Pfaff 341, 343, 345, 353, 342 Instruction Manual

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( PFAfF ) 341;

^ .(5)

( PFAFF )

56-12-09661

engl.

P 770

PrintedinGermany

^^(s)

Single-Needle

and

342;

Two-Needle

Instruction

343;

Cylinder-Bed

344;

Cylinder-Bed

Book

345

346

and

Sewing

and

Sewing

353

Machines

"

354

Machines

C)

1.

General

The

Pfaff 341. 343. 343 U-12

hand

balance

wheel

whose

Pfaff 353 with left-hand

needle.

Both

the

Pfaff 341

and

353

are

feature

All

of

c

oeginning or ending a seam. Observation of this rule prevents

of

The

It is

Pfaff Pfaff

Pfaff

Pfaff Pfaff Pfaff Pfaff Pfaff

unison

the

afore-mentioned machines

the

top

shaftistransmittedtothe

is

recommendedtomake

the

needle

holding

both

maximum

recommendedtorun

341 342 343

343

U-12 344 344

U-12 345 346

and

fitted with

feed.

eye

and

threads

stitch

lengthofstandard

and

vertical

balance

342

are

ordinary

sure

thread

jamming in

when

beginningtosew.

the

machinesatthe

345

are

all cylinder-bed

hookisarrangedtothe

wheel

has

the

sewing

equipped

drop

are

that

with

feed

equipped

hook

shaftbybevel

the

take-up

the

machines

compound

only.

The

with

hook raceway. It eliminates

is 4.5 mm (5V2 s.p.i.).

following

2.600

2.500

2.700

1.400 2,600

1.400

2.500

2.400

sleeve

leverisat

hook

Pfaff

top

s.p.m. s.p.m. s.p.m.

s.p.m. s.p.m.

s.p.m.

sewing

feed

345

take-up.

gears.

machines

right of

the

arrangedtothe

while

the

Pfaff 343. 344

and

the

Pfaff

The

rotating motion

its

highest

the

thread slipping

the

speeds:

with right-

needle.

left of

346

point

necessity

The

the

both

before

out

o

When sewing tightly woven or heavily

reducedtoprevent

overheatingofthe

dressed

needle.

fabrics,

the

sewing

speed

must be

On two-needle machines, the maximum sewing speed diminishes as the needle gauge

«creases.

To avoid trouble,

all parts in movable

other.

This

All machines

balance wheel. If desired, however, the machines

pulley.

should

are

these

machines should be run at about 70% of their top

contact

normally

regularly

have

be

the

equipped

become

thoroughly glazed by their action upon each

case

after

about

two

with a fixed pulley which is

can

be supplied with a disengageable

weeks'

constant

castinone

speed

use.

with

until

the

If fitted with a disengageable pulley, the machine is dispatched with the sewing mecha nism disengaged. To engage this mechanism, hold the balance wheel steady with your

left

hand

and

The only

better

spool

because

thread

tighten

holderonthe

the

control.

the

thread

large

locknut by turning it clockwise.

machine

stand

armissuppliedonspecial

which is regularly

supplied

request

with

andatextra

the

machine

cost

ensures

Setting

3

machineisdrivenbya

machines, is a squirrel-cage induction motor conforming to German

deifications.

ransmitted

elt for the

e

36

or

-quires some experience to correctly adjust the

3ssive

"le machine. v J

beltiscorrectly

9, by about 2 cm (abt.

'is

1

machineisfitted

'e

Up

Voltage

from

first

rapidly.

bolt (d in

until

pulleys.

the

All

Fig.

V-belt

pressureonthe

position,

with

the

securely

machine

the

Machine

V3-HP

clutch

motor

which,

like

all

motors

and

typeofcurrent

the

motortothe

time,

do not force it onto the

motors

are

pivotally

1). Loosen the nut of the hinge bolt or clamp screw k and

can be

arm

easily

shaft

tensionedifyou

V*')

midway

tighten

the

at the

factory

class and the permissible top speed.

are

sewing

machinebya

connected

placed in the

bearings

can

hinge

with

and

compressitwith

between both

bolt

the

correct

determinedbylocal

V-belt.

pulley

because distorted

to the

motor

bracketbymeans

grooves

tension

the

pulleys.

nut or

motor

of the balance

on the belt so as to

resultant

clamp

overheating

two

fingers,

screw k

and

motor

requirements.

When

without

(Fig.

supplied

DIN

with

42691

Power

mounting

V-belts

lift

wheel

and

sei2ln(^^

wear

of a

the

and

avoid

applying

1).

pulleyinaccor-

the

3.

Cleaning

Proper cleaning and regular

you put the machine into operation for the first time, take a clean rag and remove the

dust

accumulatedintransitaswell

and polished parts. Then apply a few drops of kerosene to all oiling points marked in

red on the

foot and run the

sewing machine oil No. 280-1-120122 for this purpose.

All

oiling

pointsinthe

2),

and

tilt the machine back, resting it on

he cotton inthe hook

soaked

the

similar

When replacing the needle plate, make sure that position finger F of the bobbin case base enters slot P on the underside of the needle plate

The

the grease in the cases should be grease the flanks of the bevel gear teeth should be greased only

lint

bevel

with

which

wooden

No.

and

Oiling

oiling

will

increase the service life of your

as the rust

machine

points

oil every day. Once a week, unscrew needle plate and feed dog and remove

and unthread the needle. Place a piece of

machine

are

cylinder

has accumulated in the

object.

briefly.

Next,

apply

markedbyarrowsinthe

arm

of the

machine,

raceway,

which

is accessible

vicinity

gears are enclosedincases and

c^ianged

280-1-120243.

Thanks to the special lubricating properties of this grease,

preventative

oil to

all

pertinent

loosen

wing

the

wooden machine rest.

through

of the

sewing

requirenospecial

once a year. For this purpose, use soda

covering

fabric

points of

illustrations.Toget at the

nutF.swing

hole O hook,

(Fig.

15).

maintenance,

lightly.

machine.

all

nickel-plated

under the presser

friction,

away

(Fig.

usingatoothpick

using

latchG(Fig.

16).

should be

except

Before

Pfaff

oiling

that

or

R

6835

R

6977

R

6976

.ing trouble, suchasskipping of stitches and thread breaking,

cannot

be remedied

applying excessive quantities of oil. Excessive oiling may result in soiling of

?rial and heavy working of the machine

strongly

•re

aasthat

ction.

direction

idicated

recommended

you

plug

the

machine

indicatedonthe

of motor pulley rotation is

by an

arrow

to test-run

in,

motor

in Fig. 3.

however,

rating

caused

the

machine

checktomake

plate,

and

correctifthe

by a mixture of oil residues

without

the

balance

thread

sure

motor

and

the

pulley

wheel

bobbin

line

voltageisth(

turnsinthe

turns

case.

right

toward

direction of pulley rotation is best checked before mounting the V-belt. If the V-belt

already lightly tipping on

•3

.viresatthe

r run a

ser

been

pulley

turnsinthe

threaded

footIsraised.

mounted,

motor

dieck

the

pedal

while holding

wrong direction,

terminal

machine

board.

unless

the

direction of rotation by switching on

the

you

balance

maintenance

have

fabric

wheel

man

under

fast.

has

the

merely to

presser

the

motor

exchange

footorthe

the

and

you,

5.

Removing

Raise

the

your

thumb.

illustrated

and

forefinger.

j

Winding

c^.

The

bobbinIswoundonthe

Placeaspoolofthread between

few

bobbin

Start

matically regulated

for

If the

positionofthe

tension

turnsofthread

winder

the

less

thread.

thread

the

take-up

above,

bobbin

when

by

lever

Slightly

and

the

Bobbin

discs3and,

on

spindle.

winderbypressing

the

bobbin

screw7.Turn

should pile up at

bobbin

Bobbin

lift

takeitoutofthe

Case

to its

highest

the

bobbin

power-driven

on pin 1.

the

Pass

from

bobbininclockwise

is full.

The

this

screw

one

winder

tension

position case

the

down lever 6.

amountofthreadtobe

end

bracket,asappropriate.

and

open

with

the

forefingerofyour

machine,

bobbin

thread

inside,

clockwise

together

winder

through

direction,

The

for

more

of the bobbin, loosen

latch

B (Fig. 4) with

with

the

bobbin,

shown

in Fig. 5.

eyelet2,clockwise

the

slotinthe

and

place

the

bobbin

thread,

winder

wound

or

counter-clockwise

screw

on

4 and

the

right

hand,

with

around

bobbin.

latteronthe

will

stop

the

bobbin

adjust

nail of

thumb

Wind

auto

as

and

a

is

the