Singer 300wl03 User manual

Fofm 3066W
INSTRUCTIONS
FOR USING AND ADJUSTING
SINGER
SEWING MACHINES
300wl03 and 300w203
Machine 300w203
Special atlenlion is called to the lubricolinQ itistructions on pages 6 and 7
THE SINGER MANUFACTURING COMPANY
"A Trademark of THE SINGER MANUFACTURING COMPANY
From the library of: Superior Sewing Machine & Supply LLC

Copyright © 1958 by The Singer Manufacturing Company
From the library of: Superior Sewing Machine & Supply LLC

DESCRIPTION
Machine 300w103 has one needle and one looper and makes a
single row of two-thread chain stitching.
Machine 300w203 has two needles and two loopers for simultane
ously making two parallel rows of two-thread chain stitching. The needles
are set abreast and the distance between them may be from 3/16 Inch
to 1 inch, in stepsof 1/32 inch, as ordered. The standard gauges are 1/4",
5/16", 3/8", 1/2" and 3/4".
These machines are especially adapted for seaming overalls and
work pants, automobile trim, stitching tarpaulins, tents, seat covers and
similar work in medium and heavy fabrics.
A compound feed, consisting of needle feed and drop feed, working
in combination with alternating pressers, comprising on upper feeding
foot and lifting presser foot, carry the work forward in unison with the
needle in the material, insuring powerful, positive and even feeding of
two or more plies of material.
The maximum length of stitch is 3 to the inch. The needle bar stroke
is 1-1/4 inches and the presser bar lift is 3/8 inch.
An automatic oiling system delivers the required amount of oil to all
principal bearings.
SPEED
The maximum speed recommended for these machines is 4000 R.P.M.,
depending upon the nature of the work. For the first few days, the speed
of the
machines should not exceed 3500 R.P.M., after which they can be
driven at their maximum speed. The top of the balance wheel turns over
toward the operator.
CAUTION: Before starting the machine, it must be thor
oughly oiled, as instructed on pages 6 and 7.
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TO SET UP MACHINE
Assemble the iron work, legs, brackets, treadles, etc., as shown it
Fig. 2. Stand, Table end Electric Transmitter Assembled
for Operation of Class 300w Machine
Assemble thread unwinder as shown in Fig. 3.
Fig. 3
Thread Unwinder Assembled
Fig, 3A, Foot Lifter Lever
Connect foot litter treadle to foot lifter lever L5, Fig. 3A at back of
machine by means of chain furnished for purpose.
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FLUSHs.
mWER
mmRS
Assemble oil pan D to hangers
B, placing leather and steel
washers as shown in Fig. 4. At
tach oil jar to oil pans as shown in
Fig. 2.
First set right hand hanger B
as close to cut-out side as possible
flush with table as shown in Fig.
4. Then place left hand hanger so
that distance between centers of
rubber bushing holes of right and
left hangers is 17-3/16". Place four
rubber insulating bushings C in
hanger holes, as shown in Fig. 5.
When necessary, to level machine,
use four felt pods A on bed pins,
OS shown in Fig. 5, then set ma
chine on these pods, having bed
pins pass through rubber bushings
C.
Fig. 4. Hanger and Oil Pan Assembled
f.?05b
Fig. 5. Setting Up the Machine
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TO OfL THE MACHINE
The machine has an efficient automatic citing system comprising a
hollow arm shaft and o hollow bed shaft which act as oil reservoirs and
deliver the required amount of oil to all of the principal bearings when
the machine is in operation. The oil is distributed to the various bearings
by centrifugal force through small jets in the shafts so that only clean
oil reaches the bearing surfaces. Oil holes ore provided for hand oiling
of parts in movable contact which are not oiled from the reservoirs.
CAUTION: Use "TYPE D" OIL sold by Singer Sewing
Machine Company. See inside front cover for description of
this oil-
THE MACHINE MUST BE OILED AS INSTRUCTED BELOW AND ON
THE FOLLOWING PAGE. FAILURE TO DO THIS WILL RESULT IN DAM
AGE TO THE MACHINE.
NOTE: It is not necessary to remove the work plate for the
first servicing or subsequent oiling of the machine. For this
purpose, merely swing out the face plate and remove bed slide
plate.
USE ONLY THE PRESSURE OIL CAN NO. 228491 FURNISHED WITH
THE MACHINE, AS SHOWN IN FIGS. 6 AND 8.
TO OIL ARM
SHAFT
1. To fill arm shaft
oil reservoir, insert
spout of pressure oil
can in hole D, Fig.
6 and inject 6 shots
of oil into shaft.
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2. To fill bed shaft oil reservoir, push spring cover E, Fig. 7 to left,
insert spout of pressure oil can in hole F, Fig. 8 and inject six shots
of oil into shaft. Close oil spring cover E.
NOTE: The arm shaft and bed shaft con also be oiled from
right hand ends.
3. Apply oil to work plate oil holes and arm oil holes. Oil needle bar
bearings and connections, needle bar rock frame bearings, looper
rocker sleeve, presser lifting mechanism and looper pull-out rack.
AMACHINE IN DAILY USE MUST BE OILED AS FOLLOWS:
Fill arm shaft oil reservoir D, Fig. 6 (approximately 6
shots of oil).
Fill bed shaft oil reservoir F, Fig. 8 (opproximately 6
shots of oil).
Once a day Apply oil to all holes in work plate.
Oil needle bar bearings and connections and needle bar
rock frame bearings.
Oil looper rocker sleeve.
Oil feed
lifting rock shaft bearings in back of arm.
Occasionally oil tension release mechanism and looper pull-out rack.
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TO THREAD THE LOOPERS
THREADING FOR
Kim THREADS
RIGHT
IQOPER
THREAD
Fig. 9. Looper Threading
\LEFT
\LmER
MHREAD
I
THREADING
FOR REGULAR
THREADS
eeosd!
NEEDtl
Fig. 10. Looper Threading
Pull table slide toward you and turn balance wheel over toward you
until needle bar isat its highest position.
Move loopers out of sewing position, by pulling rod H, Fig. 11 out
1/4" and gear rack button G, Fig. 11 as far as It will go. This will make
threading easier and prevent accidental operation of machine before
loopers are returned to sewing position.
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To thread loopers, pass threads through threading points in the order
shown in Figs. 9 to
15. Dotted line indicates thread for left looper.
Fig. 12. Threading Take-up
for SHORT
Needle Loop
Fig. 11. Looper Threading
Fig. 13. Threading Take-up
for LONG Needle Loop
NOTE: To change formation of stitching from a short needle
loop to along needle loop, decrease tension on needle threads
and pass both looper threads over one arm of take-up wire
shown in Fig. 13. Adjust tension to suit.
Figs. 14 and 15. Threoding Looper
For threading loopers, use tweezers No. 228451, as shown in Figs.
14 and 15.
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mBHT
HmiB
jHfm
10
TO THREAD THE NEEDLES
LEFT
fmif
rm/iD
Fig. 16. Needle Threading
Turn balance wheel over toward you until needle bar Is at its highest
position.
To thread needles, pass thread through threading points in the order
shown in Figs.
16, 17 and 18. Dotted line indicates thread for left hand
needle.
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Fig. 18. Needle Threoding
11
eaosrs i
Fig. l7. Needle Threading
Draw about two inches of thread
through eye of each needle with
which to commence sewing.
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@ ©
Fig. 19
Setting Needles
12
TO SET THE NEEDLES
Insertthe needles up Into the needle
clamp as far as they
will go with
the scarf of 8<bch needle toward
the left/ as shown in Fig. 19,
then securely tighten the needle set
screws.
NEEDLES
Depending on the nature of material to be sewn, use needles of
Classand Variety 62x59 (for medium heavy work) and 62x57 (for medium
light work).
Needles 62x59 are made in sizes from 20 to 25. Needles 62x57 ore
mode in sizes 16 to 24.
The size of the needle to be used is determined by the size of the
thread which must pass freely through the eye of the needle. Rough or
uneven thread, or thread
which passes with difficulty through the eye of
the needle
will interfere with the proper operation of the machine.
Orders for needles must specify the quantity required, the size
number, also the class and variety numbers separated by the letter X.
The following is an example of an intelligible order:
"100 No. 22, 62x59 Needles."
The best stitching results will be obtained with needles sold by
Singer Sewing Machine Company.
THREAD
Either left twist or right twist thread can be used in the needles and
loopers.
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13
TO REGULATE PRESSURE ON MATERIAL
3.M0V£ UP TO
INCREASE PRESSURE.
DOWN TO DECREASE.
/. LOOSEN
2. LOOSEN
Fig. 20
When correct feeding pressure is
attained (which will feed work
without noise in spring arm con
nection), tighten lock screw 4.
Always use lightest pressure possi
ble to permit higher working speeds.
WHEN CORRECT PRESSURE
IS OBTAINED
4.TI6HTPN
S.TI6Hr£N
ftisxsas
£'202.86
Fig. 21
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14
TO REGULATE TENSIONS
needle
threads
Fig. 22
E.20Z6S
MORE
TENSION
For overage sewing, the tension
on the looper threads should be
very light.
Tension should be just
enough to set the stitch
properly in the material.
LOOPER
THREADS
MORE
TENSION
LESS TENSION
t02B
Fig. 23
TO REGULATE THE LENGTH OF STITCH
The letters A to L on the stitch indi
cator plate J, Fig. 24 denotes the various
lengths of stitches that can be made, the
letter A indicating the longest stitch. The
letter opposite the arrow K, Fig. 24 on
the front of the arm indicates the length of
stitch the machine is ready to make when
the plunger L, Fig. 25 and button M,
Fig. 25 engage the notches in the feed ec
centrics.
Fig. 24. Stitch Indicator
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I. PRBSS PLUNGER L
3. MENIN NOTCH, TWIST
CLOCKWISE ^ TURN
15
TURN TO
ENGAGE
NOTCH
GAGENOTBN
5. TURN WHEEL
UP FOR
SHORTER
DOWNFOR
LONGER
STITCH
Fig. 25. Adjustments for Changing Length of Stitch
The forward and backward movements of the needles and feeding
foot are regulated by the knurled plunger L. The travel of the feed dog
is regulated by the button M.
When changing the length of stitch, the following adjustments must
be made in UNISON.
Press in plunger L and at the same time turn balance wheel over
toward you
until plunger L enters a notch in adjustable eccentric on arm
shaft, then turn plunger clockwise to lock it in position. Now, press button
M and at the same time turn balance wheel over toward you to increase
length of stitch or over from you to shorten stitch, until desired letter on
stitch indicator is opposite arrow K. Then release button M and TURN
plunger L to rightor left until it springs outwardlyand releases eccentric.
The machine is then ready for operation.
CAUTION: NEVER change forward and backward move
ments of needles and feeding foot without changing the travel
of the feed dog.
The upper and under feeds are usually set to act synchronously, but
this setting is subject to slight variations depending upon the nature of
work being sewn.
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16
TO REGULATE THE AMOUNT OF LIFT
OF THE PRESSERS
Thevibrating presser or feeding presser is provided with needle holes
and moves forward in unison with the needles. The lifting presser has only
an up and down motion. Remove arm cover at Q, Fig. 26. The liftof the
vibrating and lifting pressers is controlled by adjustable eccentric N.
Turnbalance wheel until feeding presser is down, loosen two lock screws I,
and two clamping screws O, hold screwdriverin notch of adjusting disc P,
and turn balance wheel as indicated in Fig. 26, for required amount of lift.
TURN BALANCE WHEEL
MORE. /ykSb^LESS
LIFT / f Jff UFT^
HOLD NOTCHED
Q
Fig. 26. Regulating lift of Pressers
CAUTION: When correct lift is attained, securely tighten
two clamping screws O and their locking screws I. If it is desir
able to have either one of the pressers lift more than the other,
turn balance wheel until lifting presser is at its highest position.
Loosen two clamp screws U, Fig. 27, turn lifting rock shaft
crank T, Fig. 27 up or down until required lift of each presser
is attained.
CAUTION: Securely tighten clamp screws Ubefore oper
ating machine with power. Limit lift of pressers to minimum
required for the work, as this permits higher speeds.
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17
TO TIME PRESSER FEED LIFTING ECCENTRIC
The presser feed lifting eccentric unit is not spotted. Toadjust, loosen
two holding screws R, Fig.
27 by not more than one half turn with screw
driver.
(This will keep the part correctly aligned sidewise as the holding
screws engage a shallow groove in the feed driving flange S). Move feed
lifting eccentric so that vibrating presser will seat on work at about same
time needle enters work. This condition will vary slightly depending on
type of work being done.
CAUTION: Securely tighten holding screws R after adjust
ment is made.
Ezossr
ji9
Fig. 27. To Time Presser Feed Lifting Eccentric
NOTE: The instructions on the following pages are for
adjusters and mechanics only.
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18
TO SET FEED BAR AT THE
CORRECT HEIGHT
See that feed lift crank timing screw V, Fig. 28 engages shaft spot
correctly and that slot of feed lift
link clomp W is properly aligned with
rock shaft timing flat. If an adjustment is required, loosen clamp screw
X, move feed lift link to correct position, see that it is not binding side-
wise, then securely tighten clamp screw X.
Fig. 28. Adjustment for Setting Feed Bar at Correct Height
Fig. 29. Feed
Lift Crank and Link Assembly
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19
TO SET FEED DOG SIDEWISE
IN RELATION TO NEEDLES
To adjust feed dog sidewise so that needles will enter center of
needle holes, loosen thrust collar screws
In right collar A2, Fig. 30 and
in left collar Y and move feed rocker and feed bar assembly to required
position. (This adjustment permits a sidewise movement of feed dog of
not more than 1/64 inch.) When feed dog is correctly set, move thrust
collars into proper position and tighten
screws. See that feed driving strap
D2 and feed lifting link F2 are not binding.
For more than V 64 inch sidewise movement of feed dog, loosen
screws Y, A2, B2, and E2, driving strap D2 and feed lifting link F2,
and move feed rocker and feed bar assembly to required position and
retighten. Be sure strap D2 and link F2 are not binding.
Fig. 30. Adjustments for Setting Feed Dog
Sidewise in Relation to Needles
Fig. 31. Feed Rocker and Feed Bar Awembly
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20
TO SET FEED DOG FORWARD AND BACKWARD
IN RELATION TO SLOTS IN THROAT PLATE
To adjust feed dog in direction of feed after feed dog has been
positioned sidewise in relation to needles, set feed eccentric C2, Fig. 32
for desired stitch with respect to throat plate slots. Loosen set screws B2
and two clomp screws E2 in feed driving rock shaft crank and move feed
rocker Z to required position, then securely tighten two clamp screws E2
and lock them with set screws B2.
B2 C2
\r^ fS\
Fig. 32. Adjustments for Setting Feed Dog Forward and Backward
in Relation to Slots in Throat Plate
Fig. 33. Feed Driving Rock Shaft Crank and Feed Rocker Assembly
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