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
THREADING
BOBBIN
CASE
THREAD
TENSIONS
BOBBIN
THREAD
0 Pull thread
into
Use
slotO
Use
slot
Draw
and
slot
when
©when
thread
under
down
spring
o Drawthread up
Into
sewing Light-weight material.
sewing
medium-weight
NEEDLE
delivery
Lead
into
bobbin
material.
THREAD
eye
thread
slot
in
case
Tensiononthreads
be as lightas possible,
sufficienttoset
correctlyinmaterial.
4
stitch
should
while
More
Tension
Less
Tension
still
Regulate needle
tension
only
when
thread
presser
More
tension
Less
tension
footisdown.
STITCH
LENGTH
REGULATION
457U105,457U125,457U135
MACHINES
STITCH
457U140
LENGTH
MACHINE
TILT
Loosen
MACHINE
lock
nut
REGULATION
TO
REAR
REVERSE
Turn
regulating
to
desired
FORWARD
Turn
regulating
to
desired
CHANGING
Push
lever
reverse
feeding
for
forward
FEEDING
stitch
FEEDING
stitch
TO
down
feeding.
screw
length
screw
length
REVERSE
for
and
release
FEED
Shift
connecting
To
left—longer
To
right—shorter
Tighten
RETURN
TO
SEWING
lock
nut
MACHINE
rod:
POSITION
ZIG-ZAG
457U105
STITCH
MACHINE
Set
stitch
SETTING
hand
levertodesired
within
0-8
bight
zig-zag
range
ZIG-ZAG
NEEDLE
Set
positions
Left:
STITCH
hand
Center:
POSITIONING:
levertodesired
SETTING
457U125,457U135,457U140
457U125
Set
stitch
hand
levertodesired
within
MACHINE
457U135,457U140
Set
hand
levertodesired
stitch
within
Locking
bight
0-5
bight
0-8
bight
needle
Right:
MACHINES
screw
control
for
lever
zig-zag
range
MACHINES
zig-zag
range
PRESSER
FOOT
PRESSURE
The
pressureonthe
lightaspossible,
ensure
correct
CLEANING
Clean
out
the
hook,
undersideofthe
hook
areaofthe
material
while
feeding.
any
lintorother
between
still
the
throat
oil
should
sufficient
feed
plate
pan.
be as
to
waste
around
rowsonthe
andinthe
pressure
More
pressure
* A
Copyright
TrademarkofTHE
©1987
All
SINGER SEWING MACHINE COMPANY
Rights
Reserved
SINGER
Throughout
COMPANY
The
World
Form
U3150
Part
No.
543182-002
PrintedinJapan
(Rev.
990)
(Rev.
2)
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