Singer 457U135 Manual
Operator's
Guide
SINGER*
457U105,457U125,457U135,457U140
Machines
LUBRICATION
FOR
THE
AUTOMATIC
LUBRICATION
USE
SINGER
"TYPE
C"
OIL
ONLY
Check
oil
flow
in
window
when
machine
is
running.
Check
oil
flow
to
hook
by
holding
asmall
piece
of
paper
under
the
hook
while
machine
is
running.
After
15
seconds,
the
paper
should
show
an
oil
pattern
of
approx
1/32
inch
(0.8mm).
Less
oil
More
oil
Fill
oil
reservoir
to
high
mark.
Check
daily.
©
©
Regulating
screw
for
hook
lubrication
SPEED
The
maximum
speeds
recommended
for
Machines
of
Class
457U
are
5000
RPM
(4500
RPM
for
457U140),
however,
for
the
first
150
hours
machines
should
be
run
at
least
500
RPM
below
maximum
recommended
speeds.
From the library of: Superior Sewing Machine & Supply LLC
NEEDLES
Use
Singer
needles
Catalog
1906
{chromium
finished)
Machine
457U140
only
Catalog
8752
(chromium
finished)
—In
sizes
determined
by
size
of
thread
and
type
of
material
being
sewn.
UPPER
THREAD
1.
Before
threading,
any
remains
of
thread
must
be
removed
from
the
rotary
take-up.
CAUTION:
Be
careful
to
avoid
injury
from
thread
cutter
O •
2.
Thread
only
with
the
needle
bar
in
highest
position.
Move
needle
bar
to
highest
point
Move
needle
bar
to
highest
point
Loosen
screw
Insert
needle
up
as
far
as
possible
and
tighten
screw
Long
groove
SETTING
THE
NEEDLE
From the library of: Superior Sewing Machine & Supply LLC
BOBBIN
REMOVAL
AND
REPLACEMENT
BOBBIN
WINDER
Wind
thread
around
bobbin
REMOVAL
1.
Open
latch
2.
Hold
latch
and
pull
bobbin
case
from
hook
3.
Release
latch
4.
Bobbin
drops
out
REPLACEMENT
5. Holding latch, replace
bobbin
case
on
stud
6.
Release
latch
7.
Press
back
until
latch
catches
groove
in
stud
O
Place
bobbinon spindleas
far as it will go
Press
lever
against
bobbin
From the library of: Superior Sewing Machine & Supply LLC
THREADING
BOBBIN
CASE
Draw
thread
down
and
under
spring
0 Pull thread
into
slot
o Drawthread up
Into
delivery
eye
Lead
thread
into
slot
in
bobbin
case
Use
slotO
when
sewing Light-weight material.
Use
slot
©when
sewing
medium-weight
material.
THREAD
TENSIONS
BOBBIN
THREAD
NEEDLE
THREAD
4
More
Tension
Less
Tension
Tension
on
threads
should
be as light as possible,
while
still
sufficient
to
set
stitch
correctly
in
material.
More
tension
Less
tension
Regulate needle
thread
tension
only
when
presser
foot
is
down.
From the library of: Superior Sewing Machine & Supply LLC
STITCH
LENGTH
REGULATION
457U105,457U125,457U135
MACHINES
STITCH
LENGTH
REGULATION
457U140
MACHINE
TILT
MACHINE
TO
REAR
Loosen
lock
nut
Shift
connecting
rod:
To
left—longer
To
right—shorter
Tighten
lock
nut
RETURN
MACHINE
TO
SEWING
POSITION
REVERSE
FEEDING
Turn
regulating
screw
to
desired
stitch
length
FORWARD
FEEDING
Turn
regulating
screw
to
desired
stitch
length
CHANGING
TO
REVERSE
FEED
Push
lever
down
for
reverse
feeding
and
release
for
forward
feeding.
From the library of: Superior Sewing Machine & Supply LLC
ZIG-ZAG
STITCH
SETTING
457U105
MACHINE
Set
hand
lever
to
desired
zig-zag
stitch
within
0-8
bight
range
NEEDLE
POSITIONING:
Set
hand
lever
to
desired
needle
positions
Left:
Center:
Right:
ZIG-ZAG
STITCH
SETTING
457U125,457U135,457U140
MACHINES
Locking
screw
for
bight
control
lever
457U125
MACHINE
Set
hand
lever
to
desired
zig-zag
stitch
within
0-5
bight
range
457U135,457U140
MACHINES
Set
hand
lever
to
desired
zig-zag
stitch
within
0-8
bight
range
From the library of: Superior Sewing Machine & Supply LLC
PRESSER
FOOT
PRESSURE
The
pressure
on
the
material
should
be as
light
as
possible,
while
still
sufficient
to
ensure
correct
feeding.
CLEANING
Clean
out
any
lint
or
other
waste
around
the
hook,
between
the
feed
rows
on
the
underside
of
the
throat
plate
and
in
the
hook
area
of
the
oil
pan.
pressure
More
pressure
* A
Trademark
of
THE
SINGER
COMPANY
Copyright
©1987
SINGER SEWING MACHINE COMPANY
All
Rights
Reserved
Throughout
The
World
From the library of: Superior Sewing Machine & Supply LLC
Form
U3150
(Rev.
990)
Part
No.
543182-002
(Rev.
2)
Printed
in
Japan
From the library of: Superior Sewing Machine & Supply LLC
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