Global WF 955-AUT Parts list manual

GLOBAL
WF 955-AUT
Instruction & parts Manual
www .global sew .com
[email protected]

CONTENTS
l. PRECAUTIONS
BEFORE
STARTING OPERATION.. ...
......
...
....
.
.....
.... ...
....
.. .
..
.
..
..
....
.
.....
.
.......
2
2. MAIN SPECIFICATIONS..
..
.. .
..
..
······
..
.... ··•·· •
··
•
··
.........
.
.....
.... ... ...
..
··· ····•·
·····
··.....
..
2
3. PREPARATION AND LUBRICATION ..
....
..
..
..
....
....... ....... .... ... .
....
..
...
...... ....
...
.....................3
4. REPLACE
NEEDL
ES
...
.....
...
.. ... ...... ...... ... ..... .... .
...
......
..
...
......
.. ....
.....
.. .. ....
..
....
.. ... ...
....
.3
5.
WINDING
..
.......
.
......
.....
......
.
......
.
.....
..
.......
....
..........
.. ..... ... ..
...
.
.......
.
....
.
....................
4
6. WINDING
ADJUSTMENT.
.......
..
.
..
.....
.
.......
.. .. ....
.....
...
..
..
.....
.
......
......
..
............
...
.....
....
4
7.
REMOVING AND INSERTING THE BOBBIN
........
.. .
...
....
...
...
..
.
..
........
.. .. .
....
... .. .. .
....
.
...
......
4
8.
THREADING.. ....
....
......
..
..
...
................
... .....
..
..............
.. ....
....
.....
......
.
....
... .....
.......
....5
9. REGULATING
THE
THREAD
TENSIONS..
..
............
......
.
.............
...
..
.............
....5
10
. ADJUSTMENT OF
THE
PRESSURE
ON
THE MATERIAL. ..
..
.. ,
..
....
... .
....
.
..
..
..
...
.. .
............
.. .
..
6
11.
ADJUSTING
THE
LIFT
OF
THE
ALTERNATING PRESSER FEET.
..
.
.........
.
.......
.
......
.....
.. ... ..
.....
6
1
2.
STITCH LENGTH ADJUSTMENTS AND REVERSING LEVER
....
.
..
..
.............................
..
...
.....
6
13.
ADJUSTING
THE
HEIGHT
OF
THE
FEED DOG
...................
.. ..
..
...
..
............
..
...........
.
.........
6
14
. RELATIVE POSITION OF
THE
FEED
DOG
TO
NEEDL
E PLATE
..................................
..
........
7
15
. THE POSITION OF
THE
NE
EDLE
AND THE NEEDLE HOLE OF THE FEED DOG..
........
.. .. ....
...
.. .7
16. TIMING
THE
NEEDLE
WITH FEED DOG.. .
..
·
·•
·.... .
.......
.....·•· ·
•·
·...... ·
··
······
......
..
...
..
.
..
7
1
7.
ADJUSTING
THE
HEIGHT
OF
THE
NEEDLE BAR
............
...
,
....
..
.......
..
... .
..
.
.............
...
..
.......
8
18
. TIMING BETWEEN
THE
HOOK
AND
THE
NE
EDLE
....
...
.....
.
....
..
....
...
..
.. .. .. .. .. .... ..
....
... ..
.....
.8
19
. ADJUSTING
THE
HEIGHT
OF
THE
PRESSER FEET
....
... .
................
.
....
...
....
..
..............
.
.......
8
20. TIMING OF
THE
VIBRATING PRESSER FOOT
............
..
....
......
....
... .
....
..
.....................
.......
9
21. ADJUSTMENT OF
THE
CL
EARANCE
BETWEEN FEED FORKED CONNECTION AND FEED FORK
COLLAR ..
..
.
.........
........
... . .
..........
.. .
......
.
...
.... ..... ....... .... .... ...... .
..
..9
22. ADJUSTING THE
THREAD
CON
TROLLER SPRING
..............
.
.....
.
...
....
..
.........
......
..
.....
...
..
..9
23. ADJUSTMENT OF
NEEDLE
BAR STOP POSITION
..
........
..
....
...
.........
....
..
.....
......
....
..
.
..........
9
24
AD
JI
I
SIM
ENT
OF
KNlFE
ENGAGEMENT
..
..
....
.
........
...
....
..
.....
..
.
..
.... ... ..
................
.
........
..
10
- ) -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

.
1.
PRECAUTIONS
BEFORE
STARTING
OPERATION
1) Safety Precautions:
(
1)
When turning the power
on,
ke
ep
your hands
and
fingers away from the area around/under
the
needle
and
the
area around
the
balance
wheel.
(2)
Power
must
be turned off
when
the
machin
e is not
in
use,
or
when
the
operator leaves
the
seat.
(3)
Power
mu
st be turned
off
w
hen
tilting
the
ma
c
hin
e head,
in
stalling
or
removing the "V" belt, adjusting
the
machine, or when replacing.
(4)
Avoid
placing
fin
g
ers
, hairs, bars
etc.
, near
th
e balance wheel, "V" belt, bobbin winder balance wheel,
or
motor
when
the
machine is
in
operation.
(5)
Do
not
insert fingers into the thread take-
up
co
ve
r, under/around the needle, or balance wheel when the
machine
is
in
operation.
(6)
If a belt cover, finger guard,
eye
guard are installed,
do
not operate the machine without these safety
devices
.
2) Precautions before Starting Operation:
(I )
1f
the
machine's
oil
pan
ha
s
an
oil
sump,
ne
ve
r
op
erate
the
machine before filling
it.
(2)
If
the
machine is lubricated by a
drop
oiler, never operate the machine before lubricating.
(3)
When
a
new
sewing machine is
fir
st turned
on
, verify the rotational direction
of
the balance wheel with
the
power
on
.
(Th
e balance
wh
e
el
s
hould
rotate counter-clockwise
when
viewed
from
the balance
wheel)
(4)
Verify
the
voltage
and
(s
ingl
e
or
thr
e
e)
pha
se
with
tho
se
given
on
the
machine nameplate.
3) Precautions for
Operating
Conditions:
(1)
Avoid
using
th
e
111a
c
hin
e al
abn
ormally
hi
gh te
mp
era
tur
e
(
35
°G
or
higher ) or
low
lempenilttre
cs
·c
or
lower)
(2)
Avoid
using
the
machine
in
du
sty condition
s.
2. MAIN
SPECIFICATIONS
Item
I
WF-9
55
I
WF-955
/
AUT
I
NF-951
/
LH
Ma
x.
Sewing Speed
~()()()
r-p111
Stitch
Length
()
10
111111
-
----
-··--
--
-----
--·-
·-··-·
Take-up
Lever
Stroke
7
1.
:i
111111
------
·
- -
-·---
------
- . ----··
--
.
-··-·-
Needle
Bar
Stroke
:i
fi
111111
Height
of
Between
Main
~
r
111111
I
and
Sub
Presser
Foot
;-J
Presser
foot
By
Hand
8
111111
lift
By
Knee
I
1111111
--
·
--
·
Needle
Ill'
...<
17
~~ii
~!J
I:!
Rotating
Hook
LARGE
HOOK
Lubrication
Manual
Motor 3
70W
Clutch
Motor
I
Speed
adj.
Motor
I
370W Clutch
Motor
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

3.
PREPARATION
AND
LUBRICATION
1)
Cleaning the machine
Before leaving the factory, the machine parts are coated with rust-preventive grease, which may be
hardened and contaminated by dust during storage and shipment. This grease must be removed with
gasoline.
2) Examination
Though every machine is confirmed by strict inspection and test before leaving the factory, the
machine parts may be loose or deformed after long distance transportation with jolt. A thorough
examination must be performed after cleaning the machine. Turn the balance wheel to sec
if
there
is
running obstruction, parts collision, uneven resistance or abnormal noise.
If
these exist, adjustment
ni.ust
be
made accordingly before nm-in operation.
3) Oiling
(Fig.l,
2, 3, 4)
Please do not operate the machine before lubricating well.
The
points with
aITow
in the fig are oil
positions.
Caution:
Please use white spindle oil.
Fig.I
0
Fig.2
Lubrication
of
rotating hook (Fig.4)
Add the oil from the oil hole l unit) to the position
2.
Adjusting the lubrication (Fig.4)
4
~/@\''"'~
Deer ease 1
ncrease
Fig.4
Oil
adjusti11.g
screw 3 can adjust the lubrication
of
the rotating hook: Tum oil-adjusting screw 3 clockwise
to
increase oil and turn oil-adjusting screw 3 counter-clockwise to decrease oil.
4.
REPLACE NEEDLES (Fig.5)
I)
Tum the balance wheel to lift needle bar I to the upper end
of
its stroke.
3-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2)
Loos
en
ne
e
dl
e clamp
sc
rew
2.
While keeping
Lhe
lon
g
groove of the needle l
ef
tward fully
in
se
rt the
ne
e
dl
e shank
up
to the
bottom
of
Lhc
needle socket.
Caution:
Th
e direction
of
th
e
lon
g groove should be le
ft
.
3)
Then
tighten nee
dl
e clamp
sc
rew 2
5.
WINDING (Fig.6)
I)
Put
th
e bobbin 3 on
th
e bobbin winder sha
ft
as
far
as it will
go
.
2) Bring
th
e thread forward toward the boobin and wind from
be
low
in
clockwise direction several
tim
es around
th
e bobbin.
4)
Push
the lever 4 to\\'ard o
th
er s
id
e
so
that
th
e winding wheel
and
··v·
bell
will
engage a
nd
th
en start
th
e
ma
c
hin
e.
5)
The winding \\heel \\'ill automalicalh be
fr
ee
l'r
om
'·V
' belt
and
slop after
th
e bobbin is filled with thread
6.
WINDING ADJlJSTl\i1ENT (Fig.6)
I)
Wh
en the wound thre
ad
la
yer docs not pre
se
nt
a cylindrical
shape,
loo
se
n
se
t
sc
rew
.5
or bobbin winder tcns1on bracket a
nd
slide
bracket leftwa
rd
or rightward. After
ad
equately
po
s
ition111
g
th
e
bracket, tighten
sc
l screw
S
2)
Do
not
overfill
th
e bobbin. The optimum
len
g
th
or thread
\\'ill
(Ill
about
80'
1/,
,
or
bobbin ca
pa
c
it
y.
Thi
s c
an
be
ad1u
sled
by
adjusting
se
re
\\'
(>
of
b
ob
bin
,,
·
ind
cr stop
lat
ch
A
3)Adjusting
of
the winding
ten
sion
Th
e winding tension c
an
be a
dju
st
ed
by tension sc
re
w 7.
7.
REMOVING AND INSERTING THE BOBBIN
I) Turn the balance wheel
lo
Ii
fl
needle bar I
lo
lh
e upper end
of
it
s strok
e.
Place
th
e feed
do
g
at
thi
s
s
ide
in
its
tra
ve
l turning the balance whe
el
,
and
op
en
the
s
lide
plat
e A (Fig I)
2)
Open
on
Lhc
drip
pan
, and then open the
hinged latch with left
Lhumb
and index finger
And
pull
bobbin case and bobbin
fr
om rotary h
oo
k While
th
e la
tch
is
held open,
th
e bobbin will be retained
in
the
boobin case. Release
or
th
e latch and turning or
th
e open s
ide
or
th
e bobbin case dmrnwa
rd
w
tll
cause
th
e bobbin to drop
out
.
2
Fig.5
Fig6
Fig7
3)
Hold
the bobbin
bctvv
ccn
th
e thumb and
l"
orc
li11
gc
r o
l"
yo
ur
right hand and
pull
o
ut
a
len
g
th
ol'about S
cm
or
thread.
Hold111
g the bobbin case
in
yo
ur
left hand turn
th
e open s
ide
up
and
pla
ce
th
e thr
c;:i
ded bobbin into
il
(Fig
7)
-1)
With
the
ri
g
ht
lrnnd
guide
th
e thr
ea
d
int
o
th
e slot
in
th
e edge ol"thc bobbin c
as
e.
Then pull the thread
lo
the
left.
und
er tension spring I (Fi
g.
7)
and into
th
e de
li
Ye
t
-y
c,c
.
In
o
rd
er to keep
th
e bobbin
l'rom
dropping out
of
th
e case
"hen
1l
is turned with
th
e open s
id
e
elem
11.
ahva, s keep
I
he
hi
n
gc
d latch
at
th
e
l"ronl
or
th
e bobbin
--
4
--
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

case
open
.
5)
Take
th
e thre
ad
ed bobbin c
as
e by the
lat
ch
and
place
it
on
th
e center stud of the bobbin case holder.
Release latch
and
press bobbin case
on
to
center stud until
th
e latch catches the undercut thereon with a click that
can
be
heard. Permit about
5
cm ofbobbin thre
ad
lo
hand down freel
y.
Be
sure
to
push the slide plate
to
the
right
before starting
to
s
ew.
8.
THREADING (Fig.8)
I)
Raise
th
e needle bar to
it
s
hi
gh
es
t point
and
le
ad
th
e
thread
from
the thread stand
th
e following order.
From
th
e
thread stand lead the
th.read
from
back
to
front
through the
low
er guide hole
in
pin
I on top of the machine ann,
th
en
again
from
right to left
tlu-ough
the
upp
er g
uid
e
hol
e
in
this
pin
. Pass thread
in
weaving fashion
tlu-ou
gh
th
e three holes
in
guide
2,
and
from right
to
left
ov
er
and
between the
tension disc
3.
Now pull thread downward
and
from
right
to
left beneath
and
arotind
th.read
controller
4,
continue
to
pull
th.read
upward against the pressure of the
,.virc
spring
Fig.8
into
the
fork 5,
in
the thre
ad
cont.roller. Guide upward through the point
of
controller discs
6,
and
th.read
guide 7,
and
from right
to
left
tlu
·ough the eye
in
take-up lever 8, down through thread guide 7, again
and
then through 9,
I
0, Il
and
from
left
to
right through
the
eye of
the
needle
12.
2)
After
the
above threading, hold the
end
of thread with your left
hand
,
and
turn the balance wheel
with
~our right hand so that bobbin
tlu-ead
ma
y be
pi
cked
up
by needle thread. And put their ends of thread back
through under
the
presser
foot
for
starting opcrntion
9.
REGULATING THE THREAD TENSIONS
For ordinary stitching, the tension
of
th
e upper
and
the
lower
tlu-eads
should
be
equal
so
as
to
lock both
1e
matena.
1g.
9 If the tension
on
either
th.read
is
stronger than
on
the other,
imperfect stitching will
be
the result. If the tension
on
the
upper thread
is
greater than that on
the
lower
th.read,
it
will
lie straight along the
upp
er surface ofthe material.
(2
Fig
.
9)
Ifthe tension on the lower
th.read
is
greater than
that
on
th
e
upper
thread,
the
low
er thread
will
lie
straight along
th
e tmderside ofthe material.
(3
Fig
.
9)
I)
Tension
of
the
upper (needle) thread:
Before adjusting the tension
of
the upper (needle) thread, be certain that the presser foot
is
let
down
but
not
in
lifted position.
To
adjust
ten
s
ion
, turn serrated
nut
(A
Fig
.
8)
on
tension device
to
clockwise
to
increase tension,
while turning
it
to
counter-clockwise
to
decrease
it.
2)
Tension
of
the
lower (bobbin) thread (Fig.
7)
The lower (bobbin) thread tension
is
control
led
by
the
larger screw
(2
Fig.
7) near the end of
the
spring at
the
outside
or
the
bobbin case.
Turn111
g this screw
to
clockwise
to
increase
the
thread tension, while turning
it
to
counter-clockwise
to
decrease
it.
We
II
ba
Ianee Upper
thread strong
or lower
thread
weak
3
~
Upper
thread
weak
or
lower
thread
strong
Fig
.9
- 5 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

10.
ADJUSTMENT
OF
THE
PRESSURE
ON
THE
MATERIAL
The pressw·e
of
the presser feet
is
adjusted by the screw D (Fig.2) with screwdriver. To increase the
pressure, turn the screv-· to clockwise and
to
counter-clockvvise
to
decrease
it.
11.
ADJUSTING THE LIFT
OF
THE
ALTERNATING
PRESSER FEET
(Fig.
I
0)
The thickness
of
the material should control the height
of
the lift
of
the alternating presser feet. The lift should be
just enough for clearance
of
the material.
1)
With normal adjustment
both
feed lift to equal
height:
To
taler lift, loosen the
wing
nut A and move the
link and stud assembly along the slot-move
up
to raise the
feeding presser foot and push down
lo
lower this foot.
Tighten wing nut upon completion
of
adjustment. However,
some materials may require unequal heigh
of
lift.
Fig.
IO
2) When altering the lift
of
the lifting presser foot
(A
Fig.5) tmequally against that
of
the vibrating presser
foot (B Fig.5) or vice versa, see the instructions "
ADJUSTING
THE
HEIGHT
OF
THE
PRESSER
FEET"
12.
STITCH LENGTH ADJUSTMENTS
AND
REVERSING LEVER (Fig.11)
Stitch length can
be
set
by turning the detail
2.
Numeric figures
on
the dial
show
the stitch length in mm.
The desired numeric figure on the dial should be
set
at
just
above
,v
·
13.
ADJUSTING THE HEIGHT
OF
THE
FEED
DOG
(Fig.12)
The maximum height
of
the feed dog (
l
Fig.12)
from the surface
of
the needle plate (2 Fig.
12)
is
normally
1
mm.
l) Lay down the
machine
head toward the other
side, and turn the balance wheel so as to raise the feed
dog
to
it highest point.
2) Loosen bell crank screw F (Fig.4) and adjust the
height
of
the feed dog by raising or lowering it.
3) Securely tighten the screw upon completion
of
adjustment.
- 6 -
1
Feed dog
~-...----7
Imm
2 Need Ie pI
ate
Fig.11
Fig.12
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

14.
RELATIVE POSITION
OF
THE FEED DOG TO NEEDLE PLATE
(Fig.13)
I) Set
th
e stitch length
at
minimum.
2) Tum the balance wheel so as lo raise
th
e feed dog
to
it
s
hi
ghest point.
3) Lay
down
the machine head toward
th
e oth
er
s
id
e and
loosen the screw
5
(Fig.4).
4) Adjust to be 32. 1
mm
from
th
e edge
of
th
e needle plate
to
the cent
er
of
the needle hole on the feed
clog.
(
Fig
.
13)
5) Securely tighten the screw.
15.
THE POSITION OF THE NEEDLE AND
THE NEEDLE HOLE
OF
THE FEED DOG
Turning the balance vvheel to lower slowly the needle bar,
check whether the needle descends to the center o[the needle hole
of
the feeder or not. (Please check again the needle
is
perfect
one.)
1) Remove the
cover
G
(Fig.2) and loosen the screw
1
(Fig.14) slightly.
2) Holding the bottom
of
the needle bar rock frame
H
(Fig.3),
move it
as
may be required to get the correct position to the Iced
dog.
3) Tighten the screw and close the cover.
16. TIMING THE NEEDLE WITH FEED
DOG (Fig.IS, Fig.16)
It
is
important that the timing relationship between the
needle on its downwoard stroke and the feed dog movement is
maintained al all times.
When
the
scarf
of
th
e needle on the
downward stroke reaches the top surface
of
the feed dog, the feed
dog movement
must
start.
Wh
en adjustment is required, u
se
the
following procedure to change the position
of
cam
l)
Loosen the screw l
for
cover plate 2 and then remove the
cover plate 2.
2)
Normally put the arrow mark
7
of
the cam
6
on the
V
ditch
5
of
arm shaft. Then tighten
th
e cam screw.
3) Tum the balance wheel to the needle at I mm up from
it
s
lowest point.
32.1mm
Fig.13
----0---
--
-
---
·
Fig.14
'----
-
------------
-'
Fig.15
9
10
87
5
Fig.16
4) Pushing
the
stitch length regulating lever up and clown, tmen the cam 6 and
set
this at the point both the
needle and the feed dog rest. After positioning co
mpl
eted, tighten the each screw securely
- 7 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

17.
ADJUSTING THE HEIGHT
OF
THE
NEEDLE
BAR
(Fig.17)
When
the needle bar
is
at its highest point, normally the measurement between the smface of the needle
plate
and
the
upper
end
of
th
e needle eye
is
22
.3
mm.
You
can also adjust
thi
s
at
it
s lowest point. I
11
thi
s case, normally
the
measureme
nt
betv,ecn the surface of
the
needle plate and the upper end
of
the needle eye
is
11
mm.
To
adjust this, loosen the screw
J
(Fig.3) and raise
or lower the needle bar
as
may be required. Then, tighten the screw upon completion
of
adjustment.
NOTE: These measurements are approximate standard, accordingly, following final adjustments "TIMING
BETWEEN THE HOOK AND THE NEEDLE" are
reco1m11ended.
18.
TIMING BETWEEN THE HOOK
AND
THE
NEEDLE (Fig.18, Fig.19)
After setting the needle barheight, set stitch length lo minimum, turn the balance ,vheel toward you
until
the
needle bar reaches
its
lowest point. Continue tnrning and allow the needle bar
to
raise about 2 mm while on its
upward stroke. With needle bar
in
thi
s
p1.,
,
,1lion
,
the
point
of
the sewing hook should be
at
the center
of
the
needle,
and
normally, the measurement bet\veen
th
e hook point and the upper end
of
the needle eye should be
2.4
mm,
further the clearance betwe
en
the
hook
point
and
the needle hollow should be about
(l.05
to
OI
nun.
1)
If
the sewing hook should not be timed correctly, loosen the three set screws. Tum the hook shaft
to
align
the
hook
point with the center
of
the needle. Re-tighten the three set screws and re-check the timing
of
the
se\.ving
hook
.
2)
To
adjust the clearance between the hook point and the needle hollow, loosen the two screws
and
move
the
hook
to
the right or
to
the left
as
may
require. Please note one
of
the
two screws
is
placed on the V ditch
of
hook
shaft. Therefore, keep the screw
on
V ditch during adjustment. Re-tighten the acrews.
22
1rrm
===~=_l
Fig.17
Fig
18
-19.
ADJUSTING THE HEIGHT
OF
THE
PRESSER
FEET
(Fig.20)
1)
Adjustmcnl
by
the presser
bc1r
lifter:
Loo
s
en
the screw I
sufficiently, raise the presser
bc1r
lifter and lossen the set screw 2.
Move
the lifting presser foot
up
or down
els
mc1y
be
required so
as
to
get
the
co1Tect
height and tighten the screws.
2) Adjusting
the
lift
of
allernating
pre
sser
fe
el If
th
e height
of
the
lifting presser foot changes, the momentums
of
the lifting
and
vibrating presser foot vary, thus the height of
th
e vibrating presser
Fig
.
19
5 4 3
Fig.20
foot
must be adjusted.
To
adjust this, lower the presser bar lifter, holding the vibrating presser
l'ool
B
(Fig.(>)
and
loosen the
hexc1gon
screw 3 and move the presser
foot
up
or down
as
nwy
be
required. After selling the position.
lighten
the
screw.
--
8 - -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

20. TIMING
OF
THE
VIBRATING PRESSER FOOT
Thi
s is the normal timing when turn
th
e bn
lan
ce wheel toward
yo
u,
nft
er lowering
th
e
pr
esser bar lifter, the
, ibrating
pr
esser foot should rem;h
th
e k e
el
dn
g e
ai-li
er than
th
e nee
dl
e eye comes
to
, and when
th
e needle raises,
th
e vibrating
pr
esser fool should leave
th
e feed dog a
ft
er
th
e nee
dl
e eye has le
ft
the
fe
e
der
This is due the reason
that the vibrating presser foot
mu
st
ti
g
htl
y hold
th
e goods while the needle
is
passing the goods for avoiding
irregular stitche
s.
To
adjust this, set
th
e lift of
th
e a
lt
e
rn
at
in
g
pr
e
ss
er feet
to
equal, loosen the two screws 4
(Fi
g.20) and adjust
th
e rotating
po
sition
of
th
e c
am
5 (
Fi
g.20)
fo
ster or slower as
may
be desired, and tighten the
screw
s.
21. ADJUSTl\1ENT OF
THE
CLEARANCE BETWEEN FEED FORKED
CONNECTION
AND
FEED FORK C
OLLAR
(Fig.IS, Fig.16)
In
correct clearance between
th
e fork
8
or
reed rorkcd connection and feed fork collar
9
will bring irregular
stitch length or overheating,
et
c.
To adjust
thi
s, open
th
e cover plate. Re
mo
ve the cover plate and the oil
resen
:
oir
To
increase
th
e clearance, loosen the screw·
nnd
turn the scre
vv
to
left
or
counter-clockwise. This adjustment
should
be
done with turning
th
e balance wheel toward y
ou
to
get correct clearance. Upon completion
of
adjustment,
ti
g
ht
en
th
e screw which
is
loosened
to
tou
ch
th
e feed fork.
22.ADJUSTING
THE
THREAD
CONTROLLER
SPRING (Fig.21)
Normallv. the thre
ad
controller spring I should hold s
la
ck
of
the upper
thread until
th
e needle reaches
to
the goods, and
it
should pause while raising
or
the needle
nnd
passing
of
th
e upper thread through
th
e bobbin case.
1)
For more contrnllcr action on the thread: Loosen the stop screw 2, move
the stop
to th
e
ri
g
ht
(For less action, move
to
the left).Tighten the screw.
2)
To
adjust the tension spring: Loosen the serrated nut 4 and
th
e screw
5.
5
Imn
llw
lcn~ion ,
111d
6
s
li
g
hLI~
·
to the
left
to
t
~l
ro
nglhen
lh
o lonsio1·
1-H
e-l-l,el+lett-Hi1
e-l-
----:-:
7"
"-t:~~~.~,fiJ
'----
-t-
--
----
len
sion. turn lo the
ri
ght)
"ith
a scrc,Hlri, er.
Ti
g
ht
en
th
e screw and
nut
upon
comple
tion
or
adjustment.
23.ADJUSTl\1ENT
OF
NEEDLE
BAR
STOP POSITION
(Fig. 22, 23)
l) Adjusting
of
"Up"
position
When
th
e pedal is kicked down by heel,
th
e
machine slops at ·'
UP
" position.
lf
the marks deviate
larger than 3
111111
adjust
as
follows :
(I)
Disconnect the plug (
12
pins)
of
cable from
the machine head
(2)
Run
th
e machine and stop at
''
UP"
position.
(>) While holding the balance wheel inse1i
th
e
"
ndju
sting
tool
..
in
th
e
hol
e A,
th
en remove
th
e tool.
- 9 -
B
Pully
3 2
Fi
.
21
Adjusting tool
Fig.
22
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2) Adjusting of "DOWN" position
Set the machine stops at "DOVv'N" position
When the pedal is kicked clown by hell. th e
machine stops as "DOWN" position. If th e marks
deviate larger than 3 mm adjust .as follow s:
(I) Disconnect the plug (12 pins) of cable
from the machine head
(2) Run the machine and stop at "DOWN"
position. Timing mark arm
3rd mark
\ Rotating
\ \ direction
1st mark
Fig.23
(3) While holding the balance wheel insert
the "adjusting tool" in the hole R, then
remove the tool.
1st mark "Up" position
3rd mark "Down" position
3) Confirm the stop operation then the plug (12 pins) coming from the machine head into
the receptacle.
24... HOW TO RE-SET THE SAFETY CLUTCH MECHANISM
Fig.2
The sewing hook and its mechanism are protected by a safety clutch. If it should
become necessary to re-~ngaged the safety clutch, depress button (E, Fig.2) in
the bed plate of the machine. At the same time, turn the machine pulley until the
locking mechanism re-engages the drive shaft beneath the bed of the machine .
Open bed slide plate and rock the machine pulley back and forth to remove any
foreign matter may have lodged itse lf in the hook. Do not use any sharp-edged
tools, etc., lest the hook be damaged.
- 10 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

ADJUSTMENT OF SPRING TENSION OF SAFETY CLUTCH (Fig.25)
The sewing hook and its mechanism are protected by a safety clutch. If it should
become necessary to adjust spring tension.
Use the following procedure:
1. Depress the button (E, Fig.2) in the bed plate of the machine with your left hand.
At the same time, turn the machine pulley strongly so that the safety clutch
disengages.
2. Lay down the machine head toward the other side. Hold the safety clutch
[(left) (1) and turn the safety clutch (right) (2) until you can see the screw (4)
through the hole (3)]
3.
To strengthen the tension of spring (5), turn the screw (4) to the right, while to
lighten the tension, turn the screw to the left .
4. Upon completion of adjustment , depress the button (E, Fig.2). At the same
time, turn the machine pulley until the safety clutch re-engages.
3
1
4
K
3I ... Adjustment of thread trimmer mechanism:
1) The thread trimmer mechanism illustrated as Fig.34.
IC--·--· · --------·· · --,
~ixed blade bracket unit j
-- - -- ·------- .
Thread guide "-..
ri•ed blade ,
.... ,,
I
.'/
MovalJlff kn,te (felt\ Krn1~ driving
crank
Twist spring
'
[_~•~ base Ullll _I Colla\ \
I
f
Knole driving
shah
Thrnad trimmer \\
cilm \
I
Cam follower Cam follower Drive lever Stopper plate
er ank ( 1) <:rank (1)
Flexible wore
'----·------- ·--·-·- --·-·---------------------___J
Fig.34
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2)
Relation between the fixed blade
and
movable
knife
(left) edge:
(
l)
The standard position
is
illustrated as Fig.35.
(2)
The distance
between the fixed blade and movable knife is 0.3mm.
(3)
The correct position
of
fixed
blade bracket or fixed blade can be adjusted according to Fig.35.
®
0
3)
Knife driving shaft:
r
Fixed
blade
bracket
unit
(I)
The
standard position is illustrated as Fig.36.
(knife edge)
Fixed
blade
Fig.35
O.
Jmm
Movable knife (left)
0
0
(
2)
When assembling, the knife driving shaft must first
be
put through the drive ann.
(3)
Cam follower crank
1
must be positioned
as
illustrated
to
the right, and secured on the recess located on
the
knife
driving
shaft.
(
4)
The stopper must be secured on the recess
in
such a way that the knife driving
shaft
is snug and
smoothly rotates in the shaftdirection.
Cam follower
Coil
spring crank 1 Cam follower crank 2
e e
"
87.5mm
-. --
---
--------1
Knife driving Stopper
shaft
Fig.36
4)
Installing the thread trimmer solenoid unit (Fig.37):
(I)
Operation stroke
of
the thread trimmer solenoid:
a.
Standard operation stroke
is
6.0mm.
b. This stroke can be adjusted by using nut ''A''.
(2 ) Installing the unit:
a.
The unit canbe mounted by using screws
"B''
and
"C".
J3
b. Clearance
of
J
.0mm must be insured between
the
driving lever and cam follower crank 2 with
stopper nut "A"made contact with solenoid.
c.
In
such a situation, activating the solenoid should create a clearance
of
0.5mm between
cam
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

follower crank
I
and
2.
This situation
is
standard.
To
meet this standard, slide the solenoid mounting
bracket
in
the direction
of
the arrow as illustrated,
if
adjustment is needed.
6
mm
I
mm
Solenoid
mounting
bracket
Fig.37
0.5mm
5)
Installing the thread trimming cam
(Fig.38):
(I)
Face the 2nd timing mark
"A"
(GREEN)
located
on
the pulley
to
the matching mark on the ann.
(
2)
With the thread trimrner solenoid activated, rotate the thread trimmer cam forward until the cam makes
contact with the roller.
111en,
secure the cam.
(3)
With the thread trimmer solenoid deactivated, allow the cam follower crank 2 to return to its original
position. This should create a clearance
of
0.5mm-l.0mm between the cam and roller end .This distance is
standard. Matching
mark
A
cam
0. 5-
1.0mm
Hook
O.
~mm
shaft
/,l-
Ro
11
er~
I .
I
\0!
fol
lwer
crank
2/.
:l'\
,
'
Knife
driving
shaft
Fig.38
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

6)
Adjustment
of
lmife engagement (Fig.
J))
:
( 1)
Position
of
movable knife (left) and fixed blade:
See the Fig.39, the standard distances from the needle center arc 7.5mm and 5mm from the movable knife
(left) and fixed blade respectively.
(2 ) Adjustment
of
knife engagement:
With the solenoid activated, turn on the machine. This rotates the thread trimming cam which rotates the
movable knife (left). When
the
movable knife (left) has
moved to its farthest distance, the standard engagement
of
the blade is l.5mm-2.0mm. The engagement can be adjusted
by properly mounting the drive ann.
(
3)
Adjustment
of
knife engagement pressure:
a.
If
a thread is poorly cut, particularly when
it
is thick,
slightly increase the engaging pressure. This should solve the
problem.
b. The engaging pressure can be adjusted
in
this way:
Loosen lock nut
"B"
and adjust
it
by using adjusting screw
"A"
.
Fixed blade
Movable knife (left)
7.
Snvn
5mm
/
(a)
®
. I /
Knife driving crank
I.
5-2
.Qmm
Fixed blade
Movable knife (left)
Movable knife (left)
Fig.39
-------------------------------·
·
---
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

A.ARM BED AND ITS ACCESSORIES
53
0
.o·
0
52
'
a
"
0
0
10
171
18~
16
- 11 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

A.ARM BED AND ITS ACCESSORIES
.
~
~ =
Fig.
<
~
---
Part
No.
Description
1/)
,n
~
Remarks
No.
1/) 1/) 1/)
O's
O's
I I
O's
~
~
I
~
~
~
z
AO!
H3115B0721
Arm
cover(right) I I I
A02 HA06030080 Screw 2 2 2
A03 H2020M0069 Felt I I I
A04 H2020M0067 Felt 2 2 2
A05 H2020M0066 Arm oil box(right) I I I
A06 H2020M0068 Oil wick 1 1
I
A07 H2020M0068 Oil wick 1
I
1
A08 H2400J2010 Oil cap
I
1
I
A09 H2400J2020 Oiling felt 1 1
I
AlO
H3
I06B0671 . Face plate 1 I 1
All
HA300B2170 Screw 2 2 2
SMl
l/64(40)x9
A12 HA124B0711 Slide plate
I I 1
Al3
HA124B0713 Screw 2 2 2 SM3/32(56)x2.2
Al4
HA124B07!2 Slide plate spring 1 1
I
A15 H2000B2050 Screw 2 2 2
SMI
l/64(40)x6.5
Al6
H3100B2090 Needle plate 1
I
A16 H4500B2020 Needle plate 1
A17 H005008060 Spring washer
I
1 1
A18 H2009B0653 Leg
I I I
A19
H3
108B0692 Felt
I I I
A20 H3108B0691 Thread guide
I I I
A21
HA500C2070 Screw
I I I
SM9/64(40)x5
r,.,:,,:,
nr.~
'"'
~-JjU
;:screw
2 2 2 SM!1/64(40)x5.5
A23 H2000B2040 Cloth guide plate I I 1
A24 HAI06B0676 Screw
I
1 I SM9/64(
40)x6
A25 HAI06B0675 Thread guide I I I
A26 H2400B2080 Screw I
1
I SM3/l6(28)x
13
A27 H2400B2070 Thread guide
I
I
I
.
A28
H2000M0090 Oil cap I
I I
A29 H2000M0080 Felt 2 2 2
A30
H3
100G2230 Thread tension releasing pin
I I
A30 H4200G2010 Thread tension releasing pin(long) I
A30 H4200G2020 Thread tension releasing pin(short)
I
A31
H2504C65!0 Screw 2 2 2
A32
H3
111
B0704 Tension releasing lever I I I
A33 H31611B311 Screw I
I
I
A34 HA300B2080 Screw
I I I
SM15/64(28)x6.8
A35 H311 1B0702 Thread contro
ll
er spring I
I
I
A36 H322IB6819 Thread controller spring stop
I I
I
A37 H3248IBC21 Screw
I
I I
A38 H2504C0654 Thread guide
I
1 1
A39 H2504C0658 Nut I 1 1
A40 H3111B0703 Ser screw
I I I
SM3/32(56)x6
-
12
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

A.ARM BED AND ITS ACCESSORIES
~
;:,
=
<
~
Fig.
---
•n
in
Part
No
. Description
1n
in
....
Remarks
in
No.
°'
°'
°'
I I
i;.. i;..
I
i;..
~
~
z
A41
HAJJ5B7010
Stop disc I 1 I
A42 HA607B0068 Tension releasing spring I I I
A43 H2504C0657 Thread tension releasing plate I I 1
A44 H2504C0656 Thread tension disc 2 2 2
A45 H2504C0121 Thread tension re leasing pin
I
1 I
A46 HA310B0701
Nut
1 I I
A47 H3161 IB21 I Pin 1 1 I
A48 HA731
IC606
Screw 1 1 1
A49
H3
100B2070 Thread guide 1 l 1
A50
H3
1611B111 Tension bracket 1 1 1
A51
H2504C0013 Tlu·ead tension stud
I
1
I
A52 HA300B2170 Screw 2 2 2 SM11/64(40)x9
A53 H4205I0661
Arm
side plate 1
A53 H3107B0681
Ann
side plate 1 1
A54
H2000820
10 Rubber plug
I
A54 HA307E0674 Rubber plug
I I
A55 HA300B2170 Screw 5 5 5
A56 HA300B2160 Screw
I
1 1
SM!
l/64(40)x10
A57
H3
100B2060 Thread take-up l
ever
cov
er
I I I
A58 H2400B2100 Thread guide
I I
A58
H420680066
Tlu-ead tension complete
I
A59
HA70082060
Screw 2 2
Aull
H
•11/l
M
flJ
8l)
1
uu
wmctow 1
I
I
A61
H2000M0190 Sealing washer
I
I I
A62 H2000M0200 Gland I I I
A63 HA300B2170 Screw 5 5 5
SMl
1/64(40)x9
A64 H240082050 Oil guard
I I I
A65 H240082060 Plate for oil guard 1 I 1
A66 H311 1
80705
Plate spring
I I
1
-
13
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

B.ARM SHAFT MECHANISM
22
3
27~
21
k
28-
..
. r
16
29
20
3 2 1
-
14-
17
T
15
14
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

B.ARM SHAFT MECHANISM
E-s
;;;;,
=
<
Fig.
--
~
l£)
•n
Part
No
. Description •n
1£)
....
Remarks
No.
0\ 0\
l£)
I I
0\
~
~
I
~
~
~
z
BO!
H3!00C2110 Arm shaft I I I
B02 H2009B0743 Felt I I I
B03 H31133B104 Arm shaft bushing(left) I I I
B04 HAI00C2020 Screw I I I
SM!
5/64(28)xI0
BOS
H31122B204 Arm shaft bushing(middle) I I I
B06 HA105D0662 Screw 2 2 2
SMl/4
(40)
x4
B07 HA105D0661 Arm shaft collar I I I
B08 HAI 13D2112 bevel gear for arm shaft I I I
B09 HA108D0663 Set screw 8 8 8
SMl/4(40)x7
BIO HAI 12D3012 C-type ring I I I
Bil
H3100E2010 Feed and feed lifting eccentric I I I
B12 HA341 ID208 Slide block I I I
Bl 3 HA341ID308 Screw 2 2 2
Bl4
H2000C2040 Balance wheel I I
BIS HAII0D0672 Screw 2 2 SM15/64(28)xI2
B16 H3!00C2070 Hinge pin I I I
B17 H2009B0732 Arm shaft bushing(right) I I I
B18 HA300B2110 Rubber plug I I I
Bl 9 H3 100C2050 O
il
wick
I
I I
B20 H3100C2030 Oil wick I I I
B21 HAI00C2020 Screw I I I SM15/64(28)x
10
B22 H3100C2020 Hinge pin I I I
TV
• ~
'M1AA0'>f)
1 A
1
,,...
,
,
nA
♦
t
I
' .
. .
B24 H3100C2040 Slide lever I I I
B25 H4200C2060 Needle bar connecting stud I .
'
B25 H3100C2060 Needle bar connecting stud I I
B26 HAI00C2070 Set screw I I , SM9/32 (
28)
B26 H4206C8001 Screw I SM9/32
(28)
:
B27
H3
!00C2130 Arm shat1 oil packing stop screw I I I
B28 H3100C2080 Oil wick I I I
B29 HA105D0662 Screw I I
SMl/4
(40)
x4
B30 HA108C0663 Set screw I I
SMl/4
(40)
x7 ..
B30 HA307C0662 Set screw 2
SM!/4
(40)
x6
B3
1
H3
!00C2120 Oil wick I I I
I
B32 H4204C0651 Needle bar crank I
"'
B32 H3!00C2090 Needle bar crank I I
B33 H409050140 Screw 2 2 2
B34 H2017M0067 Bevel gear cover(up-backward) I I I
B35 H2017M0065 Bevel gear cover(up-foreward) 1 I I
B36
H31
122B104 Felt I I I
..
B37 H2009B073 1 Felt I I I
B38 HAI00C2020 Screw I I I SM I5/64(28)x10
B39 H20
11
!C206 Felt I I I
-
15
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com