Singer 29K71 Troubleshooting guide

From the library of: Superior Sewing Machine & Supply LLC

USE

GER

OILS

and

LUBRI

CAN

They

insure

freedom

from

lubricating

trouble

and give

longer

life

sewing equipment

The

following are

the

correct lubricants lor this machine:

TYPE

B -MANUFACTURING MACHINE

OIL,

HEAVY GRADE

When

oil

desired which will produce a minimum

stain on fabrics,

even

alter a long period

storage, use:

TYPE

D -MANUFACTURING MACHINE

OIL,

HEAVY GRADE

OTI-I£:R

5 I N

UBR

CANTS

TYPE

E -

THREAD

LUBRICANT

For lubricating the needle thread

sewi

machines

for

stitching fabrics

leather where a thread lubricant

required.

TYPE

F -MOTOR

OIL

For

oil

lubricated motors and plain bearings

power

tables and transmitters.

NOTE: All

the

above

oils

are

available

in 1

quart,

1 gallon and 5 gallon cans.

GEAR LUBRICANT

This

specially prepared grease

recommended

for

gear

lubrication on manufacturing sewing machines.

BALL BEARING LUBRICANT

This

pure grease

specially designed

for

the lubrication

ball bearings and ball thrust bearings

motors and

electric transmitters, ball bearing hangers

power

tables,

etc. Furnished in 1

lb.

and

lb.

tins.

From the library of: Superior Sewing Machine & Supply LLC

Form 20870

(957)

SERVICE

MANUAL

AND

PARTS

LIST

FOR

SINGER**

29K71, 29K72

and

29K73

UNIVERSAL

UPPER

FEED

MACHINES

SINCLE NEEDLE LOCK STITCH

THE

SINGER

MANUFACTURING

COMPANY

1958

The Singer Manufacturing Company·

**A

Trademark

THE

SINGER

MANUFACTURING

COMPANY

Printed in

.S.A

"--

From the library of: Superior Sewing Machine & Supply LLC

FOREWORD

This book contains complete information covering

operation,

adjustment,

and

parts

list, for Machines 29K71, 29K72

and

29K73. Descriptions

and

exploded

views

all

parts

assemblies on

pages

44 inclusive, will

found

helpful

when

ordering

any

part

the

machine

requiring

renewal.

From the library of: Superior Sewing Machine & Supply LLC

DESCRIPTION

Machines

29K71, 29K72

and

29K73, for stitching boots, shoes,

and

other

tubular

work

leather

and

fabrics,

have

the

following characteristics:

Single

Needle,

Lock

Stitch.

Stop Motion

Hand

Wheel-

releases

hand

wheel

from stitching

mechanism

for

bobbin

winding.

Horizontal Oscillating Shuttle.

Eccentric

Adjustment

for

Shuttle Timing.

Cylinder

Bed.

Replaceable

Steel Horn.

Universal

Upper

Feed

for

Stitching

any

direction

without

turning

the

work.

Stitch Length: 7 to 15 to

the

inch,

depending

material

being

stitched

and

operations

performed.

Presser Foot rise

during

feeding

action

: 1I 4 inch -(Maximum

clearance:

318 inch).

Double End

Needle

Plate

(two

sizes

needle

holes

each

end

for

various

sizes

needles).

Adjustable

Thread

Take-

Lever.

Two

Speed

Machine

Pulley.

ACCESSORIES

AVAILABLE UPON

ORDER

(at

additional

charge)

Attachment

for

fitting

Hand

Wheel

front

machine

(Part No. 82121

. .

{601405

601407

for foot

power.

Stand

for

mountmg

the

mach

601406

601408

f 1 .

ore

ectnc

power.

Detachable

Work Table

for

flat stitching

operations

(Part No.

83739,

83740,

83741).

Electric

Transmitter

S-9.

SPECIAL

FEATURES

MACHINE

29K71

End

cylinder

bed

1 inch

wide

and

7/ 8 inch

deep.

Space

right

needle

12-1I 4 inches.

Diameters

belt

grooves

2-718 inches

and

4-7

/ 8 inches.

MACHINE

29K72

End

cylinder

bed

1-51

inches

wide

and

1-1

I 16 inches

deep.

Space

right

needle

17-1/ 2 inches.

Diameters

belt

grooves

3-1 I 4 inches

and

5-1

/ 2 inches.

Large Bobbin.

MACHINE

29K73

End

cylinder

bed

1 inch

wide

and

7/ 8 inch

deep.

Space

right

needle

17-112 inches.

Diameters

belt

grooves

3-1 I4 inches

and

5-112 inches.

From the library of: Superior Sewing Machine & Supply LLC

SPEED

The

maximum

speed

recommended

for

these

ma-

chines

500

stitches

per

minute,

depending

ma-

terial

being

stitched

and

operations

performed.

For thick work,

patching,

mending,

and

stitching

elastics,

put

the

driving belt on

the

larger

pulley

the

machine

and

the

smaller

pulley

the

stand.

For light work,

put

the

belt

smaller

pulley

the

machine

and

the

larger

pulley

the

stand.

When

operation,

the

hand

wheel

must

always

turn

over

toward

the

operator

(counter-clockwise).

NOTE:

fitted

front

machine,

hand

wheel

must

always

turn

over

toward

the right (clockwise).

OIL

MACHINE

Fig.

Oiling Front Side

Machine

When

machine

received from

the

factory,

should

thoroughly

cleaned

and

drop

oil should

applied

to all

parts

indicated

Figs. 2, 3

and

Apply

drop

oil

the

stand

the

centers

upon

which

band

wheel

and

treadle

work. Also to both

ends

the

pitman

rod connecting

the

treadle

with

band

wheel.

Run

machine

for

few

minutes to

work

oil into

bearings.

When

the

machine

constant

use,

should

oiled

daily.

Fig. 3. Oiling Rear

Machine

Use

"TYPE

Oil,

sold

Singer Sew-

ing Machine

Company.

See inside front cover

this book for description

these oils.

Fig. 4. Oiling ShuHie Race

oil shuttle race,

raise

needle

bar

to its

highest

point

and

lift

feeding

foot A, Fig. 5

moving lifter B

upward.

Press

down

lever

Fig. 5

and

swing

needle

plate

to position

shown

Fig. 4.

Apply a

drop

oil to

the

face

shuttle

race

and

the

hole

shown

arrow

Fig. 4.

From the library of: Superior Sewing Machine & Supply LLC

OPERATE

THE

MACHINE

1. Raise

feeding

foot A, Fig. S by

moving

lifter B

upward.

2. Place

both

feet

upon

the

treadle.

3. Turn

top

hand

wheel

over

toward

you to

start

machine.

(If

hand

wheel

fitted on front of

machine,

turn

top

hand

wheel

from left to

right

start

machine.)

4. Allow

the

feet

move

freely with

the

motion

the

treadle.

Continue this motion with

alternating

pressure

heel

and

toe until a

regular

easy

movement

acquired

and

the

hand

wheel

kept

continuous

rotation

use

the

feet

alone.

When

familiar

with the

treadle

movement,

and

you

are

able

re-start

the

machine

without

turning the

hand

wheel

the

wrong

direction,

place

a piece of

material

under

the

feeding

foot.

6. Lower

feeding

foot

lowering

lifter

and

oper-

ate

machine

until you

have

become

accustomed

guiding

the

material.

Material

moved

along

the

feeding

foot only,

and,

the

direction of stitching

can

changed

de-

sired,

turning

wings, Fig.32.

make

curved

line

stitching,

operate

machine

slowly

and,

without

turning

work,

turn

the revolving

wings

enough

to pro-

duce

the

desired

curve.

Feeding foot rises

between

each

stitch

while

needle

the

material.

With

needle

serving

pivot,

ma-

terial

can

turned

any

direction.

When

desired,

the

feeding

foot

may

fixed to

work

straight

line, in

any

direction,

tightening

the

knurled

screw

A, Fig. 22.

Never

turn

the

work

alter

the

direction

the

feed

while

the

foot

pressing

the

material,

this

may

cause

missed stitches

and

damage

the

surface

the

work.

A....U

Fig. 5.

Operating

Machine

NEEDLES

Needles

for

MACHINES 29K71, 29K72

and

29K73

are

Class

and

Variety

x 3

for

cloth

and

x 4

for

leather.

Needles

x 3

are

made

sizes 11,

14,

16, 17, 18, 19, 21, 22, 23,

and

25, Needles

x 4

are

made

in sizes 9, 11, 14, 16, 18, 19, 21,

22, 23,

and

25.

The

above

needles

regularly

have

nickel finish

but

can

supplied

with chromium finish if

ordered.

The size

the

needle

used

should

deter

mined

the

size

the

thread

which must

pass

freely

through

the

eye

the

needle.

Rough

uneven

thread,

thread

which

passes

with difficulty

through

the

eye

the

needle

will

interfere

with

the

successful

use

the

machine.

Orders

for

needles

must

specify

the

Quantity

re-

quired,

the

Size

number,

also

the

Class

and

Variety

numbers

separated

The following

example

intelligible

order:

No. 16,

x 3 Needles",

for

cloth.

No. 16,

x 4 Needles", for

leather.

The

best

stitching results will

obtained

using

the

needles

sold

Singer

Sewing

Machine

Company.

THREAD

Left twist

thread

should

used

the

needle.

Either right

left twist

thread

can

used

for

the

bobbin.

determine

the

twist, hold

the

thread

shown.

Turn

the

thread

over

toward

you

between

the

thumb

and

forefinger

the

right

hand;

if left twist,

the

strands

will

wind

tight

er.

right twist,

the

strands

will

unwind

Fig. 6. Determining Twist

Thread

From the library of: Superior Sewing Machine & Supply LLC

REMOVE

THE

BOBBIN

Raise

needle

bar

to its

highest

point

and

lift

feeding

foot A, Fig. 7

moving

lifter

Fig. 5

upward.

Press

down

lever

Fig. 7

ana

swing

needle

plate

around

shown.

Turn

hand

wheel

until

point

shuttle

nearest

operator,

then

lift

out

shuttle

with

thumb

and

fore

finger.

Turn shuttle

over

and

bobbin

will

drop

out.

NOTE:

For 29K72

machine,

move

bobbin

retaining

spring

Fig. 7

outward

before

taking

out

the

bobbin.

of'

Fie. 7. Takine

out

the

Shuttle

WIND

THE

BOBBIN

Disengage

hand

wheel

from

operating

stitching

mechanism

drawing

out

plunger

Fig. 8

and

turning

it slightly

left

right.

Place spool

thread

the

spool pin

and

pass

end

thread

through

the

center

slot

hole

the

bobbin.

Then

press

the

bobbin,

with

slot

the

side

the

bobbin

facing

the

left,

far

it will

go,

bobbin

winder

spindle.

loosen

thumb

screw

Fig. 9

bobbin

winder

and

push

down

until

the

rubber

ring

presses

against

the

rim

the

hand

wheel,

then

tighten

screw.

Turn

hand

wheel

over

toward

you

when

sewing

and

simultaneously

guide

the

thread

with

the

finger

shown

Fig.

if'F

Fig. 8

NOTE:

hand

wheel

and

bobbin

winder

are

fitted

front

machine,

the

slot in

the

side

the

bobbin

must

face

the

outside.

The

top

hand

wheel

must

then

turn

over

the

right

(clockwise)

when

sewing

to insure

properly

wound

bobb

ins.

When

bobbin

sufficiently full,

remove

from

the

spindle.

loosen

thumb

screw

Fig. 9

winder

and

move

screw

upward

slot until

the

rubber

ring

out

contact

with

the

hand

wheel,

then

tighten

thumb

screw.

Fig.

9. Winding the Bobbin

Re-engag

the

ha nd

l with

the

tching me-

chanism

turning

plunger

Fig. 8 slightly

while

multaneously

turning

hand

wheel

slowly until

the

plunger

enters

the

hole

the

inner disc.

From the library of: Superior Sewing Machine & Supply LLC

THREAD

THE

SHUTTLE

FOR

29K71

AND

29K73

Fig.10

Turn

shuttle

over

ile

holding

bobbin

end

drew

the

thread

into

the

slot

the

edge

the

shuttle

end

under

the

end

the

tension

spring

. See Fig.

11.

Fig. 12

Hold

the

bobbin

between

the

thumb

end

forefinger

right

hond,

the

slot

the

edge

the

bobbin

being

the

bottom.

Allow

two

three

inches

thread

hong

free

Hold

the

shuttle

the

left

hand

with

the

wide

opening

uppermost.

Let

end

thread

pass

through

shuttle

opening,

then

place

bobbin

into shuttle.

See

Fig.

10.

Fig.

Poss

the

thread

through

delivery

eye

which

the

upper

edge

the

shuttle

. See Fig.

12.

From the library of: Superior Sewing Machine & Supply LLC

THREAD

SHUTTLE

FOR

29K72

Fig. 13

Place

bobbin

into shuttle

and

push back

the

re-

taining

spring

which will hold

the

bobbin

the

shuttle.

With

the

right

hand,

draw

the

thread

into

the

slot

the

edge

the

shuttle

far

possible. See Fig. 14.

Fig. 15

Hold

the

bobbin

between

thumb

and

forefinger

right

hand

with

the

thread

leading

from right

left.

Hold

the

shuttle

the

left

hand

with

its

open

end

and

its

retaining

spring

moved

outward.

See

Fig. 13.

Fig. 14

Then

draw

thread

the

left, up,

and

the

right

under

the

spring.

See Fig. 15.

Now insert

end

thread

through

the

small hole

the

edge

the

shuttle

and

through

the

eye

top

the

bobbin

position post. See Fig. 16.

Fig. 16

From the library of: Superior Sewing Machine & Supply LLC

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