SINGER 211G 146, 151, 157, 158, 351, 357, 358, 451, 457, 651, 657, 658 sewing machine Service Manual

Below you will find brief product information for sewing machine 211G 146, sewing machine 211G 151, sewing machine 211G 157, sewing machine 211G 158, sewing machine 211G 351, sewing machine 211G 357, sewing machine 211G 358, sewing machine 211G 451, sewing machine 211G 457, sewing machine 211G 651, sewing machine 211G 657, sewing machine 211G 658. These are high-speed, single-needle machines designed for a variety of fabrics. They feature a vertical axis hook with metered lubrication, a safety clutch, and an adjustable feed driving eccentric.
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SINGER
211G146, 211G151, AND 211157,
158, 351, 357, 358, 451, 457, 651, 658
Form 30-289 G/1073-894
I,
SINGER
Service Manual
MACHINES
211G146, 211G151 AND 211G157,
158, 351, 357, 358, 451, 457, 651, 657, 658
THE SINGER COMPANY
Copyright &copy; 1965 by The Singer Company
Copyright under International Copyright Union
All Rights Reserved under Inter-American Copyright Union
Printed in West Germany
* A Trademark of THE SINGER COMPANY
CONTENTS
DESCRIPTION......... o2enoorervaoredoocrerarcoo 3
INSTALLATION. LL. 112611 ee a a a a ane ae aa a aa aa a 0 4
LUBRICATION 11212104 La aa ae aa a a a aan aa&raquo; 4-5
ОРЕВАТОК |МЕОВМАТЮМ. ................... 5-9
ADJUSTMENTS. Re 9-16
INDEX
Arm Shaft Connection Belt Replacement. ........... 16 Installation. ori ii ie eee чо,
Bobbin Case Opener, Adjusting.........eerecoon. 14 Lubrication.......ee..ceesoserec.ecenocareaecao
Bobbin Case Opener, Timing.......eeoresocccer. 14 Needles... RR RER ee
Bobbin Case, Removal From Sewing Hook......... 13 Needle Bar Bushing (211G146)............eeec...
Bobbin Removal.......oeroooorneocacororrensooarr aa 7 Nedle Bar Height (211G146)..............eene...
Bobbin Replacement... cirri 7 Needle Bar Height (211G151 &amp; 211G157).......... 10
Bobbin Thread Tension.......0eeeeesrecorerecomerco 8 Needie Bar Position Relative to Presser Bar...... 10
Bobbin Winding........enencacoorerererecarerer. 7 Needle Bar Rock Frame Removal...........ee. 16
Description of Machines .......o_eeorerorarcerare.. 3 Needle Setting. .........eccoreocarerereenecor e 6
Feed Dog Adjustment. .......eeeececroroonerecoe. 15 Needle Thread Tension. ......ecrencoacrecca aro 8
Feed Eccentric Adjustment... ovine... 15 Pressure on Material .........eeor.eccdoocoreree.. 9
Feed Reversing Mechanism (211G157).......eee... 11 5111-10 eae 5
Feed Reversing Mechanism Stitch Length Regulation sera 9
Adjustment (211G157/158) 0..0.00000000000 0070 11 Take-up Lever Remove 16
Hook Height.....0.0.00000000000 0000110 12 Thread Controller. co. oi iii iii ieee 8, 9
Hook Lubrication....120201000 0000000400 000000 0000 5 Thread Tensions.......eoececooecacareooocononoeo 8
Hook Position Relative to Needie..........reoneoo 12 Threading Bobbin Case........&ntilde;ecoeeooororevaror. 8
Hook Removal......oeerocaosorero encororroo „13, 14 Threading (Lower)........eoreoccsercorererrecen. 7
Hook Timing......-eoccossrerarecrerrocarearene. 13 Threading (Upper).........oceoccacecoorerarore 6
DESCRIPTION OF MACHINES
—
The Singer 211G146, 211G151 and 211G157 are high speed, single needle,
long arm, precision lockstitch 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 in hook saddle permits controlled
lubrication to bobbin case, bobbin case opener mech-
anism and hook,
Arm shaft, hook shaft, and belt driven bed shaft
are mounted in ball bearings at rear and in automat-
ically lubricated plain bearings in front.
Plunger for changing length of stitch is on top
surface of bed.
Needle bar and needle bar driving mechanism are
lubricated automatically from oil reservoir in machine
arm.
Sleeve type take-up.
Thread take-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
211G146 DROP FEED
Primarily for shoes and a variety of leather products.
Ball bearing roller presser.
Clearance under roller presser: 1,4 inch.
Maximum stitch length: 6 per inch.
211G151 COMPOUND FEED
Ideal for stitching coats, overalls, rainwear, work-
clothes, sports outerwear and similar items.
Combination of needle feed and drop feed prevents
slipping 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.
211G157 COMPOUND FEED/REVERSE FEED
Similar to machine 211G151 with addition of feed re-
versing mechanism controlled by hand or foot. Direc-
tion of feed can 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 rom.
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. 2% SPI = 10 mm 1.800 RPM
211 G 451 Underbed Thread Trimmer with Thread Wiper.
Ai 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 SPI = 4.2 mm 4,000 RPM
211 G 651 Large Vertical Axis Hook; Underbed Thread Trimmer with Wiper.
Al! 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
211 G 658 Large Vertical Axis Hook: Underbed Thread Trimmer with Wiper. _
All other features comply with 211 G 158 machine.* 27 SPI = 10 mm 1.800 RPM
For machines with UTT, Service Manual Form No. 30-349G should be used as supplementary literature.
&quot; 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.
STOP
DRAIN STUD а
PIPE r———— WN 4
Fig. 2. Installation View
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 lever. Screw drain pipe
‘nto drain hole in drip pan and attach oil jar as shown.
LUBRICATION
vam A TA TEA TSE EE TT : A a UIT a A CARTE TETE TE a не TT
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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
“TYPEE'— FH
ON———
WHEN MACHINE Ju.
IS RUNNING
OFF
WHEN MACHINE
IS IDLE
FOR MORE LUBRICATING
THREAD LUBRICANT PAD
Fig. 5. Thread Lubrication
&quot;BEFORE STARTING MACHINE
55 FALL TO HIGH MARK +: a
ABLA
+ ak aad
ed
4
WF
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1.
SL SATUR
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Use Singer Oil ‘Type A’ ог ‘Туре 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&quot; for thread lubricator
reservoir. Fill thread lubricator reservoir through oil
hole in face plate as shown in Fig. 5. THREAD LU-
BRICATOR CONTROLLER MUST BE ON WHEN
MACHINE IS OPERATING AND OFF WHEN MACHINE
IS IDLE. To increase thread lubrication, turn con-
troller in counterclockwise direction as shown in
Fig. 5.
AA —
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PUY IPS aie PIAS SEE TTT FIRES Uy 2 a o. ATLAS ren ea Re Pa 0 В
&quot;o e A TA 1 - ва
CoE al SEL - -
ication (Step One) =~ 7&deg;
Hae aa D 008
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. &Agrave; 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:
1. Tip machine and loosen control valve set screw
shown in Fig. 6 and return machine to upright
position.
2. Turn contro! valve screw shown in Fig. 7 clock-
wise for more oil; counterclockwise for less
oil. Re-tighten control valve set screw.
A short test run of at least a minute should be
made between adjustments to insure uniform oil flow.
After each adjustment of oil control valve screw, oil
control valve set screw should be securely tightened.
SPEED
Maximum speed for machine 211G146 is 3500
stitches per minute.
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Step Tw o) RET, a
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TEE: 7
—]—_ , Fa ld Mea CS E
Maximum speed for machines 211G151 and 211G157
is 4000 stitches per minute.
Maximum efficient speed is dependent upon the
nature of the operation, the ability 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 211G 146, use Singer Needies, Catalog
1740.
For Machines 211G151 and 211G157, use Singer
Needles, Catalog 1901 for 1/4 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
EEE TE SETTING THE NEEDLE
1. Turn machine pulley over toward you until
Ea needle bar is at highest position as shown in
Fig. 8.
‘LOOSEN { NEEDLE
SCHAMPING SC SCREW &copy; 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
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
TOA Fe | THRE ‹ e COPE
9. “Thread. Twict Determination 7 e
At de o PEARL NETA DEN TAS A AA unwind or separate.
UPPER THREADING
Turn machine pulley over toward you until needle in Fig. 10.
bar is at highest position.
Draw about 2 inches of thread through needle eye
Pass thread through threading points as indicated to start sewing.
BEHIND OIL
Threading Needle &agrave;
Fig. 10. Upper Threading
LOWER THREADING
BOBBIN REMOVAL
|. Open slide plate in bed of machine Во
2. Turn machine pulley over toward you until needle
bar reaches highest position. СЕ
3. Raise bobbin latch and lift out bobbin as in-
dicated in Fig. 11.
pan
BOBBIN WINDING = a” Vague Fi g.
- ae US noo a
ra e ост
a UNT E =
Attach bobbin winder to table with driving pulley
in front of belt as shown in Fig. 12.
TEL YA TTR &iquest;e о,
ET es TTR Lt
Saad; 4 x
ape er -_ &reg;
зо
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 is stitching.
BOBBIN REPLACEMENT
Place bobbin on center stud with thread wound in a Pone TERRE
Fig..]
sE
counterclockwise direction as shown in Fig. 13. Draw
about 2 or 3 inches of thread from bobbin.
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THREADING BOBBIN CASE
Draw thread through slot in edge of bobbin case
as shown in Fig. 14, then to the left and under pro-
jection as shown in Fig. 15, leaving about two inches
PULL THREAD
THROUGH SLOT
Fig. 14. Bobbin Threading (Step One)
not: 7 UE TA TE UAT van A DH a —
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of thread 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 needle thread tension only when presser
foot is down. To increase tension, turn thumb 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.
To adjust thread controller, |oosen set screws Ce E
A and B, shown in Fig. 18. Turn thread controller О, me a ip
spring stop counterclockwise for more controller | |
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 light thread. A
To adjust thread controller action tension, loosen
eM or Е
set screws B and C shown in Fig. 18. Turn tension
stud slightly counterclockwise for more tension or ON due
clockwise for less tension. Tighten set screws B and | в”
co a
мове
| € e - a Ш a CC. Svs sax ry m . EE
С. TL Ta A &aacute;s o E
Fis. 18, Thread Controller ‘Adjustment deny
TE RRR TE ee RDS 5e Ei
STITCH LENGTH REGULATION
1. With machine OFF, depress button shown in 3. Turn machine pulley in direction (+) when a longer
Fig. 19 on bed surface. NEVER DEPRESS stitch is desired {less SPI) and in direction (-) when a
BUTTON WHEN MACHINE IS ON. shorter stitch is desired (more SPI).
2. Turn machine pulley over toward you slowly 4. Release button. NEVER START MACHINE UN-
until button drops (snaps) into position. TIL BUTTON IS RELEASED.
BUTTON. Ned
2
TES, FEA pis
: ve VER
Ch
a
PRESSURE ONMATERIAL
rate
Pressure of roller presser or presser foot on ma-
Зет
terial should be as light as possible while being
sufficient to insure correct feeding.
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ESR
15 тм EDO MO
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Pressure is regulated by screw shown in Fig. 20
E +
LB
de
at rear of machine arm. Turn screw downward to in-
Ai
of
+
crease pressure or upward to decrease pressure.
19. 20&deg; Pressure Adis
‚ Era 28 5 = ia ; El E. Ea i eA
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; 4; — EN Ne
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ВЫ 11:2 22. Needle Bar Hei she Adjus tment CT
зы &gt; : TEA “E FEAT Fa SE E у er A - 4 y e = aed . 1
UPPER
TIMING
MARK
Fig. 23. Needie Bar Adjustment
10
ADJUSTMENTS
SETTING LOWER NEEDLE BAR BUSHING (211G 146)
The correct gauge distance from throat plate seat
to bottom of needle bar bushing is 2.738 inches,
as indicated in Fig. 21.
To adjust 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 distance from throat plate seat to
needle stop in needle bar is .984 inches, as indicated
in Fig. 22.
Needie 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 distance 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.
DISTANCE OF NEEDLE BAR FROM PRESSER BAR
(211G151 AND 211G157)
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 distance between needle bar and presser
bar is more or less than 17/32 inch, first turn ma-
chine pulley over toward you until needle 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&quot; (14,68 mm) in the case of 211 G 158 machines.
REVERSE FEED MECHANISM (211G157)
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 until 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&quot; Fig 26 Alin reverse feed the stitch length is only approx.
1/3 of the forward feed stitch length.
17/327 (13.49 mm)
— 37/64” (14,68 mm)
of 211 G 158 machines
Fig. 24. Distance Between Needle Bar and Presser Bar
- . NEEDLE BAR FRAME . on)
“SHAFT CLAMP SCREW &copy; =
VERSE LEVER EN ME EE
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HOOK GIB HOOK HEIGHT
ADJUSTING SCREW
HOOK HUB
SOCKET SCREWS
NEEDLE GUARD
Fig. 28. Sewing Hook Height Adjustment (Step Two)
12
ADJUSTMENT OF SEWING HOOK HEIGHT
When lower timing mark on needie bar is just
visible at lower end of needie 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 plate to bed of machine and place 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 strikingneedie, 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.
Hook Height (Fig. A) 211 G 351, 357 358
The height adjustment of the hook serves to achieve
the proper clearance @ between the throat plate and
the bobbin case stop.
Adjustment (Figs. A and B)
1. Loosen and remove hook as instructed on page 14s.
2. Adjust hook height by adding or removing washers
O . (Four washers can be added at the most!)
3. Replace an fasten hook as instructed on pagel4a.
4. Check hook height in compliance with Fig. A threrby
ensuring that the throat plate is properly seated.
Clearance- 0,032”
Zwischenraum 0.8 mm
Fig. Al
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211 G, 351, 357, 358
Fig. B
12a
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.
REMOYING BOBBIN CASE FROM SEWING HOOK
Remove hook gib screws, indicated in Fig. 31(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(b), 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.
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Fig. 32. Bobbin Case Removal
13
“BOBBIN CASE &copy; CAP |
STOP PNR SCREW
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Ces 33. Bobbin Cae Open ner er Adjustment
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REPLACING SEWING HOOK
CAUTION: The hook is equipped with a 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 lightly
as possible and turns the bobbin case enough to make
a sufficient orening for the 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 time, tip machine
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.
Hook Fig. A (211 G 351, 357, 358)
Removal
1. Remove presser feet, throat plate and feed dog.
2. Remove bobbin case and bobbin.
3. Turn out screws Q and remove hook gib € .
4. Remove bobbin case base O from hook @ .
5. Turn out screw &copy; .
6. Remove hook @ with needle guard O from machine.
Replacement
1.
2.
ONDA PH
Check proper seat of disc @ on the hook shaft @ .
Fasten needle guard @ on the hook by placing its
stop O into the appropriate hole of the hook @ .
Place needle guard @ together with hook @ onto
the hook shaft &copy; so that the pin &copy; is seated in
the appropriate hole of the hook.
Tighten screw @ .
Place bobbin case base into hook @ .
Replace hook gib and fasten with screws @ .
Replace bobbin case and bobbin.
Replace feed dog, throat plate and presser feet.
14a
SET SCREW
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TAKE-UP LEVER
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ARM SHAFT
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COVER PLATE
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.
Remove take-up lever hinge stud and take-up guard.
Lift take-up lever out through slot A in top of arm
shown in Fig. 38.
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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, tcke-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 clamp screw shown 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.
Lift belt 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 turg
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 shaft 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.
The Same!
To get replacements
that are the same
as parts in new
machines...
BUY PARTS AND
NEEDLES MADE BY SINGER
TO BE DOUBLY SURE...
of new machine performance, make sure that all
replacement parts and needles are identical to those
in new SINGER machines.
Look for the trademark
SINGER
O on every package or container
@ on the needle or numbered part
Needles in containers marked “For Singer Machines” are NOT made by SINGER.
TO ALL WHOM IT MAY CONCERN:
The improper placing or renewal of the Trademark “SINGER” or
any other of the Trademarks of The Singer Company (ail of which
are duly Registered Trademarks) on any machine that has been
repaired, rebuilt, reconditioned, or altered in any way whatsoever
outside a SINGER factory or an authorized SINGER agency is for- -
bidden.
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Key features

Vertical axis hook
Safety clutch
Adjustable feed driving eccentric
Automatic lubrication
High speed operation
Single needle
Long arm
Drop feed
Compound feed
Reverse feed (211G157, 211G158)
Frequently asked questions

The manual covers the SINGER 211G series, with variations such as 211G146 (drop feed), 211G151 (compound feed), 211G157 (compound/reverse feed), along with other models like 211G351, 211G451, and 211G651.
These machines feature a vertical axis hook with metered lubrication, a safety clutch, an adjustable feed driving eccentric, and automatic lubrication.
A drop feed machine is primarily designed for leather and thicker materials, while a compound feed machine combines needle feed and drop feed to handle multiple layers of fabric. The 211G146 is a drop feed machine, while the 211G151 is a compound feed machine.
The 211G157 and 211G158 machines have a reverse feed mechanism, which allows you to sew in both forward and reverse directions. The 211G158 also has a longer maximum stitch length capability.
For the 211G146 machine, you need to use SINGER needles from Catalog 1740. For the 211G151 and 211G157 machines, you can use needles from Catalog 1901 for 1/4 inch clearance or Catalog 3355 for 3/8 inch clearance.