Singer 457U15, 457U125, 457U135, 457U140 Operator’s Guide

Operator's

SINGER*

Guide

457U105,457U125,457U135,457U140

LUBRICATION

FOR

THE

USE

Check

machineisrunning.

Check
holding

under

is

running.

the
oil
1/32

AUTOMATIC

SINGER

oil

"TYPE

flowinwindow

oil

flowtohook

a small

the

hook

After15seconds,

paper

should

patternofapprox

inch

(0.8mm).

LUBRICATION

C"

OIL

when

by

pieceofpaper

while

machine

show

an

ONLY

Less

More

Machines

Fill

oil

reservoir

to

high

mark.

Check

daily.

oil

Regulating

hook

screw

lubrication

for

©

oil

SPEED

The

(4500

be

maximum

RPM

runatleast

speeds

for

500

recommended

457U140),

RPM

below

however,

maximum

©

for

MachinesofClass

for

the

first

recommended

150

457U

hours

speeds.

are

5000

machines

RPM

should

NEEDLES

Use

Singer

Catalog

1906

{chromium

Machine

Catalog

457U140

8752

(chromium

—In

sizes

determined

sizeofthread

of

material

needles

finished)

finished)

and

being

only

type

sewn.

by

SETTING

Move

to

Loosen

Insert

as

screw

Long

THE

needle

highest

screw

needleupas

possible

groove

NEEDLE

bar

point

and

far

tighten

UPPER

1.

THREAD

Before

threading,

remainsofthread
be

removed

rotary

from

take-up.

CAUTION:Becareful

avoid

injury

from

thread

cutter

2.

Thread

needle

only

with

barinhighest

position.

O •

Move

highest

any

must

the

the

needle

point

to

bar

to

BOBBIN

REMOVAL

AND

REPLACEMENT

REMOVAL

1.

Open

latch

2.

Hold

latch

and

pull

bobbin

case

from

3.

Release

4.

Bobbin

REPLACEMENT

latch

drops

out

5. Holding latch, replace

6.

7.

bobbin

Press

catches

Release

caseonstud

latch

back

until

grooveinstud

latch

hook

BOBBIN

WINDER

Wind
around

thread

bobbin

O

Place

far as it will go

bobbinon spindleas

Press

lever

against

bobbin