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

 Service SINGER
Manual INDUSTRIAL PRODUCTS
146
151
157
158
351
357
358
451
457
651
657
658
Form 30-289 G/1073-894
Printed in West-Germany
USE SINGER os
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 leather 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
Form 30-289 G/1073-894
| SINGER
| Service Manual
£ MACHINES
a 211G146, 211G151 AND 211G157,
158, 351, 357, 358, 451, 457, 651, 657, 658
LA
scan
Le
NU
ES
EN
THE SINCER COMPANY
Copyright © 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.........ecenorccocooareraooceaoeo 3
INSTALLATION. ...e.e.ooncacocoooconerecacreoo 4
LUBRICATION. ..........oemse0ar0oarorrecoro 4-5
OPERATOR INFORMATION. ..e.eo..0coceoreorea. 5-9
ADJUSTMENT SS. iii ie ee ieee 00 9-16
INDEX
Arm Shaft Connection Belt Replacement. ........... 16 Installation. .......o on ccacorrecrraro an aaa eno 4
Bobbin Case Opener, Adjusting.........eeeexeee. 14 Lubrication. coin ii ei 4
Bobbin Case Opener, Timing.......eeoconcccrroo 14 Needles. oun eit teen. 5
Bobbin Case, Removal From Sewing Hook... ...... 13 Needle Bar Bushing (211G146)............eeoeea.. 10
Bobbin Removal.......i.eseoceocoosccoerace.rece. 7 Nedie Bar Height (211G 146) 000000000000 000000000 10
Bobbin Replacement... oie 7 Needle Bar Height (211G 1518 211G157).......... 10
Bobbin Thread Tension......eño_ceorcosoracorrace. 8 Needle Bar Position Relative to Presser Bar...... 10
Bobbin Winding.......oo recorcoarcorenn e nonre vna 7 Needle Bar Rock Frame Removal...........e oe... 16
Description of Machines ......._eoc.coreroecracae 3 Needle Setting. ........eeoocerccroreorr ene. 6
Feed Dog Adjustment..........eereerecverecioce. 15 Needle Thread Тепяюп......... 2... 2..2... ....... 8
Feed Eccentric Adjustment.....0.000000000 0000000 15 Pressure on Material ......._eeereeceracocreeno.. 9
Feed Reversing Mechanism (211G157)........e.... 11 SEE 5
Feed Reversing Mechanism Stitch Length Regulation... iii iin... 9
Adjustment (2116 157/158) .......e.eeosverros. 11 Take-up Lever RemovaAl ee viii icine... 16
Hook Height.....0000000000 00000000000 EEG 12 Thread Controller. vo ov iii iii ie ieee. 8, 9
Hook Lubrication....202024200 00000 000 000 000000 0000 5 Thread Tensions......oeeeooe.o..aaresaacorcecarora 8
Hook Position Relative to Needle.......coceoaerreco 12 Threading Bobbin Case........erecoocorecareceao 8
Hook Removal......oecaccaareeos ercorecos . 13, 14 Threading (Lower).........eoorreocrecrrrorcanene, 7
Hook Timing......eeooocersacarerarererrarm re. 13 Threading (Upper).........e.eqocsococorecerderera. 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
siioping 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) 15 1800 rpm.
The 211 G 351; 211 G 357; 211 G 358; 211 G 451: 211 С 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 SP! = 42 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.
All other features comply with 211 G 151 machine.* 5 SP! = 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| = 42 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 SP! = 4.2 mm 2,700 RPM
211 G 658 Large Vertical Axis Hook; Underbed Thread Trimmer with Wiper. i
All other features comply with 211 G 158 machine * 2% 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 needie thread lubrication.
The lubricating pad has to be soaked manually if needle thread is to be lubricated.
dE SAIS
STOP
DRAIN STUD =
PIPE N
/ .
/
pe DN
OIL | e LIFTER!
JAR - ROD
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
into drain hole in drip pan and attach oil jar as shown.
LUBRICATION
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Le, - - - mo О A
BEFORE STARTING MACHINE
FILL TO HIGH au
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“3 Arm m Reservoir 2225
ESS re
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'— VE
REL
WHEN MACHINE
IS RUNNING
OFF
WHEN MACHINE
IS IDLE
FOR MORE LUBRICATING
THREAD LUBRICANT PAD
Fig. 5. Thread Lubrication
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ed wr i er
AA EE
Use Singer Oil “Type A'' or “Type С'' 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-
+ " . 1 +
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 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 1S OPERATING AND OFF WHEN MACHINE
IS IDLE. To increase thread lubrication, turn con-
troller in counterclockwise direction as shown in
Fig. 5.
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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.
| there is no trace of oil or an excess of oil an
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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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. À speed of
500 stitches per minute less than maximum is recom-
mended for the first 100 hours of operation.
NEEDLES
For machine 211G146, use Singer Needles, 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
Cees р ср SETTING THE NEEDLE
l. Turn machine pulley over toward you until
= needle bar is at highest position as shown in
В Fig. 8.
eme SCREW - 2. Loosen needle clamping screw
INSERT NEEDLES As 3. Insert needle into needle bar to highest posi-
SA FAR POSSIBLE AND tion, with long groove of needle to left of opera-
ZEOLTIGHTEN SCREW ' tor and eye of needle parallel to machine arm.
FRE ETE Lo Te 0
dle Setting - 4. Tighten clamping screw.
THREAD
Left twist thread should be used in needle.
: =< < Either left or right twist thread can be used
E A ai bobbin.
i + ; $ " GEN : |
Eos px € To determine thread twist, hold thread as shown
Y WAR in Fig. 9. With left hand holding one end of thread,
NS US: twirl other end with thumb and forefinger of right
CEA o NE hand over toward you. If left twist thread, strands
CAME Fig, 9.5 read. Twist Determination ны will wind tighter. If right twist thread, strands will
2 Cia a TH RR CR RR RT de ian Eas a Tr 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.
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Threading Needle
Fig. 10. Upper Threading
LOWER THREADING | o e
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BOBBIN REMOVAL
1. Open slide plate in bed of machine
2. Turn machine pulleyover toward you until needle
bar reaches highest position.
3. Raise bobbin latch and lift out bobbin as in-
dicated in Fig. 11.
HF
BOBBIN WINDING 1.
Attach bobbin winder to table with driving pulley
in front of belt as shown in Fig. 12. ERIE GUAR e NA:
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
y bobbin, turn screw B outward. This screw should be
Е. 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
В bracket screw A, Fig. 12, and move bracket to right
a or left to obtain even winding.
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Adjusting knurled nut C, Fig. 12, regulates tension
of thread being wound on bobbin. For fine thread,
use light tension.
54 Bobbins may be wound while machine is stitching.
BOBBIN REPLACEMENT
Ш Place bobbin on center stud with thread wound in Bi
8 in on cen Nahe E PEA AO
FS counterclockwise direction as shown in Fig. 13. Draw wer Gh Fig. 137 Bobbin Replac
EE about 2 or 3 inches of thread from bobbin. EDS TA LEE AT TUE NA
a
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THREADING BOBBIN CASE
Draw thread through siot 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)
TUTTI rT TEST
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“Fig obbin Thr
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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 drow up slack thread
before needle point enters fabric. to prevent needle
from penetrating thread.
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В T° Sor ) RE LR Teo
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To adjust thread controller, loosen set screws
A and B, shown in Fig. 18. Turn threca controller
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.
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 B and
С.
= A
7 ne & ent
TENSION STUD a,
зол
5 5 - a
NT Gp EATING ey .
A AE AE à
Fig. 18, Thread ‚Controller Adi ustment Ei
Ta Ea AA
STITCH LENGTH REGULATION
1. 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.
PRESSURE ONMATERIAL
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.
3. Turn machine pulley in direction (+) when a longer
stitch 1s desired {less SP!) and in direction (-) when a
shorter stitch 1s desired (more SPI),
4. Release button. NEVER START MACHINE UN-
TIL BUTTON ISRELEASED.
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Fig.’ 21. Needle Bar E Bushing Adjustment
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Lit = - + ‚
4 Fig. 22. ar Height Adjesimens ;
Ш - Vv LT EL + / =
Fer a a se AURAS IO RE set ms e | en `
UPPER
TIMING
MARK
Fig. 23. Needle Bar Adjustment
ADJUSTMENTS
SETTING LOWER NEEDLE BAR BUSHING (211G146)
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.
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 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" (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" Fig 26 A.ln reverse feed the stitch length is only approx.
1/3 of the forward feed stitch length.
| ie. Pa 25. Reverse Feed i Mechanism _
17/32" (13,49 mm)
— 37,64" (14.68 mm)
Fig. 24. Distance Between Needle Bar and Presser
я - NEEDLE BAR FRAME
“REVERSE LEVER
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+3 j Le TE MI rg + x 4 ‘art Ms
h il b ” + tm = . 3 1 ' E +
; 4 - В Bed ora Ir ES as i +
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bel Pal Hi A M ue FE ty tai” | way
Г. PRES E. JC!
ый A
Mat PA
was on -
ney (os F :
Ta MN
of 211 G 158 machines
Bar
“SHAFT CLAMP SCREW. + hk
Гы
sé e CATE
DE Fig. 26. Reverse Feed Ad ere REE
S Fig. 26 À
1]
E “BOBBIN CASE
E STOP, FINGER =
cool Height Adio ssiment (step One]
NTE Же IET акр
HOOK GIB
HOOK HEIGHT
ADJUSTING SCREW
HOOK HUB
SOCKET SCREWS
NEEDLE GUARD
Fig. 28. Sewing Hook Height Adjustment (Step Two)
OK: SADDLE:
REWS
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 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. |f
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 strikingneedle, 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 tc =chieve
the proper clearance Q 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
© . (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”
hd -
Zwischenraum 0,8 mm
Fig. в |
y
211 G. 351, 357, 358
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 a CT | : a
vertical centerline of needle blade. SOCKET SCREWS se | ся
| | | GASKET 7 =
If sewing hook is not correctly timed, loosen socket TT 1 =
screws shown in Fig. 30 and turn to proper timin == CR date ST lo
_ 9 J COVER PLATE La
position specified above. E CU e e
- Ra LAT AID TENER A Foe 5
+ ao? es Aa
Fis. 30. Sewing + Hook Timing о СВ a
TEO
- in Saad wr i
REMOVING 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.
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OUT TAPER 4 > .. > . - “i y AL 100718
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A
REMOVING SEWING HOOK FROM MACHINE
Toby
PEN Fin ; wel
Oe hy
Remove presser foot, throat plate and feed dog.
Loosen hook hub socket screws shown in Fig. 32.
4
dont Le ls
Lift hook off end of shaft. i
A
ПВА ПАННО À,
To remove hook shaft, first remove ball bearing CSS Fig. . Bobbin card Removal
ко, . . ARTE АЙ CAST = À y
retaining cap screws directly under hook shown in BCR AE ACRE ER SE Re 7.
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.
HOCK HUB
SOCKET SCREWS
Fig. 32. Bobbin Case Removal
1
A ©
Ly
BOBBIN CASE
CAP
„STOP. Foss ; SCREW
Sow REFERENCE
Ve MARK A
a MARK B
Ds = ео e su ; {
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14
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 omening ‘or 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,
rm me me bn mf al mi
4
i
3
Hook Fig. A (211 G 351, 357, 368)
Removal
> oA WN
Remove presser feet, throat plate and fe=d dog.
Remove bobbin case and bobbin.
Turn out screws €@ and remove hook gib © .
Remove bobbin case base © from hook © .
Turn out screw ©
Remove hook @ with needle guard @ from machine.
Replacement
1.
2.
со м о с в
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 © so that the pin © 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
Po Lass
Ue
A
я i
wie
E
a
e
CE
FEED DOG ADJUSTMENT
Before adjusting feed dog, regulate stitch length
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.
{7 A
po e
THROAT
PLATE
Fig. 35. Feed Dog and Throat Plate
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TAKE-UP LEVER
PULLEY
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Let Жо Fe Fm à 5; 4! i SO ke - - Tom + Je wy * Te = „тео a + à A
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En ЕВЕ CONNECTION
7 BELT PULLEY
GUARD COVER PLATE
Fig. 38. Take-up Lever Removal
REMOVAL OF TAKE-UP LEVER REMOVAL OF NEEDLE BAR ROCK FRAME
Remove arm top cover and face plate. Loosen Remove face plate and arm top cover. Loosen
take-up lever hinge stud set screw shown in Fig. 38. take-up lever hinge stud set screw shown in Fig. 38.
| Remove take-up lever hinge stud and take-up guard. Extract take-up lever hinge stud, take-up guard and
Lift take-up lever out through slot A in top of arm take-up lever. Remove cover from front of machine
shown in Fig. 38. arm after removing a screw (directly behind cover
plate) in rear of machine. Loosen needle bar frame
wy: shaft clamp screw shown in Fig. 39. Pull needle bar
$ a rock frame with its shaft from machine.
| E, * REPLACEMENT OF ARM SHAFT
E CONNECTION BELT
| da Remove needle, to avoid damage, before proceeding
| x to replace belt. Tip machine and slide belt off lower
| pulley shown in Fig. 40. Loosen two set screws in
HERR EN a | > machine pulley and remove pulley and ball bearing.
E e ta Lift belt up and draw it around arm shaft through
: se RO 8 CER AME og ara ST
19 ES esa Er space at B indicated in Fig. 38.
AE e EAN $ ptet p [TIRE Na :
EE I AN Mee Replace belt through ball bearing space at B. After
] ms placing belt over arm shaft connection belt pulley,
3 ETA replace machine pulley with ball bearing. To remove
3 “Pass INGE à all end play from shaft, tighten set screws in ma-
4 RE chine pulley and (holding needle bar crank in place)
3 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 turn
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
E
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CEE PE CON
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W's 3 rly Е try ir rios 13 A
A: м oY ; ATS Fg, pig go full A
т кая Ae € Pra rh te par a | SAE AN 7 KE
1 й te A РО ME LR EA pa A x x Fb PR A un = A, A
ra. a at CERN Н Y RATES: Pde Fe uk PII A
В De IN Aff | cgi 5 В 5 e ATAN
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pulley. This procedure should correctly time sewing
hook with needle. Check timing as indicated on page
Sars RR TT Te ER RS
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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
O 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 (all 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.