricalconnection

Detachable

work

supportA

ccessorybox

Spool

stands

Waste

box/

loopercover

Threading

thethread

guidesand

thelooper

Threader

Threading

theneedles

Sew

ingfoot

leverS

ewing

test/thread

cutterS

eamw

idthadjusting

knobS

titchlength

adjustingknob

Differential

feedC

hangingth

eneedle,

sewing

footand

needleplate

Converting

the

machine

forchainstitch

seamFixing

theupper

knife/sew

ingfoot

pressure

page8,

9page

9page

10page

11page

12

page13

—1

8page

19page

20,21

page22

page23,

24

page25

page26

page26

—2

8

page29

—31

page32,

33

page34

7—

...-n,-v

--—,,.,,

Page 12: PFAFF 4870 Instruction

Electrical

connectio

n

Connect

them

ainscord

between

socket(29)

ofthe

sewing

machine

andthe

wall

socket.

Connecting

the

footcontrol

Connect

theplug

ofthe

footcontrol

with

theconnection

socket(31)

ofthe

sewing

machine.

The

presetarea

ofthe

sewing

speed(see

page37)

isregulated

bypressing

thepedal.

Cau

tion

:

Do

notput

anythingunder

thepedal.

8

Page 13: PFAFF 4870 Instruction

Iri

Main

switch

When

them

ainsw

itch(30)

isturned

onthe

sewing

lightis

turnedup.

The

machine

isnow

operational.

To

remove

detach

ab’e

work

sup

port

/free

armT

hefree

armis

particularlysuited

tosew

tubulargoods

without

anydifficulty.

To

doso

pullthe

detachablew

orksupport

(18)to

theleft.

Insertthe

workpiece

inthe

oppo

sitedirection.

9

Page 14: PFAFF 4870 Instruction

Accessory

box

To

remove:

To

open:G

ripin

therecess

beneaththe

accessoryO

penthe

accessorybox

(20)by

pressingbox

(20)and

pullout

inthe

directionof

thetw

opoints

,,A”.

thearrow

.

To

insert:Push

theaccessory

box(20)

intothe

appropriateopening

untilit

catches.T

hew

ords,PFA

FFhobbylock”

must

befacing

upwards.

10

Page 15: PFAFF 4870 Instruction

--

-,

Spool

stands

Before

thespools

areattached

youm

ustpull

thespool

stand(28)

outfully

inth

edirection

ofthe

arrow.

Extend

thetelescopic

threadguide

(24)fully.

Toassure

optimal

threadtake-up

thetw

oupper

telescopicextensions

must

beturned

slowly

untilyou

hearthe

ballstops

catchin

place.W

henyou

havefinished

sewing

pushin

thetelescopic

threadguide

(24)and

pushthe

spoolstand

(28)in

towards

them

achine,w

ithor

without

thespools,

untilit

catchesin

place.

11

Page 16: PFAFF 4870 Instruction

V

N

I

Waste

box

Insertthe

tabson

thew

astebox

(51)into

thenotches

onthe

loopercover

(14)and

pressit

down

againstthe

loopercover

untilyou

canhear

itcatch

inplace.

Totake

offreverse

thisprocess.

OD

DC

0

Looper

cover

Push

thelooper

cover(14)

tothe

rightuntil

itcatches

inplace

andthen

swivel

itdow

n.T

heindividual

threadingpaths

asw

ellas

theconverter

settingare

illustratedin

colouron

the

insideof

the

loopercover.

Note:

The

pow

ersupply

isin

terrup

tedw

henthe

loopercover

isopened

i.e.it

isnow

notpossible

tosew

with

them

achine.,,C

loselooper

cover”appears

inthe

dis

play.T

heLED

salso

flashthe

presetspeed.

12

Page 17: PFAFF 4870 Instruction

-

Thread

ing

thread

guid

esP

lacethread

spoolson

thespool

pins(25).

Forsm

allerspools

we

recomm

endyou

attacha

threadunw

indingdisc

tothe

spoolw

iththe

roundedend

tothe

bot

nd

accrdin

g

eoff

cccccc

000

000

With

bothhands

pullthe

threadthrough

thethread

guide(36)

andthe

appropriatethread

tension(1,

2,4,

5and

6).M

akesure

thethread

staysin

theslot

onthe

backthread

guide(36).

Set

thethread

tensionto

,,N”

andthread

asin

di

cated.

1.R

ightoveredge

looper(pink)

2.Left

overedgelooper

(yellow)

3.C

hainstitchlooper

(mauve)

4.R

ightneedle

(green)=

5.Left

needle(blue)

Note:

To

achievetop

sewing

resultsm

akesure

thatthe

threadis

pulledbe

tween

thetension

discsw

henthreading.

:edn

is.—

dis

13

Page 18: PFAFF 4870 Instruction

-,---1CD.-CD CD-I CD CD

CD_.CD CD(!)aCD CDDa CDO‘c CD ÷

. D-‘ o cc a

_

Ot3DCDCDOO<D

CDCDo -—øo CD

CD 0 CD

CD CD — O0 CD j

- a j -.

CD Da

-1

CD0a

cc

CD-I

CD

acc

0

CD-I

Page 19: PFAFF 4870 Instruction

Th

readin

gth

eleft

overed

ge

loop

er

1.T

hem

arkingon

thehand

wheel

must

bein

linew

iththe

marking

onthe

hou&ng.

2.T

hreadthe

leftoveredge

looper(39)

inthe

order1

to8.

Pullthe

threadfrom

threadguide

8through

thelooper

eye1

29

andpull

ita

bitw

ithyour

lefthand.

C

—0

00

000

DO

DD

15

Page 20: PFAFF 4870 Instruction

3.Pull

the

endof

the

thread

slightlyand

pushth

eslider

onth

elooper

thread

er(41)

toth

eleft

untilit

restsin

place.

çgtL

/Q

4.Pull

the

threada

bitm

orend

atthe

same

time

letthe

sliderslow

lyslide

back.T

heth

readis

automatically

inserted

ing

uid

e10.

5.W

iththe

tweezers

threadth

ethread

throughth

readgu

ide

(11)

anddraw

thethread

toth

eleft

underth

esew

ingfoot.

The

threadingpath

ism

arkedin

yellow.

Note:

Ifthe

slideron

theth

reader

(41)cannot

bem

oved,the

mark

ing

onth

ehand

wheel

isnot

correctlyset.

N

,

11

7

0

16

Page 21: PFAFF 4870 Instruction

Thread

ing

the

chain

stitchlo

oper

oo

per(4

O)

inthe

looperis

inthe

farthest

positionto

theright.

Il1

antiolockwjse

soth

atthe

chainstitch

zz

_

ID—

17

Page 22: PFAFF 4870 Instruction

V

/

o

4o/

,

Pushthe

positioninglever

(44)of

thechainstitch

looperdow

n.T

hism

ovesthe

looperto

thenex

tposition

toth

eright

andyou

canthread

iteasily.

I8

0V

6—

Draw

thethread

throughthread

guide7

tothread

guide8.

Now

pullthe

threadthrough

thelooper

eye9

andplace

itto

theleft

underthe

sewing

foot.R

eturnthe

positioninglever

(44)of

thechainstitch

looperto

itsoriginal

position.T

hethreading

,path

ism

arkedin

mauve.

/N

ote:If

youforget

toreturn

thepositioning

lever(44)

toits

originalposition,

the

/1

4870

does

not

sewch

ainstitch

./

18

Page 23: PFAFF 4870 Instruction

Need

leth

reader

(accessory

)

Low

erth

esew

ingfoot

with

the

sewing

footlever

(33)and

turnth

ehand

wheel

(32)until

theneedle

isin

itshighest

position.P

lacethe

thread

erfrom

the

AC

accessories(see

page66)

with

the‘42)

needlebetw

eenthe

two

guidelugs

B.A

Draw

thethread

throughslot

Aon

theth

reader

andhold

ita

bittaut.

B1

B

,S

lowly

lower

theth

reader

behindthe

needleuntil

the

small

hookC

passes

throughth

eneedle’s

eye.D

rawth

ethread

fromthe

bottomthrough

hookD

Band

thethread

automatically

passes

Abehind

hookC

.

D

Draw

theth

reader

backaw

ayfrom

the!

needle’seye.

You

cannow

pullth

eend

ofth

eth

readthrough

the

eyeto

thread

theneedle.

B

19

Page 24: PFAFF 4870 Instruction

Threading

the

need

les

1N

ote:W

henthreading

theneedles

make

surethat

thesew

ingfoot

lever(33)

isin

IIits

highestposition.

This

auto

matically

20

00

00

00

0releases

the

need

leth

readten

sion

s5

andm

akesit

easierto

threadthe

needles.0

00

6

7

Threading

the

overed

ge

need

lesB

orC

(with

orw

ithou

tn

eedle

A)

Thread

theoveredge

needlein

theorder

1to

8and

drawthe

threadthrough

theneedle’s

eye9

with

thethreader.

Draw

thethread

tothe

leftunder

thesew

ingfoot.

The

threadingpath

ism

arkedin

green

(dots).

I1

IhL-4

I0000000

j2

50

00

3I

DO

D

7

Threading

the

chain

stitchneedle

A

Thread

the

chain

stitchneed

lein

the

order1

to6

anddraw

thethread

throughthe

needle’seye

7w

iththe

threader.D

rawthe

threadto

theleft

overthe

sewing

foot.T

hethreading

pathis

marked

inblue

(triangles).

20

Page 25: PFAFF 4870 Instruction

Th

readin

govered

ge

need

lesB

and

C(w

ithou

tneed

leA

)

Thread

theoveredge

needlesB

andC

in7

theorder

1to

8and

drawthe

threadthrough

theneedle’s

eye9

with

the

__

__

__

__

___

__

__

threader.D

rawthe

threadto

theleft

underthe

sewing

foot.T

hethreading

11

pathfor

needleB

ism

arkedin

blue(dots)

forneedle

Cin

green(dots).

22

0000000

‘53’

000

LJD

D

678

oC

aution:

You

canonly

seww

ithone

ortw

o—

need

les(d

epen

din

gon

the

typ

eof

stitch).

_______________________________

Never

use

three

need

les.

Changing

asp

oo

iw

hen

the

mach

ine

isth

readed

Cut

thethreads

offclose

tothe

threadspool

andput

onthe

newspools.

Tie

theends

ofthe

oldthread

andthe

newthread

together.Pull

theneedle

thread

sout

ofthe

needles.L

ower

thesew

ingfeet.

Now

pullthe

threadsthrough

untilthe

knotsare

aboutsix

inchesthrough

thethread

guidebefore

theneedles.

Cut

theknots

offand

threadthe

appropriateneedles.

You

canalso

drawthe

looperth

reads

straightthrough

thelooper

eyeand

tothe

leftunder

thesew

ingfoot.

Itis

alot

easierto

pullthe

looperthreads

ifyou

turnto

loopertensions

(4,5and

6)to

—5.

21

Page 26: PFAFF 4870 Instruction

Closing

the

looper

cover

When

them

achinehas

beenthreaded

youm

ustclose

thelooper

cover(14).

No

teT

hepow

erto

them

achineis

cutoff

ifthelooper

coveris

openi.e.

itis

nowim

possibleto

sew.

,,Close

loopercover”

appearsin

thedisplay.

The

LEDs

onthe

speedselection

alsoflash.

Sew

ing

footlev

er

The

sewing

footis

raisedand

lowered

with

thesew

ingfoot

lever(33).

I.1

22

Page 27: PFAFF 4870 Instruction

Sew

ing

test

When

them

achinehas

beenthreaded,

youshould

sewa

testseam

.First

raisethe

sewing

foot.

Placea

fabricrem

nantunder

thesew

ingfoot

rightin

frontof

theneedle

andlow

erthe

foot.W

iththe

threadsheld

slightlytaut,

slowly

beginto

sew.

Since

thefabric

isautom

aticallyfed,

youjust

needto

guidethe

material

with

yourhands

(donot

pushor

pull).

Note:

Make

surethat

theth

reads

inter-loop

correctlyw

hensew

ing(thread

chain).

-0

0‘

000

\0

0000

000D

O0

00

0

23

Page 28: PFAFF 4870 Instruction

Thread

cutter

To

usethe

threadcutter

(26)you

must

sewover

theend

ofthe

seam.

Draw

thethread

chainthat

resultsto

thefront

overthe

threadcutter.

oO

/S

ecuringth

eseam

There

arevarious

ways

ofsecuring

theends

ofseam

s:

1.K

notthe

threadchain.

2.W

ithknitw

earyou

canpull

thethread

chaininto

theseam

with

acrochet

needle.3.

Sew

about2

inchesover

theend

ofthe

seam.

Turn

thesew

inground

andsew

backa

fewstitches

inthe

oppositedirection

without

cuttingthe

threadchain.

24

Page 29: PFAFF 4870 Instruction

Setting

theseam

width

aT

heseam

width

adju

sting

knob(17)

isreleased

ifit

ispressed

therig

ht.

You

cannow

setthe

seamw

idthyou

requireas

indicatedin

thew

indow(19).

The

rangeis

from3

to5

mm

andis

infi

nitelyvariable.

The

stand

ardsetting

Nis

3.5m

m.

Note:

The

seamw

idthsettin

gs

3to

5are

just

forneedle

C.

Ifneedle

Bis

used

E

theam

ount

that

isset

isincreased

by2.2

mm

to5.2

to7.2

mm

.F

orneedle

A

______________________

theam

ou

nt

setis

increasedby

4m

mto

7to

9m

mseam

width.

When

youhave

setthe

seamw

idthyou

require,press

theknob

tothe

right

un

tilit

catchesin

place,as

indicatedby

thearro

w.

This

preventsthe

seamw

idthbeing

inadvertentlychanged

while

sewing.

Note:

The

upperknife

must

belocked

when

sewing

verythick

fabricsor

fab

34).rics

with

differentthicknesses

(seepage25

w

Page 30: PFAFF 4870 Instruction

11.522.5N3,5I

4

Settin

gth

estitch

length

You

canset

the

requiredstitch

lengthby

turningthe

stitchlength

adjustingknob

(34),T

hesetting

isdisplayed

inth

ew

indow(8).

The

rangeis

fromI

to4

mm

andis

infin

itely

variable.T

hestan

dard

settingN

is3

mm

.

Differental

feedT

hedifferential

feedconsists

oftw

ofeed

dogs,one

behindth

eother,

that

assureth

atthe

fabricis

fedcom

pletelyevenly.

Itprevents

thedisplacem

entof

thetw

ofabric

lays.T

hetw

ofeed

dogscan

beset

separatelyi.e.

soth

atthe

frontdog

feedsm

orethan

the

reardog

orvice

versa.T

hisis

particularlyim

portantw

hensew

ingrib

knit.T

hediffer

entialfeed

isset

differentlydepending

onthe

typeof

fabric.Y

oucan

seeth

esettings

onpage

28.

26

Page 31: PFAFF 4870 Instruction

as

Settin

gth

edifferential

feedY

oucan

setthe

differentialfeed

byturning

theadjusting

ring(35).

The

rangefrom

0,5to

2is

infinitelyvariable

andis

indicatedin

thew

indow(9).

The

following

settingscan

beset

with

theknob:

Position

0,5=

frontfeed

dogsh

orter

movem

ent,rear

feeddog

longerm

ovement

Position

Nsam

em

ovement

offeed

dogsP

osition1,5

—2

=front

feeddog

longerm

ovement,

rearfeed

dogshorter

movem

ent

Note:

You

canalso

achievefashionable

effectsw

iththe

differentialfeed

dog:1.

Agathering

effectcan

beachieved

when

sewing

lightfabrics

with

setting2.

2..Aw

avelikeeffect

canbe

achievedfor

usew

ithrib

knitw

ithth

esetting

0,5.

27

Page 32: PFAFF 4870 Instruction

This

tableshow

spossible

setting

sfor

the

differentialfeed.

Sew

atest

seamto

dete

rm

inethe

correctsetting

foryour

fabric.T

hedifferential

feedcan

alsobe

setw

hilesew

ing.

Differential-

Correct

Fig.F

abricFeed

settingseam

nylon,tricot,

liningfabrics,

satin,0,5—

N1

apoplin

andsilk

lightcotton

anddenim

,N

2c

(normal

fabrics)

jersey,m

ediumcotton,

cut-pile1,5

3d

fabricsand

lightknits

heavyknitw

ear,very

elasticfabrics

1,5—2

4f

andrib-knit

b

Fig.1

Fig.2

d

je

28

Fig.3

9Fig.

4

Page 33: PFAFF 4870 Instruction

Changing

the

need

le

Sw

itchoff

the

main

switch

.T

orem

ove:

Low

erth

esew

ingfoot

andput

theneedle

inits

highestposition.

Now

pushthe

needlechanging

aidfrom

theaccessories

(seepage

66)from

belowright

upuntil

itcatch

esover

the

needle.L

oosenset

screws

(A,

Bor

C)

with

thered

screwdriver

andpull

the

needledow

nto

remove.

To

insert:

Insertth

eneedle

intoth

ehole

Eof

theneedle

changingaid,

with

theflat

sideL

ofth

eaid.

Insertth

eneedle

untilit

needleshank

Kfacing

towards

the

flat

catchesin

placein

theholder

andtighten

theneedle

setscrew

.R

emove

theneedle

changingaid.

KN

ote:T

hefollow

ingneedles

areused

forthis

machine:

System

ELX

705

(80or

90)If

usingthe

usualsew

ingneedles

130/

705H

thethread

tensionm

ustbe

increa

sed.

29

Page 34: PFAFF 4870 Instruction

Changing

the

sewin

gfoot

Sw

itchoff

the

main

switch

To

remove:

Raise

the

sewing

footw

iththe

sewing

footlever

(33)and

setthe

needlein

itshighest

position.P

ressthe

white

leveron

theback

partof

thesew

ingfoot

holder.T

hesew

ingfoot

isautom

aticallyreleased

fromits

mount

andyou

canrem

oveit

tothe

left,raising

the

springslightly.

To

insert:

Raise

thespring

slightlyand

placethe

sewing

footbeneath

the

sewing

footholder

soth

atw

henthe

sewing

footlever

(33)is

lowered

thepin

inth

efoot

catchesin

placein

thesew

ingfoot

holder.C

heck:P

leaseraise

thesew

ingfoot

leverto

checkth

atthe

footis

properlysecured.

Changing

the

needleplate

Sw

itchoff

the

main

switch

Note:

To

changethe

needleplate

youm

ustset

theneedle

width

adjustingknob

(17)to

3m

m.

30

Page 35: PFAFF 4870 Instruction

To

remove:

Raise

thesew

ingfoot

with

thesew

ing

foo

tlever

(33)and

setthe

needlein

itshig

hest

position.R

emove

thesew

ingfoot

andpress

down

thelev

erto

disen

gag

eth

eneed

leplate

(45).T

heneedle

plate(16)

israised

outof

itsm

ount.R

aisethe

needleplate

alittle

more

andrem

oveto

theleft.

2

To

attach:

Raise

thespring

onthe

sewing

footholder

alittle

andplace

theneedle

plate(16)

inthe

guidescrew

atthe

back.P

ressthe

needleplate

dow

nat

the

front

soth

atyou

canhear

itcatch.

31

Page 36: PFAFF 4870 Instruction

Converting

the

mach

ine

forch

ainstitch

,p

rogram

8

This

isonly

necessaryif

youdo

notw

ishto

cutthe

fabricedge.

Insertneedle

Aw

iththe

needlechanging

aidfrom

theaccesso

ries(see

page66).

Firstthread

thechainstitch

looper(40)

andthen

needleA

.O

penth

elooper

coverand

pullthe

knifeguard

(13)off

tothe

left.

Disengaging

the

upp

erknife

—-N1LSll

Note:

To

disen

gag

ethe

upperknife

(49)you

must

setthe

seamw

idthadjusting

knob(17)

to3m

m.

Low

erthe

knifeto

the

lowest

positionw

iththe

handw

heel.N

owturn

theknob

todisengage

the

upperknife

(42)fully

tothe

left(triangle

on0).

The

knifeis

disen

gaged.

Disengaging

the

righ

tov

eredg

elooper

To

disengagethis

looperyou

must

setthe

needlein

itslow

estposition

with

thehand

wheel.

Turn

the

knobto

disengagethe

looper(43)

fullyto

theleft

(triangleto

0).T

heoveredge

looperis

nowdisen

ga

ged.

N.

Ic32

Page 37: PFAFF 4870 Instruction

Insertin

gth

em

aterialg

uid

eplate

z

Insertthe

material

guideplate

fromthe

accessories(see

page66)

asillustrated

andm

akesure

that

itis

onth

esam

elevel

asth

eneedle

plate.N

owclose

the

loopercover

andset

theguide

rulerto

the

width

required.Y

oucan

nowsew

inchainstitch.

Cau

tion

:If

them

aterialguide

platehas

beeninserted,

itis

imperative

that

theright

overedgelooper

isdisen

gag

ed.

After

thechainstitch

seamhas

beensew

n,,return

them

achineto

the

originalcondition

asfollow

s:

1.O

penthe

loopercover

andrem

ovethe

material

guideplate.

Set

the

needlein

thelow

estposition.

2.N

owturn

theknob

todisen

gag

ethe

looperfully

tothe

right(triangle

to1).

The

rightoveredge

looperis

nowengaged

again.

3.S

etthe

knobto

adju

stthe

seamw

idthto

3m

m.

4.E

ngagethe

upperknife

byturning

theknob

todisengage

the

upperknife

fullyto

the

right(triangle

to1).

5.P

ushthe

knifeguard

inth

elooper

coverand

closeit.

6.Finally

attachthe

waste

boxagain.

/a__

y

___________

/

33

Page 38: PFAFF 4870 Instruction

Upper

knifelock

You

cansew

absolutelyany

typeof

fabricw

iththis

machine,

regardlessof

itsth

ickness.

Forextrem

elythick

fabricsyou

must

tightenth

eax

iallock

screwon

theupper

knifew

ithth

elarge

screwdriver

fromthe

accessories

(seepage

66).T

hisprevents

theknife

frombeing

displacedby

the

material.

Rem

ovethe

sewing

footand

needleplate

(seepage

30,31).

To

sewlight

fabricsthe

screwm

ustbe

loo

senedby

abouttw

oturns,

soth

atthe

knifecan

againm

ovein

anaxial

(side

ways)

direction.0

Note:

The

screwfor

theupper

knifem

ustbe

loosenedto

changeth

ecutting

width.

Adjusting

the

sewin

gfo

ot

pressu

re

You

canchange

the

sewing

footpressure

rialw

iththe

lever(22).

Position

1=

sewing

footpressure

forvery

thinfabric

PositionN

=sew

ingfoot

pressu

refor

with

medium

thickness

dependingon

thethickness

ofth

em

ate-

Position

3=

sewing

footp

ressure

forvery

thickfabric

34

Page 39: PFAFF 4870 Instruction

Electronics

--

To

programm

elanguage

page36

Speed

pre-selectionpage

37LED

needledisplay

page38

To

selectprogram

page39

To

enternew

datapage

40

35

Page 40: PFAFF 4870 Instruction

iflflrii.I

You

canch

oose

betw

eenth

efollow

inglan

gu

ages:

Czech,

Danish,

Germ

an,E

nglish,S

panish,French,

Italian,D

utch,N

orwegian,

Polish,F

innish,S

wedish

andJap

anese.

To

pro

gram

me

lang

uag

e:

Keep

boththe

pro

gram

key(11

left)and

thekey

(10)for

thespeed

preselectionp

ressedand

atth

esam

etim

esw

itchthe

machine

on.

,,cesky”(C

zech)now

app

earsin

thedisplay.

You

canselect

thelan

guag

eyou

wan

tby

repeated

lypressing

the

programkey

(11left).

By

pressingthe

curso

rkey

(11

middle)

on

ceyou

programm

eyour

language.

Each

descriptionin

thedisplay

will

nowap

pear

inth

elan

gu

age

that

youhav

ese

lec

ted.

36

Page 41: PFAFF 4870 Instruction

Speed

pre-selectio

n

On

this

machine

youcan

setth

em

axi

mum

speed

inth

reestep

sw

iththe

key(10).

By

pressingth

ekey

(10)you

chan

ge

the

maxim

umspeed

andone,

two

orth

reeL

ED

slight

up.O

neLED

lightsup

=0

tom

ax.500

rpm

Tw

oL

ED

slight

up=

0to

max.

1000rp

m

Note:

Each

time

them

achineis

switch

edon

itau

tom

aticallysets

aspeed

of1000

rpm.

Three

LE

Ds

lightup

=0

tom

ax.1500rp

m

ooo

“If

DC

I

\II,

—0O

1“

DE

In

El

37

Page 42: PFAFF 4870 Instruction

ae

aa

a

00

0000

II-O

DD

0.______

\___________________________________i

PFAFF

hobbylock4870

Dis

pla

y

LE

Dn

eed

led

ispla

y(A

,B

,C

)

The

LE

Ds

onthe

needledisplay

(12)show

which

ofthe

need

lesA

,B

or

Chave

tobe

inserte

dfor

theprogram

youhave

selected.

Pro

gr.

1P

rogr.

2P

rogr.

3P

rogr.

4P

rogr.

5P

rogr.

6P

rogr.

7P

rogr.

8P

rogr.

9P

rogr.

10P

rogr.

11P

rogr.

12P

rogr.

13P

rogr.

14P

rogr.

15P

rogr.

16P

rog

r.17

Pro

gr.

18P

rogr.

19P

rogr.

20P

rogr.

21

Note

:

2thread

flatlocknarrow

2thread

fiatlockw

ide2

threadflat

hem3

threadoverlock

narrow3

threadoverlock

wide

3thread

fiathem

4thread

overlockchainstitch

2thread

overlockw

ithsafety-stitch

wide

3thread

overiockw

ithsafety-stitch

wide

Wrapped

2thread

overlocknarrow

Wrapped

2thread

overlockw

ide2

threadroiled

hemW

rapped3

threadoverlook

narrowW

rapped3

threadoverlock

wide

3thread

flatlocknarrow

3thread

flatlockw

ide3

threadrolled

hemR

einforced2

threadoveriock

2thread

overlockw

ithsafety-stitch

narrow3

threadoverlock

with

safety-stitchnarrow

This

machine

hasthe

following

21program

s:

Beneath

this

dis

pla

yyou

will

findthe

LEDdis

pla

ys

forthe

10m

ost

imp

orta

nt

types

ofstitch

(program1

to10).

38

Page 43: PFAFF 4870 Instruction

..

t..

5;.

00

IDID

ID0000000000

IDID

1ID

“C

00

0ooo

IllD

DD

0

/

PF

AF

F

Select

the

desiredprogram

bypressing

theleft

programkey

(11).T

heprogram

sap

pear

inthe

ord

er1

—21.

Keep

thekey

pressed

andthe

programs

automatically

runon.

Ifth

em

odkey

(11right)

ispressed

thestandard

characteristicsof

thestitch

aredisplayed.

Set

them

achineas

indicatedin

thedisplay.

Sym

bolsab

ove

the

display:

Prog.=

programnum

ber

=stitch

length

=seam

wid

th

=differential

feed

ri>

.L

t=

sewin

gfoot

pressu

re

=need

leplate

Sym

bolsbelow

the

display:A

llthe

symbols

underthe

displayrefer

tothe

threadtensions.

They

arefrom

theleft

toth

eright.

—left

overedgeneedle

orchainstitch

needle(blue)

-left

orright

overedgeneedle

(green)-

rightoveredge

looper(pink)

—left

overedgelooper

(yellow)

—chainstitch

looper(m

auve)

213th

readov

erlock

witH

safe

tystitc

hn

arrow

j

;0

00

00

00

0O

O

00

0000

prj

Q

121I-N

--I-Nl---N

--I-N-±

N-1

01

-1.0

1-N

--I-N--I-N

--

,0000000000

00

0000

39

Page 44: PFAFF 4870 Instruction

Entering

new

data

This

machine

has21

pro

gram

s.T

heoptim

alvalues

areentered

asstandard

settings

foreach

program.

You

canch

ange

allthe

datafrom

thestan

dard

settings

inany

programand

storethem

.T

hereare

three

mem

ories(A

,B

andC

)available

foreach

programw

hichappear

rightbehind

theprogram

number

(e.g.21

A).

Proceed

asfollow

s:

1.S

electthe

desiredprogram

with

thep

rogram

key(11

left).

2.T

hestandard

settingap

pears

inthe

displayw

henth

em

odk

ey(11

right)is

pressed.

3.If

the

mod

key(11

right)is

pressedagain,

theletter

Aap

pears

besidethe

programnum

beras

anindication

thatyou

cannow

enter

yourow

nvalues

inm

emory

A.

Ifth

em

odkey

(11right)

ispressed

againm

emory

Bap

pears

andif

pressedonce

more

mem

oryC

._

4.If

the

curso

rkey

(11m

iddle)is

pre

ssed,

the

displayfor

the

stitchlen

gth

appears.Y

oucan

nowalter

the

stitchlength

with

the

pro

gram

key(11

left).5.

Ifyo

uw

ishto

alterother

settings,p

ressthe

curso

rkey

(11m

iddle)until

thesetting

that

isto

bechanged

flashes.

You

cannow

setthem

asrequired.

6.P

ressth

em

od

key

(11right)

toenter

the

datain

mem

ory.P

ressth

em

odkey

untilyou

come

backto

the

previouslyselected

mem

oryA

,B,

orC

.A

llthe

newdata

has

nowbeen

enteredand

isretained

when

them

achineis

switched

off.If

youselect

yourm

emory

againthe

valuesthat

havebeen

entered

nowflash.

They

canof

coursebe

chan

ged

atany

time

asdescribed.

21

AIN

—N

-HN

-IN-1

01-1

.01

N---N

•-I•-N

00

00

00

00

00

00

0000

‘I,

IL

lX

Jt21A

1-N

-I-N

-I-

-N-

-N-

I

Ii11F

=’l

000

00

0000

00

0000

H--N

--I-N-I

NN

NI-i

d-lo

N--

I--N--I

N-

11r400

0000

0000

000

000

40

Page 45: PFAFF 4870 Instruction

Practical

sewin

gS

ettingthe

standardthread

tensionpage

42

Chainstitch

page43

3thread

overlockw

ithsafety-stitch

page43

3thread

overlockstitch

page4

34

threadoverlock

stitchpag

e44

2thread

overlockseam

page44

2thread

overlockw

ithsafety-stitch

pag

e44

Correction

ofth

readtensions

page45

—48

Converter

(2th

readseam

>page

49

—51

Rolled/flat

hem(2

and3

thread>page

52,53

Thread

chartpage

54,55

Program

chartpage

56—

63

41

Page 46: PFAFF 4870 Instruction

‘I

Settin

gth

estan

dard

thread

tensio

nU

niformth

readtension

dep

ends

onthe

typeof

fabricand

thethickness

ofth

ethread.

The

threadtension

shouldbe

correctedafter

thethread

interloophas

been-checked

(seepage

43

to47).

Turn

thevalues

indicatedon

the

threadtension

thumbw

heelsto

thecorresponding

coloursym

bol.

Ifyou

areusing

needleA

(onlyfor

chain

stitch)

youm

ustturn

the

valueto

the

bluetrian

gle.

Ifyou

areusing

needlesB

andC

turnto

thedo

ts.T

hem

auve

tensio

nset

ting

isonly

used

forch

ainstitch

.

,/

Iy_

00

000

000

00

000

00

0

DO

D0

42

Page 47: PFAFF 4870 Instruction

The

rightth

readten

sion

topside

Pro

g8

Chain

stitchcharnstitch

Thread

tensio

ns

topside

blue=

triangle

mauve

=triangle

IE

xamples

ofuse

Join

ing

linenor

jeans

partsw

ithout

serging

chainstitchunderside

underside

top

sideP

rog.21

ichainstitch

3th

readoverlock

with

safetystitch

iopside

(narro

w)

Thread

tensio

ns

overlockstitch

__

blue=

triangle—

toside

green

=dot

pink=

dot

yellow=

dotm

auve=

triangle

/E

xam

ples

ofuse

overlockstitch

undersideJo

inin

gseam

son

blo

uses

shirts

jeans

andbed

linenw

ithserg

ing

seam.

chainstitch.underside

underside

topside

Prog.

4or

5

overiockstitch

3th

readoverlo

ckseam

(narro

wor

wide)

topside

Thread

tensio

ns:

green=

dotpink

=dot

yellow=

dot

Exam

ples

ofuse

For

sergingall

fabnc

types

overlockstitch

undersideunderside

43

Page 48: PFAFF 4870 Instruction

Prog.

7

4th

readoverlook

seamT

hreadtensions:

blue=

dot

green=

do

tpink

=d

ot

yellow=

dot

Ex

amples

ofuse:

Forsew

ingand

sergingall

typesof

fabric,especially

suitablefor

stretchfabrics.

Prog.

1or

2

2th

readoverlo

ckseam

(narro

wor

wide)

FLA

TL

OC

KT

hreadtensions:

green=

dot

yellowdot

Exam

plesof

use:

Forsew

ingand

sergingall

typesof

fabric,especially

suitedfor

stretchfabrics

andfor

sewing

FLA

TL

OC

Kseam

s.

Prog.

9or

20

2th

readoverlook

with

safety-stitch

(wide

orn

arrow

)T

hreadtensions:

blue=

trianglegreen

=dot

yellow=

dotm

auve=triangle

Exam

plesof

use:

Forsew

ingand

sergingall

typesof

fabric.

overlockstitch

,top

side

top

side

ov

erlock

stitchun

dersid

e

undersid

e

—top

side

undersid

e

overlockstitch

,to

psid

e

overlockstitch

,uncle

rside

topsid

e

Ito

psid

e

overlockstitch

,undersid

e

chain

stitchu

ndersid

e

undersid

e

overlockstitch

,top

side

44

Page 49: PFAFF 4870 Instruction

Correcting

the

thread

tensio

n:

The

tensioncan

beset

between

—5

and+

5It

must

beturned

eitherto

the

—or

+range

dependingon

theseam

app

ear

IT

owards

+=

tightertension

Tow

ards—

=looser

tension

Prog

8

Chain

stitchT

hethread

tensionof

needleA

istoo

looseT

heblue

threadtension

must

beturned

towards

+

needlethread

A

Pro

g.4

or5

3th

reado

verlo

ckseam

(narro

wor

-‘

&w

ide)T

he

thread

tensio

nof

need

lesB

orC

istoo

looseT

hegreen

threadtension

must

beturned

towards

+

needlethread

BorC

Prog

4or5

3th

reado

verlo

ckseam

(narro

wor

leftw

ide)looper

threadT

heright

looperth

readis

tootau

t(pink

thread

tension)or

theleft

looperthread

isright

tooloose

(yellowth

readtension)

Both

looperthread

thread

tensionsm

ustbe

adju

stedaccord

inglyby

turningto

—or

+

/

45

Page 50: PFAFF 4870 Instruction

Prog.

4or

5

3th

readoverlook

seam(n

arrow

orw

ide)

The

rightlooper

threadis

settoo

loose(pink

tension)or

the

leftlooper

threadis

settoo

tight(yellow

tension).B

othth

readtensions

must

beadjusted

accord

inglyby

turningto

+or—

.

Prog.

7

4th

readoverlo

ckseam

The

leftlooper

thread

isset

tootight

(yellowtension)

orth

eright

looperthread

isset

tooloose

(pinktension).

Both

threadten

sions

must

beadjusted

accordinglyby

turningeither

to—

or+

.

Prog.

7

4th

readoverlook

seamT

heleft

looperth

readis

settoo

loose(yellow

tension)or

theright

looperthread

istoo

tight(pink

tension).B

oththread

tensionsm

ustbe

adju

stedacco

rdingly

byturning

eitherto

+or

—.

—ø

_rig

ht

..‘looper

thread

leftlooper

thread

11-

rightlooper

thread

leftlooper

thread

thread

leftlooper

thread

46

Page 51: PFAFF 4870 Instruction

Prog.7

4th

readoverlook

seamT

hethread

tensionon

needleC

istoo

loose.T

hegreen

tensionm

ustbe

turnedto

+.

Prog.

10or

21

3th

readoverlo

ckw

ithsafety

-stitch(w

ideor

narro

w)

Since

the3

threadoverlock

with

safety-stitch

isa

combination

ofch

ainstitch

anda

3th

readoverlook

seam,

youcan

findth

ew

ayto

adjustth

eseseam

son

pag

es45

and46.

Prog.

9or

20

thread

overlookw

ithsafety

-stitch(w

ideor

narro

w)

Since

the2

threadoverlock

with

safety-stitch

isa

combination

ofchainstitch

anda

2thread

overlockseam

,you

canfind

the

way

toadjust

these

seams

onpages

45and

51.

Prog.

7

4th

readoverlo

ckseam

The

threadtension

ofneedle

Bis

tooloose.

The

bluetension

must

beturned

to+

.

needlethread

B

47

Page 52: PFAFF 4870 Instruction

Prog.

4or

5

3th

readoverlo

ckseam

(narro

wor

wid

e)T

he3

thread

overlockseam

issew

nw

ithtw

olooper

thread

sand

one

need

leth

read(needle

changepage

29).T

heset

seamw

idths3

to5

mm

inthe

window

(19)only

apply

toneed

leC

.If

need

leB

isused,

the

settingis

increasedby

2,2m

m(seam

width

5,2to

7,2m

m).

3thread

overlockseam

Needle

BN

eedleC

4’

A5c

Standard

needlew

idthN

Standard

needlew

idthN

__

__

__

__

____

____

I5,7m

m

Needle

width

Needle

width

mm

.5,2

mm

,m

ax7.2

mm

mm

.3

mm

max.

5m

m

48

Page 53: PFAFF 4870 Instruction

Converter

Aserging

seamis

generallysew

nw

ith3

thread

s.If

youconnect

the

converter

youcan

disp

ense

with

onethread

i.e.you

justcontinue

tosew

with

2th

reads

andthus

savea

lotof

thread.W

herevera

2th

readseam

isenough

i.e.for

elasticm

aterialsand

materials

that

hardlyfray,

youcan

stillm

akeneat

edgesw

ithless

thread.Y

oucan

alsom

akevery

effective

fancy

seams

with

theconverter

usingm

ercerizedco

tton.

All

seams

that

aresew

nw

iththe

converter(38)

areonly

sewn

with

theleft

looperth

read(yellow

threadpath)

andw

ithone

needlethread.

Excep

tion:

Prog.

19is

sewn

with

two

needleth

reads

andthe

leftlooper

thread.

To

switch

onth

eco

nverter

)T

urnthe

handw

heeluntil

therig

ht

ove

/redge

looper(37)

issitu

atedto

the

rightof

the

need

le.

To

use

the

converter

(38)you

must

cut

offth

eright

looperth

readand

pullit

out

Page 54: PFAFF 4870 Instruction

The

lefthand

threadthat

runsover

theright

looperm

ustbe

pulledover

thepoin

ofthe

rightlooper

inthe

directionof

thearrow

asin

thisillustration.

0

0

N

fl

Pushthe

slideof

theconverter

tothe

leftuntil

thetriangles

arein

line.T

hepoint

ofinto

the

eye

ofth

e

Converter

switch

edon

—position

AC

onvertersw

itched

off—

positionB

To

switch

the

con

verter

off—

—C

Turn

thehand

wheel

slowly

untilthe

left—

—hand

looperthread

jumps

fromthe

point-

ofthe

right‘ooper.

Switch

theconverter

0(38)

offin

thisposition

(positionB).

Thread

theright

looper(see

page14).

50

Page 55: PFAFF 4870 Instruction

2th

readoverlook

seamw

ithco

nverter

I

undersideS

tandardseam

width

with

needleB

=5,7

mm

(rangefrom

5,2—

7,2m

m)

Standard

seamw

idthw

ithneedle

C=

35

mm

(rangefro

m3—

5m

m)

Progr

1or2

A2

thread

overlo

ckseam

(narro

wor

wid

e)FL

AT

LO

CK

This

illustrationshow

sth

e2

thread

overB

lockseam

with

the

thread

tensionsco

rrectly

settop

side

___________

•W

ays

ofco

rrecting

the

thread

tensio

ns

Prog

lor2

2th

readoverlo

ckseam

(narro

wan

dw

ide)

FLA

TL

OC

KL

ooperthread

Ais

settoo

tight(yellow

tension)or

needleth

readB

orC

istoo

Lloose

(greentension)

The

two

thread

tensionsm

ustbe

turn

edaccordingly

to+

IIunderside

or—

•<,B

topsid

e

The

looperthread

Ais

settoo

loose(y

eldersd

lowtension)

orthe

needleth

readB

orC

uni

eis

tootight

(greentension)

The

two

thread

tensionsm

ustbe

turnedaccordin

glyeither

to+

or—.

‘I

topside

51

Page 56: PFAFF 4870 Instruction

Prog.

3,6

,13

or18

Rolled

/flathem

Arolled/flat

hemis

usedfor

light,thin

fabricsand

alsocreates

adecorative

edge.It

isa

verysim

plew

ayto

adda

professionaltouch

tocloths,

scarvesand

valance.T

odo

sojust

convertth

em

achineas

indicatedin

thedisplay.

The

rolledhem

canonly

besew

nw

ithth

eneed

leC

andyou

must

alsoreplace

theneed

leplate

Nw

iththe

rolledh

emplate

R(see

page30,

31).T

hebest

suitedth

reads

aretextured

thread(bulk

thread)as

well

aspolyester

thread.O

nlytextured

threadshould

beused

forthe

looper.

Prog.

6

3th

readflat

hemtop

side

underside

0P

rog

.18

topside

3th

readrolled

hem

0

underside

52

Page 57: PFAFF 4870 Instruction

Needle

plates

Nan

dR

The

needleplate

Rm

ustbe

usedfor

all

Pro

g3

2th

readflat

hemT

heam

ountof

thread

usedfor

the

topside

2th

readflat

hemis

smaller

andth

eseam

seems

finerT

heco

nverter

mu

stb

esw

itched

onfor

thisflat

hem(see

pages49

50)

underside

Prog

13

2th

readrolled

hem

The

converter

must

besw

itchedon

for—

topside

thisrolled

hem(see

pages49

50)

underside

53

Page 58: PFAFF 4870 Instruction

Thread

chart

forth

e3

thread

overlockseam

with

safety-stitch

Fabric-Fabric

Type

ofstitch

Thread

Stitch

weight

length

Light

organdy,fine

knit,chainstitch

cotton2

—3

mm

fabricstaffeta,

silk,lining

no.8

0—

100fabric

syntheticth

read.

no

.70

—1

40

overlockstitch

cotton3

—4

mm

no.8

0—

100silkno.

80

—100

syntheticth

readno.

70—

140

Medium

-cotton,

tricot,linen,

chainstitchcotton

2—

3m

mw

eightchildren’s

fabricsno.

60

—100

fabricssilkno.

50

—100

syntheticthread

no.7

0—

140

overlockstitch

cotton3

—4

mm

.no

.60

—1

00

silkno

.50

—1

00

syntheticthread

no.70

—140

•Heavy

tweed,

jacket-cloth,chainstitch

cotton2

—4

mm

fabricsdenim

,heavy

clothno.

40

—60

silkno.

40

—60

syntheticthread

no.70

—140

overiockstitchB

aumw

olleno.

40

—60

syntheticthread

no.7

0—

140

knitschainstitch

cotton2

—3

mm

no.40—50

silkno.

50

—100

syntheticthread

no

.70

—1

40

overlockstitch

syntheticthread

no.7

0—

140

54

Page 59: PFAFF 4870 Instruction

Thread

chart

forth

e2,

3an

d4

thread

overlockseam

Fabricw

eightT

hreadS

titchlength

Light

fabrics:organdy,

finetricot,

cottonno.

80—

1002,0

—4

,0m

mtaffeta,

silk,silk

no.80

—1

00lining

fabricsynthetic

thread

no.70

—140

Medium

-weight

fabrics:cotton,

tricot,cotton

no.60

—1

00

2,0—

4,0

mm

linen,children’s

fabricssilk

no.50

—100

syntheticthread

no.70

—140

Heavy

fabrics:tw

eed,jacket

cloth,cotton

no.40

—60

2,0—

4,0

mm

denim,

heavycloth

silkno.

40

—60

syntheticthread

no.70

—140

Knits:

cottonno.

40

—60

2,0—

4,0

mm

silkno.

40

—60

syntheticthread

no.70

—14

0

2or

3thread

polyesterthread

no.120

—140

1,0—

2,0m

mrolled

hemtexturedth

read(bulky

thread)

55

Page 60: PFAFF 4870 Instruction

Program

chart

The

valuesfor

thread

tension,stitch

length,needle

thicknessand

thedifferential

feedsettin

gs

arebasic

settings

andm

ustbe

alteredor

correcteddepending

onth

etype

offabric,

fabricthickness

andthread.

The

differentialfeed

settingd

epen

ds

onth

etype

offabric

(seepage

28).A

llthe

pos

sibletypes

ofstitch

andth

esettin

gs

that

arenecessary

arelisted

inthis

chart.

Material

Programno.:

Needle

threadLooperthread

Sewing

footStitch

Stitchtype

(seepage

tensiontension

pressurelength

54,55)

iN

jN

NN

Nj

iI

u<blue

greenpink

yellowm

auve

Prog.12

threadtiatlock

seamlight

—5

+2

1—

N

lnarrowl

——

medium

-5+2

NN

heavy—

5+2

N—

3

Prog.22

threadflatlock

seamlight

—5

+2

1—

Nwide)

——

——

medium

—5

+2N

N

heavy-5

+2

N-3

Prog.32

threadflethem

light—

3+

11

—N

medium

-3+1

N1

to1,5

,mheavy

N—

3

56

Page 61: PFAFF 4870 Instruction

Note:

This

information

aboutth

eth

readspools,

positionof

thelooper

disengaginglever

andthe

converterposition

isonly

tobe

foundin

thischart

(notin

the

display).

DifferentialThread

spoole

Needleplate

feedposition

ofdisengaging

everjconverter

__

Arn

.._.B

Zii

OU

90N

N14

CD

90N

N14

LL

57

Page 62: PFAFF 4870 Instruction

89

Page 63: PFAFF 4870 Instruction

69A’

Page 64: PFAFF 4870 Instruction

Material

ProgramNo.:

Needlethread

Looper threadSew

ingtoot

Stitch

Stitchtype:

spa9

etension

tensionpressure

length

bluegreen

pinkyellow

mauve

Prog.overlock

seamw

ithlight

NN

NN

N1

—N

safety-stitch(wide)

medium

NN

NN

NN

N

-heavy

+1+1

+3+1

NN

—3

Progil

Wrapped

2thread

overiacklight

—1

—11

—N

seam(narrow

)

medium

-1

-1

N-

N

heavy—

1—

1N

—3

Prog.12W

rapped2

threadovertock

lightN

—1

1N

seam(wide)

medium

N-1

NN

$?heavy

N—

1N

—3

Prog.132

threadroiled

hemlight

NN

1—

N

medium

NN

N1

to1,5

heavyN

—3

Prog.14W

rapped3

threadoveriock

light—

1—

5+

31

—N

seam(narrow

)

medium

-1-5

+3

NN

heavyN

—5

+4

N—

3

Prog.15W

rapped3

threadoverlock

light—

1—

5+

31

—N

seam(wide)

——

7m

N-3

N

60

Page 65: PFAFF 4870 Instruction

[9

Page 66: PFAFF 4870 Instruction

Material

ProgramNo.:

Needlethread

LooperthreadSewing

footStitch

Stitchtype

(seepage

tensiontension

pressurelength

54,551

iN

Ni

Ni

Ni

bluegreen

pinkyellow

mauve

Prog,163

threaddecorative

seamlight

—5

+1

+4

1—

Nserging

Inarrowl flatlock

——

medium

-5+1

+4

NN

7\h

eav

yN

-3

Prog.173

threaddecorative

seamlight

—5

+1

+4

1—

Nserging

lwidel flatlock

medium

—5

+1

+4

NN

heavy—

5+1

+4

N—

3

Prog.183

threadroted

hemlight

NN

+3

1—

N

medium

NN

+3

N1

to1,5

heavy.

N—

3

Prog.19reinforced

2thread

overlocklight

—1

—1

—1

1—

Nseam

——

medium

-1-1

-1N

N

heavyN

N—

1N

—3

Prog.202

threadoverlock

seamw

ithlight

N—

5+

2N

1—

Nsafety-stitch

lnarrow)

medium

N-

5+

2N

NN

heavy+1

—5

+2N

N—

3

Prog,21

3thread

overlockseam

with

lightN

N+

3+

1N

1—

Nsafety-stitch

Inarrowl

medium

NN

+3

+1

NN

N

heavy+1

+1+

3+1

NN

—3

62

Page 67: PFAFF 4870 Instruction

—a-

•A

L_

t._

C_

a_

——

I

Page 68: PFAFF 4870 Instruction

I It 4: liii hi

Page 69: PFAFF 4870 Instruction

Thread

spoolnet

The

threadspool

netfrom

the

access

ories(see

page66)

isparticularly

usefulA

/as

itprevents

syntheticth

reads

fromunravelling

soeasily

andslipping

offthe

spool(Fig

A).

IiL

S•tff

5i

TB

I

Th

readunreelin

gd

iscT

hethread

unreelingdisc

fromth

eacces

Bsories

(seepage

66)is

usedfor

smaller

thread

spools.R

emove

the

thread

spoolcentering

piecesfrom

theth

readreel

pin‘L

i\

andput

onth

ethread

spools.P

lacethe

threadunreeling

discon

thebottom

ofC

thereel

pinw

iththe

roundedend

Cto

thebottom

asin

fig.B.

Reel

disc(sp

ecialaccesso

ries)T

hereel

discD

ishelpful

when

usinglarge

threadspools

(5000

—10

00

0m

)Place

thethread

spoolcentering

piece-1

(27)upside-dow

non

thereel

pin(25)

asillustrated.

The

reeldisc

preventsthe

loopsof

syn

theticth

reads

fromslipping

down

andensures

thatth

eth

readruns

smoothly.67

Page 70: PFAFF 4870 Instruction

Chart

forth

ecom

binationof

sewin

gfeet

and

need

leplates

Sew

ing

foo

tN

eedle

Accesso

ryP

artn

oplate

Com

binationfoot

Nnorm

alaccessory

29-9

24

993

-71

/28

7

Com

binationfoot

Rnorm

alaccessory

29

-92

4993-7

1/2

87

Taping

footN

specialaccessory

29-9

24

99

3-7

1/2

95

Blindstitch

footN

specialaccessory

29-9

24

993-7

1/2

91

Gim

pth

readsew

ingfoot

Hspecial

accessory29-9

24

993-7

1/2

94

Elastic

tape

sewing

footN

specialaccessory

29-9

24

993-7

1/2

92

Gathering

footN

specialaccessory

29-9

24

993

-71

/29

3

Cording

footN

specialaccessory

29-9

24

99

3-7

1/2

98

Bead

sewing

footR

specialaccessory

29

-924

99

3-7

1/2

96

Lace

sewing

footN

specialaccessory

29-9

24

99

3-7

1/2

97

1:

68

Page 71: PFAFF 4870 Instruction

Taping

foot

Differential

setting:S

ewing

footpressure:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

4or

5depending

onw

idthof

tape

N3—

5(adjustable

fora

tapew

idthof

4-

9m

m)

NNnormal

needleplate

Nsee

display(press

mod

key)taping

footsw

itchoff

Insertingth

etap

e:

1.S

etth

eneedle

athighest

point.

2.R

aisesew

ingfoot

andplace

tape

ing

uid

es1

fromthe

right.

3.P

ushtap

eto

rightsto

pw

ithth

eslid

e2.

4.D

ependingon

the

width

ofth

etape,

adjustits

positionin

relationto

theneedle

with

adju

sting

screw3.

5.Insert

fabricand

sewa

testseam

.

This

specialsew

ingfoot

isfor

sewing

ontap

esto

preventstretch

materials

(knit-w

ear)from

stretching.

Preparing

the

mach

ine:

Program

:

Stitch

length:S

titchw

idth:

/

69

Page 72: PFAFF 4870 Instruction

Blindstitch

sewin

gfo

ot

Blindstitch

isideal

forskirt

andtrouser.

seams

andw

hereverth

eseam

shouldnot

bevisible.

The

hemis

trimm

ed,serged

andsew

nin

oneoperation.

Prep

aration

ofth

em

achin

e:

Program

:S

titchlength:

Stitch

width:

Differential

setting:S

ewing

footpressure:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

44NNNnormal

needleplate

Nsee

display(press

mod

key)blindstitch

footsw

itchon

Sew

ing

:

1.B

eforesew

ingcut

2cm

offhem

part3.

This

preventsdisplacem

entof

theseam

.

2.Place

the

preparedhem

underthe

sewing

footso

that

the

foldedhem

part3

isunder

the

edgeguide

2.T

hecrease

line4

ofth

eouter

fabricm

ustrun

alongthe

edg

eof

guide2.

3.T

heneed

lep

enetratio

nin

the

ou

terfabric

isreg

ulated

asfollow

s:L

oosenthe

adustingscrew

1and

adjustthe

edge

guide2

soth

atonly

onethread

ofth

eouter

fabricis

caughtby

the

needle.

70

Page 73: PFAFF 4870 Instruction

Gim

pth

readsew

ing

foot

This

specialsew

ingfoot

isused

tosew

ingim

pth

reads

(cords,synthetic

threads)up

toa

thicknessof

1,0m

m.

This

pro

du

cesan

undulatingor

stifferhem

(e.g.on

wedding

dressesand

valance).

Preparing

the

machin

e

Program

:

Stitch

length:S

titchw

idth:D

ifferentialsetting:S

ewing

footpressure:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

Insertin

gth

eg

imp

thread

1.R

aisethe

sewing

footand

setth

eneedle

inits

highestposition.

2.Place

thefabric

underthe

sewing

foot.

3.T

hreadgim

pth

read(cord)

throughthe

hole1

andthen

placeit

inguid

e2

ofth

esew

ingfoot

shoe.

4.S

ewa

testseam

.

13(sw

itchconverter

on)or

prog.18

1,0to

1,53

to4

NNrolledseam

needleplate

Rsee

display(press

mod

key)gim

pthread

sewing

footen

gag

ed

71

Page 74: PFAFF 4870 Instruction

Elastic

tape

sewing

foot

This

specialsew

ingfoot

isfor

sewing

onelastic

tapein

oneoperation

atthe

same

time

astrim

ming,

sergirigand

—due

tothe

contractionof

theelastic

tape—

gath

ering.

Preparing

the

mach

ine:

Program

:

Stitch

length:S

titchw

idth:D

ifferentialsetting:S

ewing

footpressure:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

Insertingelastic

tape:

1.L

oosenthe

screw(2)

sothat

thebrake

(1)at

theopening

isopened

about1,5

to2

mm

.

2.Insert

elastictape

(3)and

drawit

backunder

thefoot.

3.T

ightenthe

brake(1)

againw

ithscrew

(2).T

helow

erthe

screw(2)

istig

ht

enedup,

thegreater

thepressure

ofthe

brake(1)

onthe

elastictape

andthe

greaterthe

gatheringeffect.

Note:

When

thesew

ingfoot

israised

theela

stictape

shouldbe

drawn

throughthe

brake(1)

againsta

slightresistance.

4

4,5

or7

dependingon

width

oftape

44to

4,5

NNor

3norm

alneedle

plateN

seedisplay

(pressm

odkey)

elastictape

sewing

footengaged

72

Page 75: PFAFF 4870 Instruction

Gath

ering

foot

Program

:S

titchlength:

Stitch

width:

Differential

setting:S

ewing

footpressure:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

7,lO

or2

lNN2N

or3

normal

needleplate

Nsee

display(press

mod

key)gathering

footen

gag

ed

Insertingth

efab

rics:

1.R

aisethe

sewing

footand

setth

eneedle

inits

highestposition.

2.Insert

thebottom

plyof

fabric1

bet

ween

theneedle

plateand

the

gath

ering

footup

toth

eupper

knife.3.

Placethe

upperply

offabric

2flush

with

the

lower

ply(right

sideto

rightside)

rightup

toth

eedge

4of

opening3.

4.A

lwys

sewa

testseam

todecide

thedesired

gatheringeffect

with

the

diffe

rentialfeed.

3

1

This

specialgathering

footis

forsew

ingtw

ofabrics

togeth

erand

gatheringthe

bottomply

inone

operation.

Preparing

the

mach

ine:

73

Page 76: PFAFF 4870 Instruction

Cording

foot

This

specialsew

ingfoot

isfor

sewing

acording

tapebetw

eentw

ofabric

pliesin

oneoperation.

Preparing

the

mach

ine:

Program

:S

titchlength:

Stitch

width:

Differential

setting:S

ewing

footpressure:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

Insertingth

efabric

plies:

1.R

aisethe

sewing

footand

setthe

needlein

itshighest

position.

2.Insert

the

bottomply,

cordingtape

andtop

plyto

geth

erflush

(rightside

toright

side)under

the

cordingfoot

upto

the

upperknife.

The

cording(piping)

must

beplaced

inguide

1.

3.L

ower

thesew

ingfoot

andsew

atest

seam.

7.1

0cr

21N

’3

—5

NNor

3norm

alneedle

plateN

seedisplay

(pressm

odkey)

cordingfoot

engag

ed

74

Page 77: PFAFF 4870 Instruction

Bead

sewing

foot

This

specialsew

ingfoot

isfor

sewing

onbeads,

sequins,strass

bands,lead

andordinary

cords.T

heseoperations

arecar-.

nedout

with

oneneedle

only.

Preparing

the

mach

ine:

Program

:

Stitch

length:S

titchw

idth:D

ifferentialsetting:S

ewing

footpressu

re:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

Sew

ing:

1.Slide

thebead

tapethrough

guide1

and2

tothe

backof

thefoot

foot(fig.

1).

2.Y

oucan

seww

ithor

without

theupper

knifein

allthe

seamw

idthsettings.

Guide

thefabric

alongthe

righthand

sewing

edge.

3.T

heneedle

shouldpenetrate

1to

1,5mm

alongthe

edgeof

thefabric

(fig.2).

Note:

Ifthe

beadis

sewn

ontothe

fabricedge,

theleft

needlem

ustbe

used(disengage

upperknife).

2F

ig1

1

fabricbeads

Fig.2

L1-1

,5m

m

4(for

small

beads)5

(forlarger

beads)3

to4

Nto

5

N1or

Nrolled

hemneedle

plateR

seedisplay

(pressm

odkey)

beadsew

ingfoot

optionallydisengaged

ornot

75

Page 78: PFAFF 4870 Instruction

Lace

sewin

gto

ot

This

specialsew

ingfoot

isused

forsew

inglace

orborders

tog

ether

oronto

the

workpiece.

Preparing

the

mach

ine:

Program

:S

titchlength:

Stitch

width:

Differential

setting:S

ewing

footpressure:N

eedleplate:

Thread

tension:

Sew

ingfoot:

Upper

knife:

Sew

ing

onlace:

1.R

aiseth

esew

ingfoot

andset

needlein

highestposition.

2.L

oosenscrew

3and

adjustguide

2so

thatw

hensew

ingthe

needlep

enet

ratesright

atth

eed

ge

ofthe

lace(and

thefabric

underneath).T

ightenscrew

3.

3.W

hensew

ingth

elace

ontoth

efabric

itm

ustsim

plybe

runth

rough

guide2

alongedge

guide1

(engageupper

knife).

4.Ifth

efabric

underneathis

notto

betrim

med

when

the

laceis

sewn

on,both

thelace

andthe

fabricm

ustbe

guidedflush

alongedge

guide1

(upperknife

disengaged>.

5.A

lways

sewa

testseam

.

41,5to

2,0NN1

orN

normal

needleplate

Nsee

display(press

mod

key)lace

sewing

footoptionally

disengagedor

not

•,-

....•—

..

,,

—-.

1‘

‘1’

-

i-E

76

Page 79: PFAFF 4870 Instruction

Main

tenan

ceand

malfunction

Changing

the

knivespage

78,79

Changing

the

lightbulb

page80

Cleaning

the

needleplate

page80

Cleaning

the

knivespage

81O

ilingthe

machine

page81

Sew

ingproblem

spage

82,83

Specifications

page84

77

Page 80: PFAFF 4870 Instruction

Changing

the

upper

knife

Sw

itchm

ainsw

itchoff

To

remove:

Take

outthe

upperknife

retainingscrew

(46)w

ithth

elarge

screwdriver

fromthe

accessories

(seepage

66)and

remove

the

upperknife

(49).

To

insert:

Insertthe

newupper

knife(49)

andtighten

itsretaining

screwloosely.

Turn

thehand

wheel

untilth

eupper

knifeis

inits

lowest

position.J.

0If

ii

EIn

thisposition

the

fronted

ge

ofthe

Eupper

knifem

ustbe

0,5to

1,0m

m0

lower

thatth

ecutting

edge

ofthe

lower

ILr)

fullyadjusted,

youcan

tightenup

itsretaining

screw.

r

7knife.

When

the

upperknife

hasbeen

78

Page 81: PFAFF 4870 Instruction

-C

hangingth

elo

wer

knife

Sw

itchm

ainsw

itchoff

To

remo

ve:

Set

the

seamw

idthad

just

ingknob

(17)to

3.R

emove

the

sewing

footas

well

asthe

needleplate

(seepage

30,31).

Raise

theneedles

totheir

hig

hest

positionand

disengagethe

upperknife

(seepage

32).U

ndothe

lower

kniferetaining

screw(47)

with

thelarge

screwdriver

fromthe

accessories(see

page66)

andrem

ovethe

screw,

pressureplate

andlow

erknife.

To

insert:

Slide

thenew

lower

knife(48)

between

thelow

erknife

holderand

theupper

knife.Place

thepressure

plateon

thehole

inthe

lower

knifeso

that

thelonger

partw

iththe

slantedcorner

ispointing

backwards

tothe

machine.

Secure

thelow

erknife

andthe

pressureplate

with

theretaining

screw.

Insertthe

needleplate.

Bring

thecutting

edgeof

thelow

erknife

tothe

same

levelas

theneedle

plate.N

owtig

hten

upthe

retaining

screw.

79

Page 82: PFAFF 4870 Instruction

Chang

ing

the

light

bulb

Sw

itch

main

sw

itch

off

To

rem

ove:

With

the

to

ol

from

the

raccessories

(seepage

66)press

thelight

bulbright

intoits

holder.A

tth

esam

etim

etw

istth

ebulb

with

halfa

turn,anti-

clockwise

andrem

oveit.

To

insert:

Insert

thelight

bulbin

the

holderw

iththe

specialtool

andtw

istit

untilthe

pinson

the

bu

lb

catchin

place.

Now

press

thebulb

rightinto

the

holder,tw

istingit

clockwise

untilit

issecurely

fixed.N

ote:

The

maxim

umpow

erof

the

bulbis

5w

att.

Clean

in

gthe

needle

plate

FS

witch

the

mainsw

itch

off

Disengage

the

upperknife

(seepage

32).S

etlargest

stitchw

idth.C

leanthe

mark

edarea

carefullyusing

the

brushfrom

AC

theaccessories.

______________________________________

___

____

____

____

____

____

____

___j

i

80

Page 83: PFAFF 4870 Instruction

0

0

Cleaning

the

knifeY

oucan

nowrem

ovethe

upperknife

(49)S

witch

the

main

switch

offand

cleanthe

lintoff

theupper

andlow

erT

akeout

theupper

kniferetaining

screwknife

with

thebrush

fromthe

accessories(46)

with

thescrew

driversupplied.

(seepage

66).

/

0

-U

N6

I-

Oiling

the

machine

Before

usingyour

machine

youshould

make

ahabit

oflightly

oilingthe

marked

pointsw

iththe

oilfrom

theaccessories

(seepage

66).O

neor

two

dropsof

PFAFF

sewing

machine

oilare

enough.Allthe

otherparts

arem

adeof

aspecial

material

anddo

notneed

tobe

oiled.

81

Page 84: PFAFF 4870 Instruction

Sew

ing

pro

blem

san

dth

eirso

lutio

ns

The

machine

was

developedfor

the

simplest

operationpossible.

There

areno

com

pli

catedsettings.

Itis

however

possibleth

atthe

following

problems

ariseas

aresult

ofsm

allerrors

inthe

settings

andoperation.

These

problems

canbe

easilysolved

ifyou

followth

eseinstructions.

Problem

Cause

Solution

Needle

breakageT

heneedle

was

bentor

Insertnew

needleth

epoint

damaged.

(seepage

29>.T

heneedle

was

notproperly

Insertneedle

properlyinserted.

(seepag

e29).

The

fabricw

aspulled

tooD

onot

pullthe

fabricforcefully.

when

sewing.

Thread

breaksIncorrect

threading.T

hreadproperly

.(see

page13

—21).

The

threadgot

caught.C

heckif

youhave

caughtthe

threadon

thespool

stands

etc.T

hreadtension

istoo

tight.C

orrectthe

tension.(see

page45

—47

and51).

The

needlew

asnot

properlyInsert

needlecorrectly.

inserted.(see

page29>.

The

wrong

needlew

asused.

Use

needlesystem

ELX

705

Skipping

stitchesT

heneedle

isbent

orInsert

newneedle

the

pointdam

aged.(see

page29)

The

needlew

asnot

properlyInsert

the

needlecorrectly

inserted.(see

page29).

The

wrong

needlew

asused.

Use

needlesystem

ELX

705Incorrectly

threaded.T

hreadcorrectly

(seepage

13—

21).

Stitch

formation

Thread

tensionsw

ronglyR

e-setthread

tensio

ns

faultyset.

(seepage

45—

47and

51).

3or

4thread

over-T

heconverter

isin

itsT

heconverter

must

beset

lockseam

isir-

leftposition

A(see

pag

e50)

inits

rightposition

Bregular.

(seepage

50).T

heright

looperthread

isnot

sewn.

[.[FIIL82

rT

Page 85: PFAFF 4870 Instruction

Problem

Cause

Solution

The

machine

doesT

heelectric

power

hasC

loseth

elooper

covernot

operatealthough

beencut.

(seepage

12).the

main

switch

issw

itchedon.

The

fabricis

notLint

between

the

upperC

leanthe

knifetrim

med

neatly.and

lower

knife.(see

page81).

The

lower

knifeis

blunt.C

hangelow

erknife

(seepage

79).

Gathering

ofthe

The

threadtension

isR

educeth

readtension

seam.

tootight.

(particularlyfor

lightfabrics

seepage

42

—47).

The

differentialfeed

isC

orrectdifferential

feedincorrectly

set.(see

page27,

28)..

The

thread

isincorrectly

Thread

correctlythread

andhas

gotcaught

(seepage

13—

21).

83

Page 86: PFAFF 4870 Instruction

.liC

onten

tsof

the

cardboard

box

Machine

Footcontrol

Mains

cableM

achinecover

Waste

boxW

orkpieceguide

plateInstruction

manual

Sped

fications

Maxim

umsew

ingspeed

1 500stitches/m

mS

eamw

idth3

to7,2

mm

overlockstitch

7to

9m

mchainstitch

Stitch

length1

to4

mm

Differential

feed1:

0,5

/1:2

Needle

plateexchangeable

Nor

RL

ubricationm

anualM

ax.sew

ingfoot

height5

+1,5

mm

Needle

systemEL

x705

Needle

size80

or90

Num

berof

threads2,

3,4,

5D

imensions

310

x33

0x

320W

eight10,5

kg

84

Page 87: PFAFF 4870 Instruction

Parts

ofthe

ho

bb

ylo

ck4870

(23)T

hreadguide

with

colouredm

arkings

(24)T

elescoPic

threadguide

(25)S

poolpins

(26)T

hreadcutter

(27)S

poolcentering

(28)S

poolstan

ds

(29)P

ower

socket

(30)M

ainsw

itch

(31)Foot

controlsocket

(32)H

andw

heel(33)

Sew

ingfoot

lever

(34)S

titchlength

adjustingknob

(35)A

djustingring

forthe

differentialfeed

(36)R

eversethread

guide

(50)M

aterialguide

plate

(51)W

astebox

Page 88: PFAFF 4870 Instruction

010

CI)0

F)tO’

CI)Is)

01-&

Page 89: PFAFF 4870 Instruction

PFAFF

G.

M.

PfaffA

ktiengesellschaftW

erkK

arisruhe-DurlaC

hG

ritznerstrafe11

76227K

arlsruhe41

Printed

inW

estG

ermany

Druckerei

Gablenz

Gm

bHI

/

76

356

Wein

garten

.S

tettiner

StreS

s17

*

Subject

toalteratio

ns

indesig

n.

No.:

29—629

996

—3

10

00

DG

•engL11/93