Singer WHA-1 - English - User Manual

INSTRUCTION BOOR
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jWWG MAC44
e
II

of many years of research and
Your sewing machine is the product
2
FOREWORD
3
strictly.
made by affiliated factories under
ed by our specialists in our factory
units are assembled and recheck
our main factory while complete
The furniture and attachments ore
rigid quality control program.
exacting specifications under our
and each machine is built the most
is the result of our constant effort,
fied and many labor saving extras,
This precision sewing head, simpli
sewing machine stores the world
ports immediately available at
standard and interchangeable with
bobbin cases hooks, etc., are
parts, such as needles, bobbins,
design, yet its moving and wearing
ultimate in efficiency, quality aid
hold sewing machues. It is the
developmer.t in the field of house
over.
F
FOREWORD

FL.1
chine store.
Never use a bent needle, nor one with a
pass freely through the eye. 1n general
bobbin as is used on top.
to the size of the thread and both should
sewing, use the same size thread in the
sufficiently large to permit the thr’ad to
be cut of time, and skipped or imperfect
be suitable to the material. Use a needle
The size of the needle should conform
stitches and may cause the needle to
stitches will result and needles may break.
THE BALANCE WHEEL, the machine will
NEEDLES AND THR&AD
TO THE STOP, FLAT SIDE TOWARD
break. Unless the needle is in CLEAR
blunt point, since this causes imperfect
change needles frequently.
needle clamp securely. For best results
in position correctly. Now fasten the
go, when the needle hits the stop it is
THE BALANCE WHEEL) as far as it will
new needle up (FLAT SIDE TOWARD
Remove the old needle and slide the
to fall out.
clamp will open, allowing the old needle
(A) on the right hand side and the needle
balance wheel (Fig. 3) TOWARD YOU
bar to its highest point by turning the
by hand. Loosen the needle clamp screw
To replace the needle, raise the needle
Fig.1
1— 4
- FLAT
s’o
%j, 4
j A
Use standard 15 x I -needles
Note:
5
available at any sewing ma

6
the finger (B) enters the delivery eye and
the latch mechanism catches the groove
near the end of the stud. This operation
is easy NEVR FCRC IT. TI-ree or
four inches of the thread hanging free
from the bobbin case will be brought up
through the needle plate stitch hole as
shown on page 12.
7
Fig. 2
Important:
In the following operations
the needle must always be
above the surface of the
machine.
Raise the needle by turning
the balance wheel TOWARD
YOU by hand.
TO REMOVE T-E BOBBIN CASE
Open the window for removing bobbin case
located in the left side of the Oil Re
ceptacle. With left thumb and forefinger
open the latch (A) and hold securely as you
withdraw the bobbin case from around the
holder post (D).
On releasing the latch and turning the
bobbin case downward, the bobbin case
drop out.
TO INSERT T-IE BOBBIN CASE
After winding a fresh bobbin and threading
the bobbin case (see pagas 8, 9, 10 and
11), hold the case latch with left thumb
and forefinger, (as explained above) to
prevent the bobbin from calling out.
Keeping protruding finger (B) topside to-’
ward the delivery eye (C), press the
bobbin case around the holder post until

matically and stop turning. Break 0ff the
thread and detach the bobbin from the spindle.
I-bId balance wheel firmly with left hand and
with right hand turn the stop motion knob
away from you until the machine is tight and
the needle bar moves with the turning of
the balence wheel.
9
5t09 MC
TRE
- WNEZL
Fig. 3
II
R
.—AUOMATC
DANEP
PL4TE
Pig. 4
NOTE : This machine uses standard 15
class bobbins available at all sewing
stores. The bobbin can be wound
while mcchine is in operation by not
releasing the stop motion knob as de
scribed in below paragraph. Therefore
needle and bobbin winder will operate
at the same time.
olding the balance wheel with the left hand,
turn the stop motion knob toward you. This
will permit the balance wheel to turn freely
while the needle bar remains motionless.
Place a spool of thread on the spool (A).
Pass the thread through the tension disc (B)
at right corer of the base of the machine.
Now wind the end of the thread around an
empyt bobbin seven or eight times and place
the threaded bobbin on the spindle (C) of
t’ bobbin winder. Press the bobbin into
the spindle with the left hand, making sure
that the PIN on the spindle fits into the
SLOT in the bobbin. Push the bobbin winder
lever (D) down until the small rubber wheel
presses against the hub of the balance wheel
and the clasp (E) falls between the sides of
the bobbin, holding it in position. Turn the
balance wheel toward you and proceed to
operate the rheostat control, as in sewing,
when the bobbin is full, it will release auto

10
F. 5
Fig. 6
Fig. 7
the delivery eye and the bobbin
should unwind freely. The tension
may be increased by turning the
tension screw to the RIGHT and
decreased by turning the screw to
the LEFT. (lig. 7)
11
the bobbin between the thumb
and two fingers of the right hand.
Insert the bobbin into bobbin case
and pull the trailing thread into the
(IZig. 5)
enters the delivery eye under the
slot, down and to the left until it
tension spring. (Fig. 6)
There should be a slight tension oil
the thread as it is pulled through
slot up. With 5 or 6 inches of
thread trailing in the palm, hold
left thumb and forefinger wth the
1-told the bobbin case between the

Fig. 8-A
1. Place a spool o1 thread on spool pin A
and lead the thread through the notched
thread guide (A) on the face plate.
2. Run the thread through the tension discs
(C) PROM BACK TO FRONT.
3. Draw the thread up over the tension bar
(D) and through the wire check spring (E).
4. Now take the thread up through the eye
0F the take-up lever (F) and dcwn through
the thread guides (G nd l-.
5 Thread the needle frcm left to right, pull
ing about six inches of thread through the
eye of the needle (I).
B
A
C
Fig. 8-B
1. Place a spoo 1 of thread on spool pin (A)
and pass the thread to the left through
thread guide (B).
2. Lead down from right to left between
tension discs (C).
3. Draw the thread up into the take-up spring
() until the thread enters the retaining
fork (D).
4. Now pass the thread through the hole of
thread take-up lever (F), and down to the
guide (G) on face plate.
5. Then lead into the wire guide (N) on the
needle clamp and thread the needle from
right to leFt, drawing about six inches of
thread throuh the eve of the needle (I).
13

14
case.
TNEN PLACE BOTI-l ENDS OP
TE Tb-1PEAD BACK BETWEEN
TI-IE TWO PRESSER POOT TOES
(A) (Fig. 9).
15
lest 3 or 4 inches 0f bobbin thread
does not rise, chock to see If at
hole (Pig. 9). If the bobbin thread
by hand until the needle moves
down and up again to its highest
point. Pull the needle thread
come up with it through the needle
gently and the bobbin thread will
turn the balance wheel toward you
I-bIding the loose end of the
needle thread in your left hand,
Pick up bobbin thread as follows;
Thread machine
is hanging loosely from the bobbin
Fig. 9

pressure on the rheostat control
and stopping the balance wheel
with the right hand. Raise the
needle to its highest point and
raise the presser Foot by liFting
the presser Foot lever with either
hand. Now draw the sewn
Fabric back and to the leFt about
eight inches and break or cut the
trailing threads.
Fig. O
16
17
machine Feeds without any assist
the work by pulling the material,
desired size (see page 21 ) and start
sewing.
Do not try to help the Feedirg oF
cause it to blunt or break. As the
ance, it i suFFicient merely to guide
wheel TOWARD YOU From top
down, by hand. Regulate stitch to
as this may bend the needle and
into material by turning the balance
and lower the presser Foot lever
as car as it will go. Insert needle
With the needle raised and the
threads drawn back, at least 4
inches through the toes oF the
presser coot, place the material to
be sewn beneath the presser coot,
the Fabric gently, by hand in the
direction you want it be sewn.
To Remove ihe Work
Stop the machine by releasing the

NON-
I
Deck Drop Feed By turning this device
to DOWN position the ma
I ‘ tie material guided by hand.
Jsed with the automatic
darner, this will make darn
I ig, no iogramni ig, etc. ouch easier. The
special, enciusive adustment for SILK makes
it possible to sew this fine material wthout
snagging.
1-linged Slide Plate: This esc’usive Improve
ment makes it possible to reach the bobbin
case easily by givi ig you ouch more hand
room than in any other machine. npig. 4, page
8 19
h
chine can be made to stop
4
feeding automatically and
foot is relieved so that you may darn, mend,
self adjusting spring loading mechanism. By
pressing the release spring the pressure bar
AuomaLk Darner: A new design with a
screw race assembly and to explain the action
Your dealer will be happy to show you the
operation of the precision engineered single
chine by turning the balance wheel TOWARD
moment. Do not be afraid to free the ma
the machine freed almost instantly. The ma
chine may seem to become stiff For a
the thread will be swept out of the race and
Should this happen while you are using your
machine, the thread will simply break and,
by the action of a scientifically cut hook,
chine or of tursing the balance wheel back
wards while the machine is threaded.
to jam, or freeze, when thread is improperly
result of sewing without material in the ma
embroider or monoqrarr. Fig. 4, page 8)
introduced into the race assembly. This
nitroduction of alien thread is usually the
Other round bobbin, oscillating machines tend
vations incorporated in this machine eliminates,
for all practical purposes, the age old problem
One of the outstanding engineering moo
0f the cut hook in preventi sg jamming.
Fig. 11
OT-lER EXCLUSIVE FEATURES
YOU by hand.
of amming.
JAMMING
FEATURE

20
plate.
down as far as it will go. To sew
RVERSEE, push lever (A) up as
far as it will go. You can ew the
same size stitch forward or reverse,
by merely flicking lever (A) down
or up.
Never sew in the neutral
position (0-Fig. 12) 21
numbers indicate the number of
stitches per inch, 7 being largest
and 3k.) the smallest stitch practical
the two windows at the right. As
appear in the windows. These
it is moved up, toward the top,
position, a 7 will appear in one of
the numbers 12, 15, 20 and 30 will
screw (B) and move it up. When
the thumb screw is in its lowest
the lever (A) to the center, or
neutral position. Loosen thumb
inch, forward or reverse, as desired.
To adjust the stitch length, move
Your machine can be adjusted to
sew from 7 to 30 stitches to the
for home sewing.
As the desired stitch setting a
pears, tighten thumb screw, thus
automatically locking the adjusting
To sew FORWARD, pull lever (A)

All adjustments should be made while the
presser coot is down since an automatic
release does not permit adjustment; tn be
made when the foot is up. If a perfect
stitch cannct be obtained b5 adjusting the
needle thread tension, it may be necessary
to adjust the bobbin thread tension as
plained on page 10, Fig. 7. This macline is
correctly adjusted before leavin
3 the Factory
and checked and readjusted before the dealer
A careful regulation ot the tensions on this
delivers it to you.
machine will assure you of the Fnest seams
that mechanical design will produce.
23
be made gradually, not abruptly and the
turn the nut in the opposite direction. The
tension adjust from 0 to 9 in one 360 turn,
with 0 being the liqhtest tension and 9
being the tightest. All adjustments should
(diagram) clockwise; to lesser, the tension,
To increase the tension, turn the thumb nut
dle thread is too loose, the bobbin
thread will lie straight alonq the
is too tight, or f that on the nee
under side of the material, making
If the tension of the bobbin thread
needle thread will lie straight along
the upper surface of the material,
is too tight, or f that on the
bobbin thread is too loose, the
If the tension on the needle thread
should be equal and just sufficient
on the upper and under threads
ly strong to lock both threads in
impercections in the stitch can usaily
be corrected by varying the needle
Regulating the Needle Tension: Minor
For perfect stitching, the tension
making an imperfect stich (B)
the center of the work (A)
an imperfect stitch (C).
(C) Fig. 15
(A; Fig. 13
(B) Fig. 14
tension only.
required tension setting will vary with the
size 0f thread being used. A little practice
will make instant tension adjustments possible.

24
Fig. 16
nozzle well into oil holes.
After oiling, run the machine
rapidly for a few minutes, so that
the oil may penetrate into the
bearings. For the proper care of
your machine oil frequently.
Neglecting to do this tends to
shorten the life of the machine,
and may cause trouble and an-
noyance.
JSES BIG MACHINE ONyJ
underside of the machine. A few
drops of oil in the bobbin race
by the arrows in Fig. 16, a drop
oF oil being sufficient at any one
freely at all contact points on the
will help your machine to run
place. Oil should be applied
dry. Oil, when necessary, should
be applied at the points indicated
come in contact with others, must
should not be allowed to become
A sewing machine never needs
be covered with a film of oil, and
grease. All moving parts which
freely.
When oiling, insert the oil can

j1Yd3?

5
6
7
4
8
9
10
2
‘3
‘4
IS
HUe
Screw
18
19
20
21
22
23
24
25
26
27
28
29
30
Screw
47 Lower Shaft Cark
92
31
48 lower Shft
49 Shittie Driver wtF Sprirrg
50 Pessrri Bar LiNe- Sin
5l 91-ssOr Bar Liltrr
erd Bar
5
cr
56
Ferrd Do Set Scr ow
Teper Cenr-- lcew -or Peri Per
93
94
95
32
33
96
34
97
36
tion
37
38
39
40
98
103
4
104
05
106
107
108
109
110
111
Bobbin Winder Tension Bracket
112
Assembly
Set Screw for Bobbin Winder
113
Tension Bracket
V Belt
114
115
116
Dial Tension for Bobbin winder
Accessories Box
117
Felt
118
Bobbin
119
Driver (Large)
Driver (Small)
120
121
122
123
:7
Oil
58
124
Turre;Cuet-r S--, wrth it
I—lead Set Screw for I-lead Hinge
102 Fixing Screw and Washer for
Bobbin Winder Rubber Wheel
Limitting Plate for Feed Regu’a
Ball Oiler for Bobbin Winder
Bobbin Winder Assembly
Bobbin Winder Set Screw
Name Plate Screw
99 Stitch Dial Lever and Nut
Washer for Pixing Screw
88 Upper Thread Tenuion Spring
87 Cap Washer for Tension Dial
70 Hinge Stud for Drop Feed Con
100 Stitch Dial Plate Screw
60 Lower Shaft Crank Slide Block
85 Upper Thread Tension Knob
Thread Take Up Spring
Arm Slide Plate
Arm Slide Plate Screw
64 Drop Feed Plate
65 Drop Peed Bracket Assembly
61 Horizontal Peed Rock Shaft
63 Drop Feed Connecting Rod
82 Needle Plate Set Screw
Tension Release Pin
62 Vertical Feed Rock Shaft
89 Cap for Tension Dial
-
90 Tkr4 wr r
68 Drop Peed Rod Bearing
66 Drop Feed Plate Screw
71 Drop Peed Rod Spring
83 Face Plate Assembly
Cord Bushing
Stitch Dial Plate
72 Drop Feed Knob Rod
Limitting Plate
59 Oscillating Rock Shaft
101 Balance Wheel
77 Shuttle Race Screw
84 Pace Plate Screw
78 Needle Plate
79 Slide Plate Spring
80 Slide Plate
Tension Stude
Spool Pin
Needle
Key No Parts Name
67 Drop Peed Knob
Tag Pin
81 Spring Screw
86 Tension Dial
Oiler
73 Shuttle Race
74 Shuttle h-look
75 Bobbin Case
necting Rod
69 Cutter Pin
76 Bobbin
r-d Stud
9 utcir
Camp Stop Motion Clamp Screw
Washer ior Stop Motion Screw
Stop Screw for Clamp Screw
Main Shaft Bearing Set Screw
2 Thread Take Up Cam
3 Stud Screw and Nut for Thread
Thread Take Up Cam Screw
Counter Balance Set Screw
Peed Cam
Balance Wheel Bushing
Peed Cam Set Screw
Cap for Thread Take Up Lever
6 Taper Pin for Balance Wheel
Bush ing
17 Thread Take Up Leuer Stud
Thread Take Up Lever Assembly
Darner
Presser Bar Spring Bracket
Presser Spring
Presser Bar
Presser Poot
Presser Poot Thumb Screw
Oil Cap for Needle Bar
Needle Bar
Needle Clamp
Needle
Needle Bar Thread Guide
Thread Cutter
rarts name
Snt Screw for Needie Bar Thread
Guide
Taper Pin for Lou-w Skft Crank
Nnede Bar Cosn—cting Link
Neude Bar Bearing
trlu Bar Stud
Forked Cerrooctina Pod
Purr4 Foiked Connecting Hing-r
Screw with
Rock Washer
Siri Biocs c0 P-
Stude Scrr-w -rd Rr-qator
09
Slide Block
42 E--d Rrpu ccc-
43 Sot Scr-w b i-1i
44 Hingr-d Srcd urw icr Peed
Reqrrlator
45 Crank Rod Tupur Screw with Nut
46 5cr Scr.-w o. Lco- Shaft Carrk
52 Set screw for Presser Bar LiNt
53 Slide Roller and Stud for Prop
Mairr Shaft Bearing
Counter Balance
r-rd Bacc-t
°r-ed Doe
Take Up Cam
Main Shaft
ey o.