Singer 211G146 User manual

Service
Manual
Form 30-289 G/i073-894
Printed in West-Germany
SINGER
INDUSTRIAL PRODUCTS
146
151
157
158
351
357
358
451
457
651
657
658

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
USE 5 I NG E R* 0 I LS
and LUBRICANTS
They insure freedom from lubricating trouble and give
longer life to sewing equipment
The Following are the correct lubricants for this machine:
TYPE A -MANUFACTURING MACHINE OIL, LIGHT GRADE
When an oil is desired which will produce a minimum of
stain on fabrics, even after a long period of storage, use:
TYPE C -MANUFACTURING MACHINE OIL, LIGHT GRADE
OTHER SINGER* LUBRICANTS
TYPE E -THREAD LUBRICANT
For lubricating the needle thread
of sewing machines for stitching
fabrics
or leathe.r where a thread lubricant is required.
TYPE F - MOTOR OIL
For oil-lubricated motors and plain bearings in
power tables and
transmitters.
NOTE:
All the above oils are available in 1 quart and 1 gallon
tins and 5 gallon drums.
GEAR LUBRICANT
-
This specially prepared grease is recommended for gear lubrica-
tion on manufacturing sewing machines.
• A Trademark of THE SINGER COMPANY

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Form
30-289
G/1073-894
SINGER
Service
Manual
MACHINES
211G146,
211G151
AND
211G157,
158,351,357,358,451,457,651,657,658
*A
Trademark
of
THE
SINGER
COMPANY
THE
SINGER
COMPANY
Copyright©
1965
by
The
Singer
Company
Copyright
under
International
Copyright
Union
All
Rights
Reserved
under
Inter-American
Copyright
Union
Printed
in
West
Germany

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
CONTENTS
DESCRIPTION ................................. 3
INSTALLATION ................................ 4
LUBRICATION ............................... 4-5
OP ERA TOR INFORMATION ...............•.... 5-9
ADJUSTMENTS ............................ .9-16
INDEX
Arm Shaft Connection Belt Replacement ........... .16 lnstal lat ion ................................•.. 4
Bobbin Case Opener, Adjusting .................. 14 Lubrication .................................... 4
Bobbin Case Opener, Timing .................... 14 Needles ....................................... 5
Bobbin Case, Removal From Sewing Hook ......... 13 Needle Bar Bushing (21 lG 146) ................... 10
Bobbin Removal ................................ 7 Nedle Bar Height (21 lG 146) ..................... 10
Bobbin Replacement ............................ 7 Needle Bar Height (211G151 & 211G157) .......... 10
Bobbin Thread Tension .......................... 8 Needle Bar Position Relative to Presser Bar ...... 10
Bobbin Winding ................................. 7 Needle Bar Rock Frame Removal ............•.... 16
Description of Machines ......................... 3
Needle Setting ......................•......•... 6
Feed Dog Adjustment ........................... 15
Needle Thread Tension .......................... 8
Feed Eccentric Adjustment ...................... 15
Pressure on Material ............................ 9
Feed Reversing Mechanism (21 lG 157) ............. 11
Speed .............. , .....................•.... 5
Feed Reversing Mechanism
Stitch Length Regulation ......................... 9
Adjustment (211G 157 /158) ................... 11
Take-up Lever Removal ......................... 16
Hook Height ................................... 12
Thread Controller ............................ .8, 9
Hook Lubrication .............................. 5
Thread Tensions ................................ 8
Hook Position Relative to Needle ................. 12
Threading Bobbin Case .......................... 8
Hook Removal ...•.•.•..................... 13, 14
Threading (Lower) ......................••.....• 7
Hoak Ti ming ............................•..... 13
Threading (Upper) ............ , ...............•. 6
ncc:ro,oTtl"IIJ /"IC u ~ r~1._, cc:
____ ,,,1 ,,....,11 ,_., J,,r--..-•111'--""
The Singer 211Gl46, 211G151 and 211Gl57 are high speed, single needle,
long arm, precision lock stitch machines, designed for top performance on a variety
of medium to heavy weight fabrics.
GENERAL FEATURES
Vertical axis hook with metered lubrication. Hook
can be removed without disturbing hook shaft.
Safety clutch, adjustable to sewing conditions, to
prevent hook damage during occasional strain.
Fully automatic lubrication to all moving parts
from two reservoirs enclosed in the machine.
Thread lubricator reservoir, inside face plate,
filled through oil hole without disturbing face plate.
Adjustable feed driving eccentric located on hook
driving shaft, produces a uniform stitch length at
all speeds.
2
Oil reservoir 1n hook saddle permits controlled
lubrication to bobbin case, bobbin case opener mech-
on ism and hook.
Arm shaft, hook shaft, and belt driven bed shaft
are mounted in boll bearings at rear and in automat-
ically lubricated plain bearings in front.
Plunger for changing length of stitch 1s on top
surface of bed.
Needle bar and needle bar driving mechanism are
lubricated automatically from oil reservoir in machine
arm.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Sleeve
type
toke-up.
Thread
toke-up
guard.
Belt
drive.
Knee
lifter.
Needle
bar
stroke:
1-5/16
inches.
Bed:
18-3/4
inches
long,
7
inches
wide.
Space
at
right
of
needle:
10-1/2
inches.
Federal
Stitch
Type
301.
SPECIAL FEATURES
211Gl46
DROP
FEED
Primarily
for shoes and a
variety
of
leather
products.
Bal I
bearing
roller
presser.
Clearance
under
roller
presser:
1/4
inch.
Maximum
stitch
length:
6 per
inch.
21
lGlSl
COMPOUND
FEED
Ideal
for
stitching
coots,
overalls,
roinweor,
work-
clothes,
sports
outerwear
and
similar
items.
C:::-ibinotion
of
needle
feed and drop feed
prevents
s!
:::ping
of
upper and
lower
plies
of
material
during
sewing,
insuring
uniform
stitching
and even
plies.
Clearance
under
presser
foot:
1/4
inch.
(3/8
inch
clearance
available
on
order).
Maximum
stitch
length:
5 per
inch.
211Gl57
COMPOUND
FEED/REVERSE FEED
Similar
to
machine
211G151
with
addition
of
feed re-
versing
mechanism
controlled
by
hand
or
foot.
Direc-
tion
of
feed con be
reversed
at
any
time,
and at any
speed. Spring
biased
reverse
lever
resumes forward
stitching
position
immediately,
when hand or
foot
pressure
is
released.
Clearance
under
presser
foot:
1/4
inch.
(3/8
inch
clearance
available
on
order).
Maximum
stitch
length:
6 per
inch.
The 211 G 158 machine
is
the same
as
the 211 G 157
machine. the only variation
is
the fact that a stitch length
of
approx.
10
mm
can
be
obtained
with
this machine, depen-
ding on the material sewn.
The maximum speed recommended for this machine
(211
G
158)
is
1800 rpm.
The
211
G
351;
211
G 357;
211
G 358;
211
G
451:
211
G 457;
211
G
651;
211
G 657 and
211
G 658 machines
are compound feed varieties
within
the machine class
211
G.
Machine Features Max. St. Length Max. Speed
211 G 351 Large Vertical Axis Hook. All other features comply
with
211
G
151
machine. 5
SPI
= 5
mm
2,700 RPM
211 G 357 Large Vertical Axis Hook. All other features comply
with 211 G
157
machine. 6
SPI
= 4.2
mm
2.700 RPM
211 G
358
Large Vertical Axis Hook. All other features comply
with 211 G
158
machine.
2½
SP/=
10
mm
1.800 RPM
211 G 451 Underbed Thread
Trimmer
with Thread Wiper.
All other features
comply
with
211 G 151 machine.* 5
SPI
= 5
mm
4,000 RPM
211 G
457
Underbed Thread
Trimmer
with
Thread Wiper.
All other features
comply
with 211 G 157 machine.* 6
SP/=
4.2
mm
4,000 RPM
211 G 651 Large Vertical Axis Hook; Underbed Thread
Trimmer
with
Wiper.
All other features
comply
with
211 G 151 machine.· 5
SPI
= 5
mm
2,700
RPM
211 G 657 Large Vertical Axis Hook; Underbed Thread Trimmer
with
Wiper.
All other features
comply
with 211 G 157 machine.* 6
SPI
= 4.2
mm
2.700 RPM
Large Vertical Axis Hook; Underbed Thread Trimmer
with
Wiper.
211 G 658 -
All other features
comply
with 211 G 158 machine.*
2½
SPI
=
10
mm
1.800 RPM
For machines with UTT. Service Manual Form No.
30-349G
should
be
used
as
supplementary literature.
• these machinesare
not
equipped
with
the automatic needle thread lubrication.
The lubricating pad has to be soaked manually if needle thread
is
to
be
lubricated. 3

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
DRAIN
OIL
JAR
STOP
Fig.
2.
Installation
View
ROD
INSTALLATION
Fasten
drip
pan
to
table
with
its
left
end
even
with
left
end
of
cut-out.
Fasten
knee
lifter
bracket
in
location
shown
in
Fig.
2
Assemble
it
so
that
lifter
rod
does
not
strike
drip
pan.
Screw
slots
in
bracket
provide
necessary
adjustment.
Set
stop-stud
to
stop
the
action
of
knee
lifter
as
soon
as
presser
foot
is
raised
enough
to
trip
hand
I
ever.
Screw
drain
pipe
into
drain
hole
in
drip
pan
and
attach
oil
jar
as
shown.
LUBRICATION
All
moving
parts
are
lubricated
from
two
reservoirs
enclosed
in
the
machine.
Before
starting
the
machine,
all
reservoirs
should
be
filled
and
critical
areas
lubricated.
FILL
THREAD
LUBRICATOR
RESERVOIR
WITH
SINGER*
THREAD
LUBRICANT
"TYPE
E"-----l
ON------
WHEN
MACHINE
,___.,..
,.,,
ISRU~
OFF
WHEN
MACHINE
IS
IDLE
4
FOR
MORE
THREAD
LUBRICANT
LUBRICATING
PAD
Fig.
5.
Thread
Lubrication
Use
Singer
Oil
"Type
A"
or
"Type
C"
for
arm
reservoir
and
hook
saddle
reservoir.
Fill
machine
arm
reservoir
to
high
mark
on
oil
sight
as
indicated
in
Fig.
3.
The
machine
arm
reservoir
contains
an
oil
vibra-
ting
pump
which
releases
oil
only
when
the
machine
is
operating.
Remove
oil
gauge
as
shown
in
Fig.
4
and
fill
hook
saddle
reservoir
to
full
mark
on
gauge.
Lubricate
hook
gears
and
opener
gears
by
applying
a
generous
supply
of
oil
to
oil
holes
indicated
in
Fig.
4.
Use
Singer
Oil
"Type
E"
for
thread
lvbricator
reservoir.
Fi
II
thread
lubricator
reservoir
through
oi I
hole
in
face
plate
as
shown
in
Fig.
S.
THREAD
LU-
BRICATOR
CONTROLLER
MUST
BE
ml
WHEN
MACHINE
IS
OPERATING
AND
OFF
WHEN
MACHINE
IS
IDLE.
To
increase
thread
lubrication,
turn
con-
troller
in
counterclockwise
direction
as
shown
in
Fig.
S.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
HOOK LUBRICATION
The bobbin case raceway is lubricated by oil
pumped from the hook saddle reservoir while the ma-
chine is operating. The amount of oil received by
hook raceway is very important. To check this, first
remove bobbin case. Then with the machine running,
hold a small piece of white paper near the hook for
about 10 seconds. A distinct spray of oil should be
visible on the paper.
If there is no trace of oil or an excess of oil on
the paper, proceed with the following steps:
l. Tip machine and loosen control valve set screw
shown in Fig. 6 and return machine to upright
position.
2. Turn control valve screw shown in Fig. 7 clock-
wise for more oil; counterclockwise for less
oi I. Re-tighten control valve set screw.
A short test run of at least a minute should be
made between adjustments to insure uniform oi I flow.
After each adjustment of oil control valve screw, oil
control valve set screw should be securely tightened.
SPEED
Maximum speed for machine 21 lG 146 1s 3500
stitches per minute.
SPEED
Maximum speed for machines 211Gl51 and 211Gl57
is 4000 stitches per minute.
Maximum efficient speed 1s dependent upon the
nature of the operation, the obi lity of the operator
and the type of material being sewn.
Never run a new machine at maximum speed im-
mediately following a new installation. A speed of
500 stitches per minute less than maximum Is recom-
mended for the first 100 hours of operation.
NEEDLES
For machine 2l1Gl46, use Singer Needles, Catalog
1740.
For Machines 21 lG151 and 211Gl57, use Singer
Needles, Catalog 1901 for l/4 inch clearance under
presser foot and Catalog 3355 for 3/8 inch clearance.
Size of needle for a particular operation is deter-
mined by size of thread and type of material to be
sewn.
Orders for needles should state quantity required,
size number and catalog number.
For example:
100 Needles, Size 14, Catalog 1740
5

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
1ffS:\::·
"·
":
..
'·
·;J
.,
I
SETTING
THE
NEEDLE
l.
T~•-,
machine
pulley
over
toward
you
until
needle
bar
is
at
highest
position
as
shown
in
Fig.
8.
2.
Loosen
needle
clamping
screw
3.
Insert
needle
into
needle
bar
to
highest
posi-
tion,
with
long
groove
of
needle
to
left
of
opera-
tor
and
eye
of
needle
parallel
to
machine
arm.
4.
Tighten
clamping
screw.
THREAD
Left
twist
thread
should
be
used
in
needle.
Either
left
or
right
twist
thread
can
be
used
1n
bobbin.
To
determine
thread
twist,
hold
thread
as
shown
in
Fig.
9.
With
left
hand
holding
one
end
of
thread,
twirl
other
end
with
thumb
and
forefinger
of
right
hand
over
toward
you.
If
left
twist
thread,
strands
will
wind
tighter.
If
right
twist
thread,
strands
will
unwind
or
separate.
UPPER THREADING
Turn
machine
pulley
over
toward
you
until
needle
bar
is
at
highest
position.
Pass
thread
through
threading
points
as
indicated
in
Fig.
10.
Draw
about
2
inches
of
thread
through
needle
eye
to
start
sewing.
BEHIND OIL PAD
Fig.
10.
Upper
Threading
6

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
LOWER THREADING
BOBBIN REMOVAL
1. Open slide plate in bed of machine
2. Turn machine pulley over toward you until needle
bar reaches highest position.
3. Roi se bobbin latch and I ift out bobbin as in-
dicated in Fig. 11.
BOBBIN WINDING
Attach bobbin winder to table with driving pulley
in front of belt as shown in Fig. 12.
Securely place bobbin on bobbin winder spindle.
Pass thread through thread guide, then around and
between tension discs as shown. Wind thread clock-
wise around bobbin a few times as indicated in Fig.
12.
Move bobbin winder pulley over against machine
belt and start machine.
The amount of thread to be wound on bobbin is
regulated by screw B, Fig. 12. To wind more thread
on bobbin, turn screw B inward. For less thread on
bobbin, turn screw B outward. This screw should be
regulated to stop bobbin winder spindle when thread
on bobbin is 1/16 inch short of bobbin rim.
If thread winds unevenly on bobbin, loosen tension
bracket screw A, Fig. 12, and move bracket to right
or left to obtain even winding.
Adjusting knurled nut C, Fig. 12, regulates tension
of thread being wound on bobbin. For fine thread,
use light tension.
Bobbins may be wound while machine 1s stitching.
BOBBIN REPLACEMENT
Place bobbin on center stud with thread wound in
counterclockwise direction as shown in Fig. 13. Draw
about 2 or 3 inches of thread from bobbin.
LIFT LATCH_,:;;:<;- .::\,'1
·, · ;tfil!:ir]1J
'-~~~;,:!:;-:=:~:
. :t~d/J~)it"'}
J,'.;\'.;,,(Jl·;'.;;; 1!111 .....
.,
7

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
i
l THREADING
BOBBIN
CASE
Draw
thread
through
slot
in
edge
oi
bobbin
case
as
shown
in
Fig.
14,
then
to
the
left
and
under
pro-
jection
as
shown
in
Fig.
15,
leaving
about
two
inches
8
PULL
THREAD
THROUGH
SLOT
Fig. 14. Bobbin
Threading
(Step One)
of threaci
above
the
slide
to
start
sewing.
Close
slide,
leaving
just
enough
space
for
thread
to
pass
freely.
DRAW
THREAD
TO
LEFT
AND
UNDER
PROJECTION
,_
'
DRAW
THREAD
UP
AND
OUT
TWO
INCHES
Fig. 15. Bobbin Threading (Step Two)
THREAD TENSIONS
Tension
on
thread
should
be
as
light
as
possible
yet
sufficient
to
correctly
set
stitches
in
material.
NEEDLE THREAD TENSION
Regulate
need
le
thread
tens
ion
only
when
presser
foot
is
down.
To
increase
tension,
turn
tbumb
nut
shown in
Fig.
16,
clockwise.
To
decrease
tension
turn
this
thumb
nut
counterclockwise.
BOBBIN
THREAD
TENSION
Bobbin
thread
tension
is
regulated
by
the
screw
nearest
to
the
center
of
tension
spring
on
the
outside
of
the
bobbin
case
shown
in
Fig.
17.
Turn
machine
pulley
slowly
until
screw
is
accessible.
To
increase
tension,
turn
screw
inward.
To
decrease
tension,
turn
screw
outward.
THREAD
CONTROLLER
The
thread
controller
should
draw
up
slack
thread
before
needle
point
enters
fabric_
to
prevent
needle
from
penetrating
thread.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
To
adjust
thread
controller,
loosen
oet
screws
A
and
B,
shown
in
Fig.
18.
Turn
thresa
controller
spring
stop
counterclockwise
for
more
control
I
er
action
on
thread
or
clockwise
for
less
action.
Tighten
set
screws
A
and
B.
Thread
controller
action
TENSION
should
be
in-
creased
for
heavy
thread
and
decreased
for
I
ight
thread.
To
adjust
thread
controller
action
tension,
loosen
set
screws
B
and
C
shown
in
Fig.
18.
Turn
tension
stud
slightly
counterclockwise
for
more
tension
or
clockwise
for
less
tension.
Tighten
set
screws
Band
C.
STITCH LENGTH REGULATION
l.
With
machine
OFF,
depress
button
shown
in
Fig.
19
on
bed
surface.
NEVER
DEPRESS
BUTTON
WHEN
MACHINE
IS
ON.
2.
Turn
machine
pulley
over
toward
you
slowly
until
button
drops
(snaps)
into
position.
3.
Turn
machine pulley
in
direction (
+)
when a longer
stitch
is
desired (less
SPI)
and
in
direction
(-)
when a
shcrter stitch
1s
desired (more
SPI)
4.
Release
button.
NEVER
START
MACHINE
UN-
TIL
BUTTON
IS
REL
EASED.
Fig.
19.
Stitch
Length
Button
Regulator
PRESSURE
ON
MATERIAL
Pressure
of
roller
presser
or
presser
foot
on ma-
terial
should
be
as
light
as
possible
while
being
sufficient
to
insure
correct
feeding.
Pressure
is
regulated
by
screw
shown
in
Fig.
20
at
rear
of
machine
arm.
Turn
screw
downward
to
in-
crease
pressure
or
upward
to
decrease
pressure.
9

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
10
UPPER
TIMING
MARK
~•.·~----
•rJ~~-~·:;~}P·-r--•-
•T•-
-~-•·
"~_·:.:
'.
SET
SCREW
STUD
PINCH
SCREW
Fig.
23.
Needle
Bar
Adjustment
I
ADJUSTMENTS
SETTING
LOWER
NEEDLE
BAR
BUSHING (211G146)
The
correct
gauge
di
stance
from
throat
plate
seat
to
bottom
of
needle
bar
bushing
is
2.738
inches,
as
indicated
in
Fig.
21.
To
odjust
needle
bar
bushing,
loosen
bushing
set
screw
shown
in
Fig.
21
and
set
bushing
at
correct
distance
from
throat
plate
seat.
Re-tighten
bushing
set
screw.
SETTING
NEEDLE
BAR
HEIGHT
(211G146)
Remove
face
plate,
slide
plate
and
throat
plate.
When
needle
bar
is
at
lowest
position
of
its
cycle,
the
correct
gauge
di
stance
from
throat
plate
seat
to
needle
stop
in
needle
bar
is
.984
inches,
as
indicated
1n
Fig.
22.
Needle
bar
is
correctly
set
when,
at
the
lowest
position
of
its
cycle,
the
upper
timing
mark
is
level
with
bottom
edge
of
needle
bar
bushing.
If
needle
bar
is
not
correctly
set,
loosen
needle
bar
clamping
screw
shown
in
Fig.
22
and
correct
needle
bar
position.
Re-tighten
needle
bar
clamping
screw.
SETTING
NEEDLE
BAR (211G151 AND 211G157)
When
needle
bar
is
at
lowest
position
of
its
cycle,
the
correct
gauge
di
stance
from
throat
plate
seat
to
needle
stop
in
needle
bar
is
.973
inches,
as
indicated
in
Fig.
23.
Needle
bar
is
correctly
set
when,
at
the
lowest
position
of
its
cycle,
the
upper
timing
mark
is
just
visible
at
lower
edge
of
needle
bar
frame
as
shown
in
Fig.
23.
If
needle
bar
is
not
correctly
set,
loosen
needle
bar
connecting
stud
pinch
screw
shown
in
Fig.
23
and
correct
needle
bar
position.
Re-tighten
needle
bar
connecting
stud
pinch
screw.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
DISTANCE
OF
NEEDLE
BAR
FROM
PRESSER
BAR
(211Gl51
AND211Gl57)
The
distance
between
needle
bar
and
presser
bar
(after
regulating
stitch
length
so
that
there
is
no
feed
movement)
should
be
17
/32
inch
as
shown
in
Fig.
24.
If
the
di
stance
between
need
Ie
bar
and
presser
bar
is
more
or
less
than
17
/32
inch,
first
turn
ma-
chine
pu
II
ey
over
toward
you
unt
iI
need
Ie
bar
is
at
highest
position.
Remove
cover
plate
from
front
of
machine
arm
after
removing
screw
(directly
behind
cover
plate)
in
rear
of
machine.
Loosen
needle
bar
frame
clamp
screw
shown
in
Fig.
25.
Move
needle
bar
frame
forward
or
backward
to
correct
its
position.
Re-tighten
clamp
screw.
Distance between needle bar and presser bar should
be
37
/64"
(14.68 mm)
in
the case of
211
G 158 machines.
REVERSE
FEED
MECHANISM
(211Gl57)
To
reverse
feed
direction
by
hand,
push
reverse
lever
completely
down
in
order
to
have
same
stitch
length
as
in
forward
stitching
position.
To
reverse
the
feed
with
foot
treadle,
the
foot
treadle
chain
should
be
connected
to
hole
in
reverse
feed
lever
shown
in
Fig.
26.
Release
hand
lever
or
foot
treadle
only
when
you
wish
to
resume
forward
stitching.
ADJUSTING
FEED
REVERSING
MECHANISM
Adjust
stitch
length
to
5
stitches
per
inch.
Loosen
screw
A
and
adjust
crank
shown
in
Fig.
26
so
that
needle
will
penetrate
fabric
5
times
in
each
inch
of
stitching.
When
you
depress
the
reversing
lever,
the
eccentric
head
of
the
bearing
pin
B
should
rest
a-
gainst
the
bearing
block.
Loosen
set
screws
C
and
turn
bearing
pin
B
unti
I
the
stitch
length
is
the
same
in
reverse
feed
as
in
forward
feed.
Tighten
all
screws.
211G158 only
The maximum stitch length
of
approx.
10
mm
is
being
limited by the
Feed
Reversing Shaft Crank Hinge Stud Stop
.A",Fig26A.
In
reverse feed the stitch length
is
only approx.
1/3 of the forward feed stitch length.
17/32"
(13,49
mm)
of
211
G
158
machines
Fig.
24,
Distance
Between
Needle
Bar
and
Presser
Bar
Fig.
26
A
11

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
:
~~
·-:'.
-.-
.
.c_
,
.•
, -
J
;}~'.:,:
'
;:
;;;;
:~.
~
~
,•
K
.,;:_-~~~-~~::
~:~
~f
,;;;/,,~.
,,~·
I
~,~J
'1f
•.:
,-:
_
__,
____
_,.
,
___
....,.
,·,1
t;,.,)~
:ii):\
1
,.i
HOOK
GIB
NEEDLE
GUARD
·~i:.t:J-i.~);}r·~fJ
:~';;;Jfl
..
~.
~:~1~
:\~!i/~~~~:~:;~,;
.?BOBBIN CASE
~
'TOP,~!~El~)
'
,-
-...
.,,'>
"'
,..,_tr=-'Jl.
';l,O~.f
..
...i
;~:;
·-~::..~
HOOK
HEIGHT
ADJUSTING
SCREW
HOOK
HUB
SOCKET
SCREWS
Fig.
28.
Sewing
Hook
Height
Adjustment
(Step
Two)
12
ADJUSTMENT
OF
SEWING HOOK
HEIGHT
When
lower
timing
mark
on
needle
bar
is
just
visible
at
lower
end
of
needle
bar
frame
on
upward
stroke
of
needle,
the
hook
should
pass
about
1/16
inch
above
upper
edge
of
needle
eye
as
shown
in
Fig.
27.
To
adjust
height
of
sewing
hook,
first
fasten
throat
pI
ate
to
bed
of
machine
and
pl
ace
bobbin
case
stop
finger
in
sewing
position.
Pass
a
.032
inch
shim
between
bobbin
case
stop
finger
and
throat
plate.
If
shim
is
too
tight
or
too
loose,
turn
machine
pulley
over
toward
you
so
that
the
hook
hub
socket
screws
shown
in
Fig.
28
are
accessible
with
a
socket
wrench,
Loosen
both
screws
and
remove
cloth
washer
from
bobbin
case.
Turn
bobbin
case
until
one
of
the
holes
is
in
line
with
hook
height
adjusting
screw.
To
raise
hook,
turn
hook
height
adjusting
screw
downward.
To
lower
hook,
turn
hook
height
adjusting
screw
up.
Re-
tighten
socket
screws
and
turn
hook
height
adjusting
screw
again
just
enough
to
leave
a
light
tension.
Check
sewing
hook
timing.
ADJUSTMENT
OF
DISTANCE
BETWEEN
SEWING
HOOK
AND
NEEDLE
To
prevent
hook
point
from
dividing
strands
of
thread,
it
should
pass
as
near
to
the
needle
as
pos-
sible
without
hitting
it.
Turn
machine
pulley
over
toward
you
until
sewing
hook
point
is
in
the
position
nearest
to
needle.
Tip
machine
and
loosen
hook
saddle
screws
shown
in
Fig.
29.
Adjust
hook
saddle
until
hook
point
is
as
close
to
needle
as
possible
without
hitting
it.
Re-
tighten
hook
saddle
screws
BE
SURE
HOOK
DRIVING
GEARS
SHOWN
IN
FIG.
29
ARE
CORRECTLY
SET
WITH
RELATION
TO
FACE
OF
HOOK
SADDLE.
USE
.008
INCH SHIM.
The
function
of
the
needle
guard
shown
in
Fig.
28
is
to
prevent
hook
point
from
striking
needle,
if
needle
is
deflected
after
penetrating
material.
The
needle
guard
can
be
bent
with
a
pair
of
pliers,
if
necessary,
but
care
should
be
taken
to
prevent
guard
from
inter-
fering
with
normal
path
of
needle.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Hook Height
(Fig.
A)
211
G
351,
357, 358
The
height adjustment
of
the hook serves
tc
~::nieve
the
proper clearance
O
between the throat : ate and
the bobbin case stop.
Adjustment
(Figs.
A and
B)
1.
Loosen and remove hook
as
instructed
on
page
14a.
2.
Adjust hook height by adding or removing washers
0 .
(Four washers can be added at the most!)
3.
Replace
an
fasten hook
as
instructed on page14a.
4.
Check hook height
in
compliance with
Fig
A threrby
ensuring that the throat plate
1s
properly seated.
Fig.
A
Clearance· 0.032"
Zwrschenraum 0,8 mm
Fig.
B
211
G,
351,
357, 358
12a

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TIMING THE
SEWING
HOOK
Regulate
stitch
length
so
that
there
is
no
feeding
motion.
Remove
throat
plate
and
turn
machine
pulley
over
toward
you
until
lower
timing
mark
on
needle
bar
is
just
visible
at
lower
edge
of
needle
bar
frame
on
up-
ward
stroke
of
needle.
With
needle
in
this
position,
sewing
hook
is
correctly
timed
if
hook
point
is
at
vertical
centerline
of
needle
blade.
If
sewing
hook
is
not
correctly
timed,
loosen
socket
screws
shown
in
Fig.
30
and
turn
to
proper
timing
position
specified
above.
REMOVING BOBBIN
CASE
FROM
SEWING
HOOK
Remove
hook
gib
screws,
indicated
in
Fig.
3l(a),
from
sewing
hook.
Lift
off
hook
gib
and
remove
bobbin
case.
REMOVING
SEWING
HOOK
FROM
MACHINE
Remove
presser
foot,
throat
plate
and
feed
dog.
Loosen
hook
hub
socket
screws
shown
in
Fig.
32.
Lift
hook
off
end
of
shaft.
To
remove
hook
shaft,
first
remove
ball
bearing
retaining
cap
screws
directly
under
hook
shown
in
Fig.
31(6).
Tip
machine
back
and
loosen
hook
shaft
gear
hub
socket
screws
shown
in
fig.
30.
Lift
out
shaft
from
top
end.
If
shaft
does
not
lift
out
easily,
loosen
screws
in
cover
plate
of
hook
saddle
just
enough,
at
first,
to
permit
the
oil
to
drain
out.
Then
remove
cover
plate
completely,
being
careful
not
to
damage
the
gasket.
Tap
the
end
of
hook
shaft.
-
~-~~
.,.:fi
,.~~~-r-:-~~_;·.~~
1
;r;~~~~~~~::.-t=1
:f
:_iL.,/,;:;
BOBBIN,CASE
,·
:
HOOK
GIB
HOOK
HUB
SOCKET
SCREWS
,,
" i
:;,;"
/~t,~t,i~i
Fig.
32.
Bobbin
Case
Removal
13

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
I.
14
BOBBIN
CASE
STOP FINGER
I~-"·,
~
....
,
'.,:·~_r:~~?y:
REPLACING
SEWING
HOOK
CAUTION:
The
hook
is
equipped
with
o
screw
in
the
hub
for
adjusting
the
vertical
position
of
the
hook
relative
to
the
throat
plate
seat.
This
position
is
set
with
a
gauge
at
the
factory.
WHEN
REPLACING
A
HOOK,
CARE
MUST
BE
TAKEN
TO
SEE
THAT
THE
BOBBIN
CASE
STOP
FINGER,
SHOWN
IN
FIG.
33,
FITS
CORRECTLY
IN
THE
THROAT
PLATE.
For
correct
adjustment,
see
instructions
concerning
hook
height
adjustment
on
page
12.
ADJUSTING BOBBIN
CASE
OPENER
The
bobbin
case
opener,
shown
in
Fig.
33,
should
be
set
so
that
it
touches
the
bobbin
case
as
I
ightly
as
possible
and
turns
the
bobbin
case
enough
to
make
o
sufficient
o:--ening for
t!-ie
free
passage
of
thread
between
throat
plate
and
bobbin
case.
TIMING BOBBIN
CASE
OPENER
Turn
machine
pulley
over
toward
you
until
lower
timing
mark
on
needle
bar
is
even
with
edge
of
needle
bar
frame
on
upward
stroke
of
needle.
When
needle
bar
is
in
this
position,
reference
mark
A
should
line
up
with
reference
mark
B on
hook
saddle,
as
indicated
in
Fig.
33.
If
opener
shaft
is
out
of
ti
me,
tip
moch
ine
back
and
loosen
socket
screws
shown
in
Fig.
34.
Return
machine
to
upright
position
and
turn
opener
driving
shaft
with
screw
driver
in
cap
screw
shown
in
Fig.
33.
Tighten
socket
screws
in
opener
driving
gear
hub.

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Hook Fig. A (211 G 351. 357. 358)
Removal
l Remove presser feet. throat plate and fe-?::: dog.
2. Remove bobbin case and bobbin.
3. Turn out screws O and remove hook gib 8 .
4. Remove bobbin case base E) from hook O .
5. Turn out screw 0 .
6. Remove hook O with needle guard 0 from machine.
Replacement
1. Check proper seat of disc O on the hook shaft Q .
2. Fasten needle guard 0 on the hook by placing its
stop C0 into the appropriate hole of the hook O .
3. Place needle guard 0 together with hook O onto
the hook shaft 0 so that the pin 0
is seated in
the appropriate hole of the hook.
4. Tighten screw 0 .
5. Place bobbin case base into hook O .
6. Replace hook gib and fasten with screws O .
7. Replace bobbin case and bobbin.
8. Replace feed dog. throat plate and presser feet.
Fig. A
14a

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
FEED DOG ADJUSTMENT
Before adj us ting feed dog, regu I ate stitch I ength
for longest stitch. If feed dog is correctly adjusted,
all teeth should rise evenly and completely above
throat plate as shown in Fig. 35.
If adjustment is required, first remove throat plate,
then tip machine back and turn machine pulley over
toward you until feed dog is at its highest position.
Loosen fork screw shown in Fig. 36 and raise or lower
feed dog to correct position. Re-tighten fork screw.
When adjusting feed dog, make certain it does not
strike sewing hook.
Feed dog should be set so that when needle is at
lowest position of cycle, it will be slightly in front
of center point of needle hole in feed dog. If needle
is not correctly located in needle hole, tip machine
back to loosen pinch screws shown in Fig. _ __36 and
adjust feed dog to correct position. After securely
re-tightening pinch screws, check for correct positions
of needle bar and presser bar.
FEED ECCENTRIC ADJUSTMENT
The feed eccentric is provided with a gib which
can be adjusted to take up unnecessary play between
feed eccentric and eccentric body. To adjust gib,
first loosen two locking screws beside gib and turn in
two adjusting screws in gib until all play is eliminated
and eccentric fits snugly into slot of eccentric body.
Securely tighten two locking screws.
The feed driving eccentric adjusting disc spring
provides pressure against feed eccentric cam to pre-
vent it from moving out of position while the machine
is operating. The disc spring collar may be moved to
right or left to adjust spring pressure. Normally, col-
lar is set flush with hub of eccentric body.
THROAT
PLATE
FEED
DOG
Fig. 35. Feed Dog and Throat Plate
15

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
TAKE-UP LEVER
SET SCREW
/
A
GUARD
COVER PLATE
B
ARM SHAFT
CONNECTION
BELT PULLEY
Fig. 38. Take-up Lever Removal
REMOVAL OF TAKE-UP LEVER
Remove arm top cover and face plate. Loosen
take-up lever hinge stud set screw shown in Fig. 38.
Rernove toke-up lever hinge stud and take-up guard.
Lift take-up lever out through slot A in top of arm
shown in Fig. 38.
16
REMOVAL OF NEEDLE BAR ROCK FRAME
Remove face plate and arm top cover. Loosen
take-up lever hinge stud set screw shown in Fig. 38.
Extract take-up lever hinge stud, take-up guard and
take-up lever. Remove cover from front of machine
arm after removing a screw (directly behind cover
plate) in rear of machine. Loosen needle bar frame
shaft cla,11p screw ~hawn in Fig. 39. Pull needle bar
rock frame with its shaft from machine.
REPLACEMENT OF ARM SHAFT
CONNECTION BELT
Remove needle, to avoid damage, before proceeding
to replace belt. Tip machine and slide belt off lower
pulley shown in Fig. 40. Loosen two set screws in
machine pulley and remove pulley and ball bearing.
Li ft be It up and draw it around arm shaft through
space at B indicated in Fig. 38.
Replace belt through ball bearing space at B. After
placing belt over arm shaft connection belt pulley,
replace machine pulley with ball bearing. To remove
all end play from shaft, tighten set screws in ma-
chine pulley and (holding needle bar crank in place)
tap machine pulley into position with palm of hand.
Tighten machine pulley set screws.
Turn machine pulley over toward you until thread
take-up lever is at its highest position. Then turo
hook driving shaft until the setting mark A on safety
clutch is in line with setting mark B cut into machine
bed as shown in Fig. 40. With both arm sh aft and
hook driving shaft in position, slip belt over lower
pulley. This procedure should correctly time sewing
hook with needle. Check timing as indicated on page
13.