Form 30-289 G/1073-894
SINGER
Service Manual
MACHINES
211G146, 211G151 AND 211G157,
158, 351, 357, 358, 451, 457, 651, 657, 658
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
Arm Shaft Connection Belt Replacement
Bobbin Case Opener, Adjusting
Bobbin Case Opener, Timing
Bobb in Case. Removal From Sewing Hook
Bobbin Removal
Bobbin Replacement
Bobbin Thread Tension
Bobbin Winding
Description of Machines
Feed Dog Adjustment
Feed Eccentric Adjustment
Feed Reversing Mechanism (211G157)
Feed Reversing Mechanism
Adjustment (211G157/158)
Hook Height
Hook Lubrication
Hook Position Relative to Needle
Hook Removal
Hook Ti ming
CONTENTS
DESCRIPTION
INSTALLATION
LUBRICATION
OPERATOR INFORMATION
ADJUSTMENTS
4-5
5-9
3
4
.9-16
INDEX
.16
14
14
13
7
7
3
15
15
11
8
7
12
5
12
13, 14
13
Installation
Lubrication
Needles
Needle Bar Bushing (211G146)
Nedle Bar Height (211G146)
Needle Bar Height (211G151 & 211G157)
Needle Bar Position Relative to Presser Bar
Needle Bar Rock Frame Removal
Needle Setting
Needle Thread Tension
Pressure on Material
Speed
Stitch Length Regulation
Take-up Lever Removal
Thread Controller
Thread Tensions
Threading Bobbin Cose
Threading (Lower)
Threading (Upper)
5
9
16
A, 9
10
16
6
8
9
4
10
10
10
4
5
8
8
7
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 ports 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.
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 boll 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 a r m .
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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.
Boll bearing roller presser.
Clearance under roller presser: 1/4 inch.
Maximum stitch length: 6 per inch.
211G151 COMPOUND FEED
Ideal for stitching coots, overalls, rainwear, workclothes, 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 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
211 G 351
Features
Large Vertical Axis Hook. All other features comply with 211 G 151 machine.
Max. St. Length
5 SPI = 5 mm
211 G 357
211 G 358
Large Vertical Axis Hook. All other features comply with 211 G 157 machine.
Large Vertical Axis Hook. All other features comply with 211 G 158 machine.
6 SPI = 4.2 mm
2/2 SPI = 10 mm
211 G 451
211 G 457
Underbed Thread Trimmer with Thread Wiper.
All other features comply with 211 G 151 machine.*
Underbed Thread Trimmer with Thread Wiper.
All other features comply with 211 G 157 machine.*
5 SPI = 5 mm
6 SPI = 4.2 mm
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
211 G 657
211 G 658
Large Vertical Axis Hook; Underbed Thread Trimmer with Wiper.
All other features comply with 211 G 157 machine.*
Large Vertical Axis Hook; Underbed Thread Trimmer with Wiper.
All other features comply with 211 G 158 machine.*
6 SPI = 4.2 mm
2/2 SPI = 10 mm
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.
Max. Speed
2,700 RPM
2,700 RPM
1,800 RPM
4,000 RPM
4,000 RPM
2,700 RPM
2,700 RPM
1,800 RPM
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DRAIN
PIPE '
STOP
STUD«
€ '
I
JDI
I l i f t e r
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 lever. Screw drain pipe into drain hole in drippan and attach oil jar as shown.
Fig. 2. Installotion View
LUBRICATION
•BEFORE STARTING MACHINE
FILL TO HIGH MARK
OIL GUAGE-
HIGH MARK H
CHECK
TWICE
DAILY
SATURATE
WICK
OIL
TWICE
DAILY
HIGH MARK
'CHECK
TWICE
DAILY
Fig. 3. Arm Reservoir
All moving parts are lubricated from two reservoirs enclosed in the machine.
Before storting the machine, oil reservoirs should be filled and criticol oreos lubricated.
FILL THREAD LUBRICATOR
RESERVOIR WITH
SINGER*
THREAD LUBRICANT
"TYPE E" I
//)
WHEN MACHINE
IS RUNNING
OFF-^"""^'^
WHEN MACHINE
IS IDLE
Vii)
FOR MORE
THREAD LUBRICANT
LUBRICATING
PAD
Fig. 5. Thread Lubrication
FILL RESERVOIR'
TO HIGH MARK
Fig. 4. Bed Reservoir
.• i?
E
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 OS indicated in Fig. 3.
The machine arm reservoir contains on 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 gouge. 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 IS 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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CONTROL
VALVE
SCREW
CONTROL PI
VALVE
SET SCREW .j
•..|a
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 on 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 control 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 mode 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.
Fig. 7* Hook Lubrication (Step Two)
SPEED
Maximum speed for mochines 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 materiel 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 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
Orders for needles should state quantity required, size number and catalog number.
For example;
100 Needles, Size 14, Catalog 1740
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MOVE TO^
HIGHEST POINT LOOSEN NEEDLE
CLAMPING SCREW
LONG-^
GROOVE
TO LEFT
INSERT NEEDLES AS
FAR POSSIBLE AND
TIGHTEN SCREW
Fig. 8* Needle Setting
HOLD THIS END
TWIRL OVER TOWARD YOU
Fig. 9. Thread Twist Determination
SETTING THE NEEDLE
1. Turn 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 in 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 ot highest position.
Pass thread through threfading points as indicated in Fig. 10.
Draw about 2 inches of thread through needle eye to start sewing.
Threading Tension Assembly
MOVE TO
HIGHEST
POINT
Threading Needle
'BEHIND OIL PAD
Fig. 10. Upper Threading
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LOWER THREADING
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.
LIFT LATCH
LIFT OUT BOBBIN
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 is stitching.
Bpf''
Fig. 11. Bobbin Removal
Fig. 12. Bobbin Winding
PLACE BOBBIN
ON CENTER STUD
CLOSE LATCH
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.
• DIRECTION OF
THREAD AROUND BOBBIN
Fig. 13. Bobbin Replacement
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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 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
PULL THREAD
THROUGH SLOT
Fig. 14. Bobbin Threading (Step One)
MORE \V
TENSION ^
LESS '
TENSION
Fig. T6* Needle Thread Tension
MORE TENSION
LESS TENSION
Fig. 17. Bobbin Thread.,|"e^sion
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 slock thread before needle point enters fabric to prevent needle from penetrating thread.
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To adjust thread controller, loosen set screws
A and B, shown in Fig. 18. Turn thread 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
C.
TENSION STUD
SPRING STOP
Fig. 18. Thread Controller Adjustment
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.
3. Turn machine pulley In direction (+) when a longer stitch is desired (less SPI) and in direction (-) when a shorter stitch is desired (more SPI).
4. Release button. NEVER START MACHINE UN
TIL BUTTON IS RELEASED.
BUTTON
MARK -i +
Fig. 19. Stitch Length Button Regulator
PRESSUREON 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.
TURN TO
ADJUST
MORE PRESSURE
LESS PRESSURE
Fig. 20. Pressure Adjustment
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ADJUSTMENTS
Fig. 21. Needle Bar Bushing Adjustment
UPPER
TIMING
MARK
2.738"
SET
SCREW
CLAMP
SCREW
Fig. 22. Needle Bar Height Adjustment
STUD
PINCH
SCREW
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 adiust 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
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.
UPPER
TIMING
MARK
Fig. 23. Needle Bar Adjustment
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DISTANCE OF NEEDLE BAR FROM PRESSER BAR
(211G151 AND211G157)
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.
17/32" (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
SHAFT CLAMP SCREW n m
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.
REVERSE LEVER ^
Fig. 25. Reverse Feed Mechanism
CRANK
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 against the bearing block. Loosen set screws C and turn bearing pin B until the stitch length is the same in reverse feed as in forword feed. Tighten all screws.
HOLE IN REVERSE
FEED LEVER
Fig. 26. Reverse Feed Adjustment
211G158 only
The maximum stitch length of approx. 10 mm Is being limited by the Feed Reversing Shaft Crank Hinge Stud Stop
.,A",Fig,26A.ln reverse feed the stitch length is only approx.
1/3 of the forward feed stitch length.
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Fig. 26 A
I
,1
LOWER TIMING
MARK
BOBBIN CASE
STOP FINGER
Fig. 27. Sewing Hook Height Adjustment (Step One)
HOOK GIB
HOOK HEIGHT
ADJUSTING SCREW
ADJUSTMENT OF SEWING HOOK HEIGHT
When lower timing mark on needle bar is just visible at lower end of needle bar frame on upword
stroke of needle, the hook should pass about 1/16
inch above upper edge of needle eye as shown in
Fig. 27.
To adiust 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. Retighten socket screws and turn hook height adjusting screw again just enough to leave a light tension.
Check sewing hook timing.
NEEDLE GUARD
HOOK HUB
SOCKET SCREWS
Fig. 28. Sewing Hook Height Adjustment (Step Two)
HOOK SADDLE
SCREWS
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. Retighten 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.
HOOK DRIVING GEARS
Fig. 29. Sewing Hook Adjustments
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Hook Height {Fig. A) 211 G 351. 357. 358
The height adjustment of the hook serves to achieve the proper clearance O between the throat plate 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
O . (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 is properly seated.
Clearance- 0.032"
Zwischenraum 0,8 mm
Fig. A
211 G. 351. 357. 358
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12a
NOTICE
12b
From the library of: Superior Sewing Machine & Supply LLC
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.
SOCKET SCREWS
COVER PLATE
Fig. 30. Sewing Hook Timing Adjustment
HOOK GIB BOBBIN CASE-
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
HOOK
GIB
SCREWS
BALL BEARING
RETAINING C ^
SCREWS'C-'''''''''''^
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 plote completely, being careful not to damage the gasket. Tap the end of hook shaft.
VIEW UNDER HOOK (b)
Fig. 31. Bobbin Case Removal
HOOK HUB
SOCKET SCREWS
Fig. 32. Bobbin Case Removal
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BOBBIN CASE
STOP FINGER
CAP
SCREW
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 gouge 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.
REFERENCE
MARK A
REFERENCE
MARK B BOBBIN CASE OPENER
Fig. 33. Bobbin Case Opener Adjustment
ADJUSTING BOBBIN CASE OPENER
The bobbin case opener, shown in Fig. 33, should be set so that it touches the bobbin cose as lightly as possible and turns the bobbin cose enough to moke a sufficient opening 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.
GASKET
SOCKET
SCREWS
Fig. 34. Bobbin Case Opener Timing
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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 O and remove hook gib O .
4.
Remove bobbin case base ©from hook O .
5.
Turn out screw© .
6.
Remove hook O with needle guard © from machine.
Replacement
1.
Check proper seat of disc © on the hook shaft © .
2.
Fasten needle guard © on the hook by placing its stop © into the appropriate hole of the hook © .
3.
Place needle guard © together with hook © onto the hook shaft © so that the pin © is seated in the appropriate hole of the hook.
4.
Tighten screw © .
5.
Place bobbin case base into hook ©.
6.
Replace hook gib and fasten with screws © .
7.
Replace bobbin case and bobbin.
8.
Replace feed dog, throat plate and presser feet.
©
O
©
©
From the library of: Superior Sewing Machine & Supply LLC
14a
NOTICE
14b
From the library of: Superior Sewing Machine & Supply LLC
FEED DOG ADJUSTMENT
Before adjusting feed dog, regulate stitch length for longest stitch. If feed dog is correctly adjusted,
oil 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 con 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
Fig. 35. Feed Dog and Throat Plate
® e
FORK SCREW
ROCK FRAME
PINCH SCREWS
Fig. 36. Feed Adjustments
LOCKING SCREW
ECCENTRIC ADJUSTING r \ i € / r m i a d
DISC SPRING
LOCKING SCREW ADJUSTING SCREWS
Fig. 37. Feed Eccentric Adjustment
From the library of: Superior Sewing Machine & Supply LLC
From the library of: Superior Sewing Machine & Supply LLC
To get replacements that a re the same as parts in new machines...
m
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 mode by SINGER.
TO ALL WHOM IT MAY CONCERN:
The improper plocing or renewal of the Trademark "SINGER" or any other of the Trademarks of The Singer Company (all of which ore 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.
From the library of: Superior Sewing Machine & Supply LLC
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From the library of: Superior Sewing Machine & Supply LLC y-is f
