Singer 211W151 User manual

I
r--
Fo r m 3 17 3W
( 962 )
SERVICE MANUA
FOR
SI GER *
211W151 machine
SINGLE NEEDLE
LOCK STITCH
This book contains complete information covering operation
and adjustment of machine and a list of parts, accessories and
special fittings. Illustrations and descriptions of parts in rear
of book should be consulted when ordering any part of machine
requiring renewal.
THE SINCER MANUFACTURING COMPANY
*A Trademark of THE SINGER MANUFACTURING COMPANY
Co pyrlght © 1962 by The Sln ger Mo tt ufacturlng Company
Copyr ~ g ht Under ln ter r\ atlona l Copyright Union
A ll Rlohts l • ierved under l rt ter ~ Am., lcon Ca ;- yrlght Un ion Print
ed in U. S. A.
From the library of: Superior Sewing Machine & Supply LLC

2
D ES CRI P TIGN --------------------------------------------------
Machin e 211W151 produc e s high sp ee d,
precision stitching on coats, s uit s , ov e r-
alls, rainwear, sports out e rw e ar, work
clothes and similar it e ms of m e dium to
heavy weight fabrics.
Single needle, lock stitch . F ede ral
Stitch Type 301.
Belt driven rotary s e wing hook on ve r-
tical axis makes two r e volutions for e ach
stitch.
Safety clutch, adjustable to suit sewing
conditions, protects hook from damag e
resulting from accidental strain. Should
any foreign matter clog the hook, this
new type safety clutch will disengage it-
self and will re-engage only after area
has been cleared.
Compound feed, combination of drop
feed and needle feed.
Maximum length of stitch, 5 to inch.
Presser bar lift, 1/4 inch.
Hinged presser foot.
Needle bar stroke, 1-5/16 inches.
Needle thread lubricated by felt pad
automatically supplied with oil from res-
ervoir in face plate.
Bed, 20-3/8 inches long, 7 inches wide.
Space at right of needle, 10-1/2 inches.
SPEED
Maximum speed, 4000 R. P.M., depend-
ing on material being stitched. It is ad-
visable to run a new machine slower than
maximum speed for first few minutes to
allow time for oil to reach moving parts.
Machine pulley turns over toward operator.
SETTING UP
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 A does not
strike drip pan. Screw slots in bracket
provide necessary adjustment. Set stop
stud B to stop action of knee lifter as soon
as presser foot is raised enough to trip
hand lever. Screw drain pipe C into drain
hol e in drip pan and attach oil jar D,
a s s
hown.
Fi g. 2. Knee Lifter, Drip Pan and Oil Jar in Position
HOOK LUBRICATION
Hook saddle contains oil pumped to
bobbin case raceway in hook during op-
eration. To control amount of oil flow,
tip machine back and loosen control valve
set screw A, Fig. 3.
Fi g. 3. Sewing H ook 011
Control Valve Set Screw
Fi g. 4. Sewing Hook
Oil Control V al ve Screw
Return machine to upright position.
Turn control valve K to right for more oil;
to left for less oil. After desired adjust-
ment is attained, re-tighten control valve
set screw A. See complete lubricating
instructions next.
From the library of: Superior Sewing Machine & Supply LLC

LUBRICATION
Use SINGER* OIL,
11
TYPE A'' or
"TYPE C''. Use "TYPE C" OIL when
an oil is desired which will produce
minimum stain on fabrics even after
long period of storage.
3
CLEANING
Clean out all lint and other waste from
around sewing hook and between feed
rows on underside of throat plate.
IS IDLE LUBRICATING
PAD
Fig. 6. Reservoir in Arm
FOR
MORE
THREAD
LUBRICANT
Fi g. 5. Lubricatin g Machine Head
_,.
r
SATURATE WICK
NEEDLES
Use SINGER* Needles
Catalog 1901 (135x7)
Fi g. 7. Reservoir in Bed
when machine is set with 1 /4" clear-
ance under presser foot
or
Catalog 3355 (135xl7)
when machine is set with 3/8" clear-
ance under presser foot
Needle sizes determined by size of
thread and type of material being sewn.
CHECK TWICE DAILY
/
HIGH MARK
OIL TWICE DAILY
AS FAR AS POSSIBLE
AND TIGHTEN SCREW
Fi g. B. Settin g th e Needl.e
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4
THREADING NEEDLE
Fig. 10. Threading Tension Assembly
Fig. 9. Upper Threading Complete
Fig. 11. Threading Needle
BOBBIN REMOVAL
BOBBIN--------
Fig. 12.
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OIL
5
WINDING THE BOBBIN
TENSION CONTROL
1. PLACE BOBBIN ON
SPINDLE AS FAR
AROUND BOBBIN
THEN START
MACHINE
NOTE-TIGHTEN FOR MORE THREAD ON BOBBIN:
Regulate to stop winder wh en bobbin is wound
1/16 inch short of bobbin rim
Fig. 15.
Fig. 13.
BOBBIN REPLACEMENT
DIRECTION OF THREAD
AROUND BOBBIN
•
Fig. 14.
THREADING BOBBIN CASE
PULL THREAD
DRAW THREAD TO
BACK OF PROJECTION
DRAW THREAD UP
TWO INCHES
Fig. 16.
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6
THREAD TENSIONS
Turn machine pulley until tension
screw is accessible.
Fi g. 17. Bob b in Thread Tension
Tension on threads should be as light
as possible while still sufficient to set
stitch in material.
Regulate needle thread tension only
when presser foot is down.
Fi g. 18. Needle Thread Tension
STITCH LENGTH REGULATION
1. Stop machine •
2. Depress button shown in Fig. 19.
3. Turn machine pulley toward you
slowly- until button drops (clicks).
4. Turn machine pulley until desired
stitch length is opposite mark on
arm (see Fig. 20 ) .
5. Release button.
Never depress the button while the
machine is running.
Make certain that plunger is disengaged
before starting machine.
20. Stitoh Length
Indicator
Fi g. 19. Stitoh Len gt h Button Regulator
PRESSER FOOT PRESSURE
TURN TO-=-=-=
ADJUST
Fi g. 21. Adjusting Pressure
The pressure on the material should be
as light as possible, while still suffi-
cient to insure correct feeding.
From the library of: Superior Sewing Machine & Supply LLC

~ THREAD CONTROLLER
I 0 The function of th e thread controller
spring is to hold back the slack of the
needle thread until point of needle reach-
es the goods in its descent, as without
this controlling action of the spring, the
slack thread {especially silk) will some-
times be penetrated by point of needle as
needle is descending.
Fig. 22. Adjustment of Thread Controller
To change the thread controller stop
for more controller action on the thread,
loosen set screw Z, and turn thread con-
troller spring stop T, Fig. 22 to the
right; for less action, turn thread con-
troller spring stop T to the left, after
which securely tighten set screw Z.
It may be found advisable to increase
tension of spring for coarse thread, or
to lessen it for fine thread.
To increase tension of thread controller
on thread, loosen tension stud set screw
Y, located nearly under tension stud, and
turn tension stud A2 slightly to the left.
To decrease tension turn it to the right.
Re-tighten stud set screw Y 0
TO SET NEEDLE BAR
See that needle is up in the holder as
far as it will go. There are two lines
across the needle bar about two inches
above the lower end. When needle bar
is at its lowest position, the upper mark
should be just visible at end of needle
bar frame.
In case needle bar is not correctly set,
loosen needle bar connecting stud pinch
screw M, Fig. 23 and place needle bar
in correct position as directed above,
then re-tighten screw M.
7
TO SET A NEEDLE BAR WHICH HAS NO
MARK
Regulat e the stitch length as instructed
on pag e 6, so that there is no fe e ding mo-
tion, then set needle bar so that when it
rises 3/32 inch from its lowest position
and point of sewing hook is at center of
needle, eye of needle will be about 1/16
inch below point of hook.
RELATIVE POSITIONS OF NEEDLE BAR
AND PRESSER BAR
The distance between the needle bar and
presser bar {after regulating stitch length
so that there is no feed movement) should
be 17/32 inch as shown below 0
Fig. 23. Relative Positions of Needle
Ba.r and Presser Ba.r
If the distance between needle bar and
presser bar is more or less than 17/32
inch, loosen needle bar frame shaft clamp
screw N2, Fig. 24. While this screw is
loose, needle bar frame can be moved for-
ward or backward, as may be required,
Fig. 24. To Adjust Needle Rock Frame
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8
'\lOti! the distance between the n ee dl e bar hook so that a hole in bobbin case is in
and-presse-r ba-r i s 17/ :3 2 -i nch. A -p i- e-ce· ------' lin e witn - hoo ].{h:eig nt --a djusting screw 2,
of sheet metal 17/32 inch wide may be Fig . 25. To raise hook, turn down screw
used to determine the correct distance. J2. If there is insufficient space for th e
When the adjustment has been made, shim to pass between bobbin case stop
securely tighten screw N2. finger K and throat plate, turn up screw J2
TO ADJUST HEIGHT OF
SEWING HOOK
When lower timing mark A, Fig. 26 on
needle bar is just visible at end of needle
bar frame on upward stroke of needle bar,
the hook point should be about 1/16 inch
above eye of needle, as shown in Fig. 26.
To adjust height of hook, fasten throat
plate to bed of machine with bobbin case
stop finger K, Fig. 26, in sewing position.
Use . 032 inch shim. Shim should slide
between bobbin case stop finger K and
throat plate. If the shim is too loose,
turn machine pulley so that socket screws
J2
Fig. 25. Height Adjustment of SeJring Hook
HZ, Fig. 25 are accessible with a socket
wrench. Loosen both screws and remove
cloth washer from bobbin case, then turn
A
0
Fig . 26. Height Adjustment of Sewing Hook
and press down hook. Check timing and
tighten socket screws H2, then turn screw
J2 just enough to leave a light tension.
TO SET SEWING HOOK TO
OR FROM NEEDLE
Fig. 27. Adjustments Underneath the Machine
To prevent point of hook from dividing
strands of thread, it should pass as close
as possible to the needle (within the clear-
ance above needle eye).
Turn machine pulley over toward you
until point of sewing hook is at center of
needle. Loosen screws Nand T, Fig. 27,
underneath bed of machine and move hook
saddle to the right or left, as may be re-
quired, until point of hook is as close to
needle as possible without striking it, then
securely tighten screws Nand T.
CAUTION: Make sure hook driving gears
U, are set correctly with relation to face
of hook saddle. Use • 008 shim.
The function of hook washer (needle
guard) G2, Fig. 25, which is attached to
bottom of sewing hook, is to prevent point
of hook from striking needle if, when pass-
ing through mate rial, needle is deflected
toward hook.
The needle guard can be bent with a small
pair of pliers until it prevents hook point
from striking needle, but it should not be
bent outward enough to deflect needle from
its normal path.
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TO TIME -sEW ING OOK
Regulate the stitch l e ngth, as instructed
on page 6, so that there is no feeding mo-
tion.
Remove throat plate and turn machine
pulley over toward you until lower mark
across needle bar is just visible at end
of needle bar frame on upward stroke of
needle bar, as shown in Fig. 26. If
needle bar and sewing hook are correctly
timed, the point of hook will be at center
of needle (about 1/16 inch above the eye)
as shown in Fig. 26 .
F ig . 28. Timing Sewing Hook
In case sewing hook is not correctly
timed, turn machine pulley over toward
you until needle bar has descended to
its lowest point and has risen to the po-
sition where lower timing mark
across needle bar is just visible at end
of needle bar frame, as shown at A,
Fig. 26. Loosen two socket screws in
hub of hook shaft gear L2, Fig. 28 and
turn hook until point of hook is at center
of needle. Then securely tighten two
socket screws in hook shaft gear L2.
9
TO REMOVE BOBBIN CAS E
FROM SEWING HOOK
{see Fig . 29)
Remove the two hook gib scr e ws W,
from sewing hook, lift off hook gib F2,
and remov e bobb in case X.
X
F2
w
Fig. 29. To Remove Bobbin Case from
Sewing Hook
TO REMOVE SEWING HOOK
FROM MACHINE
Remove presser foot, throat plate and
feed dog, then laos en two socket screws
in hub of hook H2, Fig. 30 and lift hook
off end of shaft. To remove hook shaft,
first remove screws in ball bearing re-
J2
Fi g. 30. To Remove Sewing Hook f rom Machine
taining cap directly under hook. Next,
tip machine back and loosen set screws
L2, Fig. 28 in hook shaft gear and lift
hook shaft by top end. If shaft does not
lift out ea s ily, loosen screws in cover
plate of hook saddle sufficiently to per-
mit oil to drain out, then remove cover,
being careful not to damage the gasket
M2, F i g. 32, page 10, then tap end of
hook s haft.
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e-AUTION: 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 to a gauge
at the factory. When replacing or install-
ing a new hook, care must be taken to se e
that the bobbin case stop finger K, Fig. 31
fits correctly in the throat plate. If it is
too high, it will interfere with the free
passage of thread. If it is too low, it may
slip out and cause damage to hook and
bobbin case when machine is in operation.
To make the adjustment, remove cloth
washer in bottom of bobbin case, loosen
socket screws HZ, Fig. 30, page 9 in hook
hub, then turn hook until adjusting screw
appears beneath one of the holes in the
bottom of bobbin case. Hold hook down
against its seat and turn adjusting screw
with screwdriver until the proper up and
down position is attained. Tighten socket
screws HZ, Fig. 30 in hub of hook.
10
To remove ball bearing from hook shaft,
rest bearing with shaft-end up on two pieces
of sheet metal placed across the open jaws
of a vise. Tap shaft until bearing is re-
moved.
TO ADJUST BOBBIN CASE OPENER
{see Fig. 31)
The bobbin case opener Y should be
set so that it touches the bobbin case as
lightly as possible, yet turns the bobbin
case enough to make a sufficient open-
ing for the free passage of the thread be-
tween throat plate and bobbin case.
TO TIME BOBBIN CASE OPENER
{see Figs. 31 and 3Z)
Turn machine pulley over toward you
until lower timing mark on needle bar is
even with end of needle bar frame on up-
ward stroke of needle. In this position,
the mark DZ, on flange of opener driving
shaft, should line up with reference mark
CZ on hook saddle. If opener shaft is out
of time, tip machine back and loosen
y
E2
02
C2
Fi g. 31. Adjustin g Bobbin Case Opener
K2
Fi g. 32. Timing Bobbin Case Opene ~
socket screws KZ in opener driving gear
then return machine to upright position
and turn shaft with screwdriver in screw EZ
at top end of shaft, then tighten socket
screws KZ in gear.
From the library of: Superior Sewing Machine & Supply LLC