Singer 191D - Manuale utente

SINGER

191

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

Service

Manual

SINGER*

191

Machine

THE

SINGER

COMPANY

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

CONTENTS

Description

~lachine

ADJUSTME:'-JTS

Set

Needle

Bar

Correct

Height

Set

Check

Spring

Height

Set

Check

Spring

Tension

Set

Presser

Bar

Correct

Height

Time

the

Se\•;ing Hook and

also

Set

the

Sewing

Hook

Sidewise

Relation

the

Needle

Feed

Reverse

Lever

Feed

Regulating

Dial

Time

the

Feed

Set

Feed

Dog

Correct

Height

RHlO\'AL

AND

REPLACE½ENT

PRINCIPAL

ASSEMBLIES

Remove

the

Sev-;ing Hook

Replace

Oil

Filter

143.042

Replace

the

Sewing

Hook

Remove

and

Replace

the

Hook

Shaft

The

Oil

Pump

Remove and

Replace

the

Upright

Arm

Remove and

Replace

the

1',eedle Bar

Remove and

Replace

the

Presser

Bar

Needle

Thread

Take-up

Remove and

Replace

Needle

Bar

Wick

and

Needle

Bar

Connecting

To Remove

Oil

Wick

Holder

Install

New

Oil

Wick

Holder

The

Arm

Shaft

The

Bobbin

Winder

Shaft

Stud

Wick

• A

Trademark

THE

SINGER

COMPANY

1980

THE

SINGER

COMPANY

All

Rights

ReserYed

Throughout

the

World

Page

2 - 3

13 -

18 -19

19 -

-22

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

SET

NEEDLE

BAR

CORRECT

HEIGHT

PREPARATION:

Remove

face

plate,

slide

plate

and

throat

plate.

See

that

needle

correctly

set

needle

bar.

TIMING

MARl-:-=:::C

Lower end

bushing

(1),

Fig.

must

set

shown

Fig.

reset

bushing,

loosen

screw

(2).

CHECK:

When

needle

bar

its

lowest

point

(during

rotation

machine

pulley),

UPPER

TIMING

MARK

needle

bar

should

level

with

lower

end

bushing

(1).

Fig.

SETTING:

(

58.73

-1910200A

66.01

-1910300A

~~=:::::::;:r-Ll-

--- \

~-HR_O_A_T_P_LATE

SEAT

Loosen

clamping

screw

(3),

Fig.

Raise

lower

needle

bar

that

UPPER

TIMING

MARK

level

with

lower

end

bushing

(

1).

Then

securely

tighten

sere\\'

(

Check

timing

sewing

hook

instructed

page

Replace

throat

plate

and

slide

plate.

When

replacing

the

face

plate,

make

certain

that

the

screw

holes

the

face

plate

gasket

are

aligned

with

the

respective

screw

holes

the

face

plate;

avoiding

injury

the

gasket

and

consequent

oil

leakage.

SET

CHECK

SPRING

HEIGHT

PREPARATION:

Thread

the

machine

and

place

lightweight

material

under

presser

foot.

CHECK:

Turn

machine

pulley

over

toward

operator

slowly.

When

take-up

lever

begins

rise,

check

spring

(4),

Fig.

3 makes a

slight

dip

and a

return

its

higher

position.

Later,

take-up

lever

approaches

top

stroke,

check

spring

(4)

should

drawn

all

the

way

down;

setting

the

stitch.

lever

descends,

check

spring

(4)

returns

rest.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

SETTING:

Loosen

screw

(5),

Fig.

Turn

stud

(6),

Fig.

(at

the

same

time

turning

entire

tension

assembly)

either

over

toward

left

lower

check

spring

and

decrease

its

movement,

over

toward

right

raise

check

spring

and

increase

its

movement.

Securely

tighten

set

screw

(5).

IIIGIIER

)

O('

NOTE:

Under

certain

conditions

tacking,

may

necessary

set

the

check

spring

higher

than

otherwise

normally

set.

(

CAITTION:

Check

spring

height

setting

must

checked

each

time

different

foot

applied

machine.

(

SET

CHECK

SPRING

TENSIO~

PREPARATION:

Thread

the

machine.

Securely

tighten

set

screw

(5),

Fig.

Make

certain

thumb

nut

stud

(6),

Fig.

CHECK:

Tension

check

spring

(4),

Fig.

should

sufficient

ensure

action

top

speed;

but

still

light

enough

permit

it-

self

drawn

all

the

way

down

(as

take-

lever

approaches

height

stroke)

before

any

thread

drawn

through

the

tension

discs.

SETTING:

Using

large

screwdriver

slot

stud

(6),

turn

stud

either

over

toward

left

decrease

tension

over

right

increase

it,

shown.

~!ORE

TENSION

LESS

TENSION

Fig.

TIGHTEI';

I \

(

Fig.

NOTE:

The

tension

the

check

spring

may

require

different

settings

depending

upon

the

size

thread

used.

Heavier

thread

requires

tension

ensure

correct

thread

control.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

(

(B)

(7)

PREPARATION:

SET

PRESSER

BAR

CORRECT

HEIGHT

Fig.

FOOT

RESTING

FIRMLY

uror--

TIJROAT

PLATE

HIGHEST

POINT

Remove

face

plate

and

slide

plate.

CHECK:

Fig.

LOWEST

INT\

CLEAR

When

presser

foot

rests

firmly

upon

throat

plate

(with

feed

dog

below

throat

plate)

there

should

still

some

clearance

between

guide

bracket

(9),

Fig.

and

lifting

lever

link

(7),

shown

Fig.

When

presser

foot

its

highest

point

and

needle

bar

its

lowest,

top

presser

foot

should

clear

lower

end

needle

bar,

shown

Fig.

SETTING:

Loosen

clamping

screw

(8),

Fig.

Raise

lower

guide

bracket

(9),

required.

Securely

tighten

screw

(8).

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

TIME

THE

SEWING

HOOK

AND

ALSO

SET

THE

SEWING

HOOK

SIDEWISE

RELATION

THE

NEEDLE

PREPARATION:

Remove

presser

foot,

slide

plate,

throat

plate

and

feed

dog.

CHECK:

When

lower

timing

mark on

needle

bar

level

with

lower

end

lower

needle

bar

bushing

(1),

the

point

the

sewing

hook

should

the

center

the

needle,

shown

Fig.

Also,

when

point

sewing

hook

passes

needle,

clearance

between

hook

point

(10),

Fig.

and

needle

should

approximately

equal

thickness

piece

ordinary

notepaper

(about

.13

mm),

shown

Fig.

NOTE:

Not

only

point

sewing

hook

but

entire

"FLAT"

hook

point

should

clear

scarf

needle

blade.

Normally,

clearance

provided

between

hub

hook

and

oil

retaining

·collar.

SETTING:

Loosen two

set

screws

(11),

Fig.

hub

hook.

Then

retighten

one

the

set

screws

very

lightly

that

the

sewing

hook

can

still

turned

the

shaft.

Hold

shaft

immovable

and

turn

hook

required

bring

point

hook

center

needle

shown

Fig.

7 and

the

same

time

adjust

clearance

between

needle

and

hook

point

shown

Fig.

Tighten

set

screws

(11)

lightly,

turn

machine

pulley

make

certain

the

sewing

hook

correctly

set

relation

the

needle.

Then

securely

tighten

set

screws

(

11)

-5-

LOWER

TIMING

MARK

-----

HOOK

POIITT

CENTER

NEEDLE

Fig.

UPWARD

STROKE

Fig.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

FEED

REVERSE

LEVER

Before

the

machine

leaves

the

factory,

the

spring

tension

the

feed

reverse

lever

set

appropriate

tension

for

easy

and

comfortable

sewing

operation.

necessary

adjust

the

feed

reverse

lever

spring

tension,

tip

machine

back

and

loosen

feed

reverse

lever

spring

retainer

screw

(13)

holding

the

sHring

retainer

(12)

the

machine

leg.

Move

spring

retainer

(12)

down,

required,

and

finnly

tighten

screh

(13).

The

lighter

the

tension,

the

easier

operate

the

feed

reverse

lever,

however

the

ten-

sion

should

set

little

heavier

for

maximum

stitch

length

and

high

speed

sewing.

Fig.

FEED

REGULATING

DIAL

Nonnally,

the

machine

adjusted

sew a

maximum

stitch

length

4.2

mm.

This

however,

can

changed

s.p.i.)

relocating

the

feed

regulating

dial

ser-

ration

plate

(14)

the

recess

the

reverse

side

the

feed

regulating

dial,

shown

Fig.

11.

When

feed

regulating

dial

serration

plate

(14)

has

been

relocated

the

recess

the

reverse

side

the

dial,

replace

dial

machine

and

turn

dial

until

feed

reverse

lever

becomes

immovable,

then

check

that

graduation

"0"

the

dial

o'clock

position.

adjustment

neces-

sary,

loosen

feed

regulating

dial

cap

screw

and

turn

dial

clockwise

counterclockwise,

required.

Securely

tighten

the

cap

screw.

CAUTION:

Make

sure

the

feed

dog

clears

the

front

and

rear

edges

the

throat

plate

slots

when maximum

stitch

length

changed

mm.

SETTING

191

SETTING

..~'0

(

14)

Fig.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

TIME

THE

FEED

Before

the

machine

leaves

the

factory,

the

feed

and

feed

lifting

eccentric

set

for

average

sewing

conditions;

having

the

timing

mark (15)

(for

1910200A)

timing

mark

(16)

(for

191D300A)

align

the

timing

mark.(17)

provided

the

arm

shaft.

for

any

reason,

necessary

alter

the

timing

feed

and

feed

lifting

eccentric,

the

eccentric

should

adjusted

and

locked

desired

setting

with

set

screws

(18)

and

(19),

Fig.

12.

(17)

Fig.

NOTE:

When

making

above

adjustment,

push

the

eccentric

lightly

the

right

that

feed

rock

shaft

crank

connecting

rod

(20),

feed

connecting

link

(21),

feed

regulator

(22),

and

feed

regulator

hinge

stud

(23)

are

lightly

contact

with

each

respective

part

with

binding

excessive

play

between

the

parts.

(Fig.

13)

Fig.

-7-

(18)

(

15)

(

19)

( 2 3

(

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

SET

FEED

DOG

CORRECT

HEIGHT

ruLL

DEPTH

TEETH

THROAT

PLATE

~~~--..---i

Fig.

When

the

feed

dog

its

highest

position,

approximately

the

full

depth

all

tfue

teeth

should

project

above

the

top

surface

the

throat

plate,

shown

Fig.

14.

Before

checking

the

height

the

feed

dog,

set

the

machine

for

the

longest

stitch.

adjust,

loosen

the

clamping

screv,

(24),

Fig.

15,

and

raise

lower

the

feed

dog

(which

fastened

the

feed

bar

(25),

Fig.

15)

required.

Then

securely

tighten

screw

(24).

-11

Fig.

found

necessary

adjust

the

feed

dog

height

due

the

material

being

sewn

and/or

exchanging

the

feed

dog and

throat

plate,

should

adjusted

the

manner

explained

above.

NOTE:

Feed

Dog

should

not

contact

edges

the

throat

plate

slots

during

its

movement

but

should

located

centrally

relation

the

front,

rear

and

sides

the

throat

plate

slots.

-8-

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