ZOJE ZJ24028-1 User manual
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lVlANUAL
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81
ZOJE
SEW
ING
MAC
H IN E
CO
.•
L
TO
.
From the library of: Superior Sewing Machine & Supply LLC
IN
S
TRUCTION
MANUAL
FOR
POS
T-
BED
IN
DUSTRIAL
S
EWING
MACH
I
NE
This manual is prepared to permit the sewing machine to be
used
efficiently and for highest performance.
This machine is
post
-
bed
industrial sewing machine suitab
le
for sewing sboes,bags,capsandgeneral
leather works.
You
caneither select
1-n
.eedleor2-oeedle machine accordi
og
to your
type
of
works.
Being
eq
uipped withspring
return
reverse lever
rype
feed mechanism opener
type
vertical hook, and slide
type thread take-up provides perfect
uoif
omed
stitching.
- i
NDEX-
Specification
........
..
.........
.....
.................
.
.................................................................
.2
Main
parts
name
of
ma
c
hine
head
.................
.
..............................
..
...................
.
...........
3
L Preparation f
or
installation
of
machin
e
................
..
..........
.....
......
.
...............................
.4
1).
Place
of
installation
of
machine
..................
..
....................
.
........
,
...............................
4
2)
.How
to
mount the machine head
..
.
....•....
....
......
...
..
..
.......
..
...
,
......
.
.............
.
........
.
..
.
...
..
.4
3).
How
to
mount the motor..
.........
.
.........
..
..............
.
...........
.
...........
.......
.....................
.4
4). How
to
COillleet
the
motor
leverand
foot
pedal.••.•..•
.............•.
•••••.•.•.•.•.•..
.......•
••.•.•••••••...4
5). How to
moun
t the bobbin winder assembly
....
..
....
...
.....
...
....
.........
...
.......
..
............
..
....
.
.4
6).
!l
ow
to
mount
and
adjust
th
e knee lifter mechanism
..
.....
....
.........
...
..
.
...
....
.........
.....
...
......
.5
7).
How
to
mount
the
oil
pan.
..
...............................
.
..........
.
.....................
.
....•......
.
..........
6
8). How to mount the vibration
preventi.r.~
rubber
..
...
....
..
........
...
.........
..
.....
.
..
...
.......
..
..........
6
U.
Pr
eparation f
or
operation
..........................................................
.
...............................
7
I). Selection
of
thread
....
.
.........
...
.
..........
...
....
..
...
...
......
.........
....
........
....
.....
.
....
...
.....
7
2). How
to
attach the
oc
:edle
............
......
...
.......
..
..
.....
.
.......
....
...
...
......
..
..
..................
.7
3
).
How
to
lead the upper thread
........
.
.....
.......
................
.......
.....
.....
...............
...
.........
8
4
).
How to wind
the
lower thread on the bobbin
..
.
......
.
................................
..
......
....
.
..
......
9
5).
How to adjust the bobbin winder asscmbly
...
..:
.........
....
............
.
.......
.
.......................
IO
6)
.
How
to place
the
bobbin into the hook
.....
...
...................
........
...............
.
...................
11
m.
Bow
to operate
.....
.......
...
....
......
.........
....
..
....
,
.......
...
..
.........
......
.......
.
......
..
..........
.
l3
1).
Starting
to
sewing
.................
...............
....
.......
.....
.....
........................................
13
2).
Sewing over
........
.
......
...
.........
...
................
.
......................
.........
..........
.
......
....
13
IV. Stitching adjustment
....
.....
...
......................
...............
........
............................
......
..
14
1
).
Adjustment
of
stitch length
.................
..
....................
..
...................
..
...........
..
......
14
2).
Forward and Reversestitching
....
.
...
........
....
.....
.......
.................
.....
.........
..
....
........
14
3).
Adjustment
of
thread !etlsion
...
...
........................................................................
!4
4). Adjustment
of{ccd
dog height and pressure of
pre.sse;-
on
materials
..............
.
..................
17
5). Propef ti
ming
between
th
e hook
and
needle.
......
...
..............
....
...
..
........
....
...
...
....
.
....
...
18
6). Proper timing between the book and opener
..........
.
...................................
..
.....
....
......
21
7). Proper timing between the
feed
dog
and
needle
...
....
..................................................
22
V.
Cleaning
and
Lubrication
.....................
...
.................
.
.............................................
23
1).
Oeaning
...........................
..
.................
.
................................................
..
........
23
2).
Lub
rication
...
....
...................
.....
.............
..
.....
.
.................................
,..,
.......
......
23
3).
Gr
ease
.
...............
.........
.....
..........
........
....
......
..................
...................
.....
....
....
24
From the library of: Superior Sewing Machine & Supply LLC
• Specification and ma
in
pa
rts name
of
machine head.
•sPE
CI
FICATI
ON
Sewing materials
...
..
. Shoe
s,
Bags,
Caps
, and lealbcr
works.
Speed
... .
............
.. 3000
RPM.
Nudle
...........
...
....
OP
x S
(13
5 x 5)
Nudle
barstro
ke
......
33
.4
mm
(1
-5
/16")
Thread
take
up
.•..
.....
Stide
ly
pe
Stitch
le
nglh.
.......
....
0-Smm(0
-3/16")
Pres~cr
bar
stroke
.••.•.
8mm
(51l
6")
Pre~
fool.
•........
..
1-Nudle
......
Rollerfoot
(I)
(2)
(
';
\
,.,
(4)
(5)
(6)
(7)
(8)
(
9)
(!0
)
(II)
(12)
(13)
2
1-l'\eedlc(Ul6")RoUcrfoot
2-Needle(l/4")
Usual
foot
Spool pin
Oil
reservo
ir
(rig
ht
)
Balance wheel
Stitch regulating dial
Reverse lever
Post
Hook
po51
bolder
Hook
po51
cover plate(b
ac
k)
Hook shaft bracket
Slide
pl
ate
Nudle
plate
RoUer
fOOl
Thread
guide (needle
bar
)
Hook...
.......
....
....
.........
Vertical book wilh opener
Stitch lenglh adjuslment... Dial regulatOr type
Reverse stitching............ Spring rerum manual lacker
Post beigbt... ... .
..
... ... .
..
178mm(7")
Lubrication
•....
.
............
Manu
al
oiling, provided wilh
two
oil reservoir
at
arm
Oil circulation
...
.
.....
......
Auto roatic capillary action
wilh oilwicks
Knee
mecbanism...
......... U:ver
system
Table.......
...........
.
.....
~ON
"l
y
pe
Moto
r..
.......
...... ... ... .
..
Clutch motor(400W)
(14)
Needle
bar
(
15
) Thread guide (needle bar bushing)
{1
6) Pressabor
(17) Face plaic
(18) Thread tension regulator
(1
9)
Thread guide(ann)
(
20
)
Thread
take
up
lever guard
(
21
)
Presser
regulating lhumb
screw
(
22)
Thread take
up
lever
(23)
Thread
retainer
(
24
: Oil reservoir (lefi)
(
25
) Pre-tension
From the library of: Superior Sewing Machine & Supply LLC
• Main parts name
of
machine head
(1wo
Nee
dle
T
ype)
(i
} Spool
pi.o
(9)
Hook
shaft bracket (17) Face plate
(2
) O
il
reservolr(right) (10) S
li
deplate {
18
)
Thread
ltn.Si
on regulator
(3) Balance
whee
l (I I)
:>l
eedle plate (19)
Thread
gu
id
e (
upper
)
(4) S
ti
tch
regulating dial (12) Roller foot (20) Thread take uplever guard
(5) Reverse lever (
13
) Needle guide (21) Presser regulating lhumb screw
(6)
Post
(14) Presser
bar
(
22
)
Thread
We
up lever
(1)
Hook
postcover plate
(l
ower) (15)
Thread
guide (lower) (
23
} O
il
reservoir (left)
(8
)
Hook
post
co
ver
plate (
upper}
(16) TI!reod
contrO
Ucr
disc (
24
) Pre-tension
3
From the library of: Superior Sewing Machine & Supply LLC
* Preparation for installation ofma:;?
1ine
head
1 PREPARATION FOR INSTALLATION
OF
MACHINE
HEAD
1.
PLACE
OF
Il\'STALLATION
OFMACHJNE.
The machine should
be
installed on well-
leveled floor
in
order to ensure smoothoperat-
ing
of
your machine at high speed without
vibration.
2.
HOW
TO
MOUNT
THE
MACHINE
HE
AD
ON
TO
THE
TABLE.
Instal the hinge with screws, provided in
accessory, athole on the back
of
the bed and
hook to thehinge plate
of
the table, then the
head is seton the table.
3. MOUNTING
OF
THE
MOTOR.
+ The motor is mounted generally with bolts,
nuts, and washers as provided.
+
Set
the position so that the motor pulley and
balancewheel grooves are aligned straight as
shown in Fig. Forproper operation when
tl
1e
belt
is
inserted.
+ Then connect power supply cord and motor
cordexteaedfrom switch.
4.
H
OW
TO
CONNECT
THE
MOTOR
LEVER
AND
FOOT
PEDAL.
+
The
angle
of
the slope
of
the pedal can
be
important. It can make a
differen
~e
in
the
strengthnecessary to press the peda:.
+ Theremight
be
a slightdifferenceinoperator's
posture, butgenerally
30•-
40
• angel as shown
inFig. (
A)
is
consideredbest.
+ The treadle position shown in Fig. (B) wi
ll
be
difficult.
In
this case, adjust the length
of
the
connectingrod to suit the operator.
5. HOW
TO
MOUNT
THE
BOBBIN
WINDER
ASSEM.BLY.
+ Set the position
of
the bobbin winderassembly
provided inaccessory, to beinparallel with the
belt hole
of
the table, with the leverpushed in
operationposition.
• When
bobbin
winderpulley
will
comein contact
with
the
belt, flX
the
assembly onto
the
table
with twoscrews provided, as showniu Fig.
4
~~
Hinge
plate
Hinge
X l~
(B)
From the library of: Superior Sewing Machine & Supply LLC
• Preparation for installation
of
machine head
6. HOW
TO
MOUNT AND ADJUST
THE
KNEE
Lll'TER
MECHANISM.
•
The
knee
lifter mechanism IS employed
to
raise
and
lower
the
presser
bar
.
•
Mount
it
pr
operlyonto the table
by
following
method for
ea~y
operation.
•
lf
improperly installed.
the
operating action
will be heavy and tire the operator.
1) Place
of
mounting.
• Make a hole for knee lift
er
shaft brack
et
underneath
the
table
according
10
Fig.
Sho"'n.
2)
How
to
mount
(!)
Mount
the
knee lifter
shaft
br
ack
et v.·hile
the side
of
h
ole
for spring towards your side
as
sho
wn
in Fig.
(2)
The
other
side
of
the
knee
lift
er
shaft
bracket is
>Crewed
so
as
able to insert the
(3)
On
the
kn
ee
lifter shaft, mount the
kn
ee
lifterposition bracket, regulati
ng
rod bracket,
knee plate
bar
bracket,
and
spring
in
the
order
mentioned, then tighten respectively.
(
4)
Mount the knee liftershaft,
on
whi
ch
fixed
respective parts,
on
the shaft brr:ckel
(5)
After checking
up
all the parts e;.d inclina·
li
on
of
th
e
knee
lifter shaft. tighten the
shaft
bracket screws.
(6)
Th
e shoners
ide
of
knee pla
te
baris mounted
on
the
bar brack
cL
and longer side
of
the
bar
is
mounted on the knee plate.
(7)
The
end
of
spring is inserted into a hole
of
the
sh
aft bracket (front).
(8)
The
o
th
er
e
nd
of
spring is placed on
the
knee plate bar moving it.
(9) After mounting all these partS,
chec
k
whether
the
knee
lifter mechanism can
be
operated lightly.
Table
top
plate
line
of
knot
URe
r
.-.haft
Shaft brocket(fronl)
I Sllaft brocket
(bad)
1
K=c
hft•
r
r~tion
br..ckcl
!<no<
p!>!e b:l:
l=cltet
1
I
Rod
bracket
5
From the library of: Superior Sewing Machine & Supply LLC
~
Preparation
for
installati
on
of
machine
head
3}
Adjustm
ent.
(1) Place
of
knee lifter position bracket.
Since the position bracket
makes
standardize
the starting point of knee plate, tighten the
sc
rew
at
the proper position
so
that
the
stopper
of
position bracket
come
contact
with top underneath
of
the shaft bracket
(back).
(2)
Puo;ition
of
the knee lifter bell crank regulat-
ing
rod
and
its
bracket.
•
The
regulating rod mak
es
raise and down the
presser foot by
means
of
moving the bell
crank lever
up
and down.
+ While the presser foot do
w-ned,
adjust the
length (A)
loo
sening the regulating
rod
screw
so
that the rod and crank lever
conracts
with
as
show11
in
Fig.
7.
B
OW
TO
MO
UNT
TKE OIL
PAN.
Fit the oil
pan
with nails into the bole bored
in
the table so as
oot
to
comeinto contact with
the kneeliftermechanism.
8.
HOW TO
MOUNT
THE
VffiRATlO~
PRE\!Erli'TINGR
UBBF:
R.
6
The
vibration preventing rubber
is
used
to
prevent the machine from vibrating and
there-
by providesmooth operation
of
the machine.
Fit these rubber insulators properly at the
four
comers
of
the table as shown
in
Fig.
Remember, the machine
will
vibrate
if
these
are
not
mounted properly.
(!)
Holl
owout
four
corners
of
the table20rnm
radius and 13rnm depth to fit the rubber
insulato~.
• Be
sure
to give smooth
surface
to
"A"
where
hollow
out
is
made
.
(2) Nail the vibration preventing rubbers down
at the fourcomers.
K4
..
lif\<r
rcJU]ating
rod
From the library of: Superior Sewing Machine & Supply LLC
II. PREPARATION FOR OP
ERA
TION.
1.
SELECI"IO!Ii
OFTHREAD.
• For best results, usc high quality machine
thread.
• For upper thread use left-twistthread.
+
To
check whether a thread
is
lc
ft-twist
or
right-twist, hold the thread
as
shu
Nn
in
Fig.
and twist
t.IJe
thread held
in
the right hand
toward your side. If the thread
twi
st
becomes
loose,
the
thread
is
right-twist. and
if
the
thread twist becomes tight thethreadis left-
twist.
2. H
OW
TO ATT
AC
H THE
I';"EEDLE.
•
Dpx5
(135x5) type needle
is
recommendable
for general
usc.
• But select the needle size that meets the
requirements of the
meterials
sewn
and
the
thread
used
ForOneNeedle Type
(
1)
\VhiJe
the presser barlifteris
r.tiscd.
tum
the
balance
wheel
by
band
1:
: raise the
needle bar
to
its highest position.
(2) Move the roller foot
10
the
leftas sbown
in
Fig.
(3) Loosen the needleclampingscrew.
(4) Hold the needle
10
its
side with the long
grooveside (left).Then
insert
the needle
a~
deeply
it
will go intothe needle clamping
hole.
(5) Securely tighlell theneedle clamping
screw.
ForTwo Needle Type
(1) While !he presser bar lifteris raised, turn
the
balancx:
wbeel
by
band
10
raise
theneedle
bar
to
its highest position.
(2) Move the roller footiO
the
left&; shown
in
Fig.
(3) Loosen the needle clamping screw.
(4)
Hold the needles
so
that
ti:Je
two needles
side with the tong grooved (faces each
other).
and
insert
it
as deeply
as
it will go
!litO the needle clamping hol
es.
(5)
Securely tighten theneedle clamping screw.
I:
1
[
••
g-
-::.
n
a
"
&
2
(i
a:
c
-=-
~
,...
i
0.:
g
-.
c
c.
~
[?'
;>
n
n
~
c
~
i
• Preparation
for
operation
f
\~
I
'-
!
RoUer
fooo
~
\
e •
7
From the library of: Superior Sewing Machine & Supply LLC
* Preparation for operation
*When
using nylon
or
silk threads, the
lo
ops may be formed improperly
or
stitch
skipping may result due to the twise
of
these threads. In this case, observe the
condition
of
the loops and mount the
needle in a manner that the needle hole
would be positioned
in
a slightly oblique
direction.
3.
HO
W
TO
THREAD
T
HE
UP
PER
TH
READ
.
F
or
One Needle Type
(1) Raisethethread take up levertoits highest
positionturning the balance wheel
by
hand.
(2
) After
the
presser bat lifter is raised, move
the roller foot to theleft holdingdo,..nward
as per arrow shown in
Fig
.
(3}
Thread
in
the following order:
I Spool p
in
9 Thread guide
2 Pre-tension (Needle bar
3 Thread retainer
bu
shing)
4 Tension discs
10
Thread guide
(needle
bar)
5 Thread take upspring II Needle
6 Th:-ead guide (arm}
7 Thread take
up
8 Threadguide (arm)
*The
spool pin I with cross-shaped hole,
pre-tension 2 and thread retaine
-r
3
are
provided to prevent the thread from rwist-
ting,
so
follow as shown
in
Fig.
* The tension discs 4 consists
of
rwo discs,
pass the thread between these discs from
the right to the left.
*For the thread take
up
spring
5,
pass the
threadfrom the rightto the left.
*For the
take
up lever 7, pass it from the
right to
t.'le
left.
*For
the
needle 10, pass
it
from the l
eft
to
the
right
8
Needle
sectional
plan
&;;:.
--
v:y--
In
case
of
usual
thread
!Jl
case
of
nylon
&
silk
thread
From the library of: Superior Sewing Machine & Supply LLC
In
case
of
Two
Needle
Type
(I)
Raise the thread take up leverto
ih
highest
position turning dle balance wheel
by
liand.
(2)
tn
case
of
the
roller
foot.
itis
same
order
as
one
needletype did-move
the
roUer
fOOl
to
the
left.
(3)
How
to
tilread from
the
conon
standspool
(left).
L1 Spool pin (left) 6
Thr
ead take
L2
Threadguide up spring
(Upper) 7 Thread gui
de
L2"
"flueadguide (upper)
pin (right) l.8
Tak
e up lever
L3
Pre
-tension (upperho
le
)
(upper) 7 Thread guide
1..1'
Threa
d guide (upper)
pin (left) 9 Thread guide
lA
Thread
tension (lower)
regularor(upper)
LIO
Needleclamp-
L5 Thread controller ing (back)
disc (back)
Lll
Needle(left)
(4) How
to
thread from
the
cotton
sl!l~d
spool
(right).
R1 Spool pin(right) 7 Thread guide
R2 Thread guide (upper)
(lower)
R8
Take
uplever
R3 Pre-rension (lowerhole)
(lower) 7 Thread guide
R4 Thread tensi
on
(upper)
regulator (lower) 9 Thread guide
RS
Threadcontroller (lower)
disc(fro
nt
) RIO Nccdleclamp-
6 Thread
take
up ing(front)
spring
Rll
Needle (right)
*
To
the
pre-tension 3 a
nd
tension regulator
4 thread betw
ee
n thesediscs.
*
To
the two needles 11., Thread from the
inside to outside.
4. H
OW
TO
WIND
THE
LOWER
THREAD ON
THE
BOBBII'\.
(I)
Thread from the spool
rlHOUgh
th~
hole
of
the threadguide 1 to the tensior. discs 2.
(2) Wind the
end
of
the thread through
t.'le
tension discs 2
on
the bobbin about 5
-6
times.
(3) Fit
the
bobbin intot.'le bobbin pin 3 in a
manner so that
the
thread
can
be
wound
on
the bobbin from
the
underside.
(4) Push the lever toward the otherside so that
the pulley
and
the belt will engage.
(5) Operatethe machine
so
that
the
thread
can
be wound
on
the bobbin.
(6)
The
bobbin winder will automatically
be
free from
th~
belt when
1M.
bobbinis fully
wound with thread, and stopped.
• Thisoperation
ca
n bedonewhileworking.
* Preparation for operation
9
From the library of: Superior Sewing Machine & Supply LLC
QJ·
·
IDJI
=--
!tit:
!liL~:!:J
JJ»!JNiiiYUl!:J
Ull-
"'8,
* P
rep
arat
ion for
op
era
tion
5. HC)W
1'0
AO
Jt
l!':T
THF.llOllR
TN
WT
Nm
;R
ASS
~ID
L
Y.
• It is
desi
rable
that
the bobbin
is
wound
evenly
with
thread
as
shown
in
Fig.
{A
).
but
Fig.
(B) & {C) shown are
no
t proper winding.
•
Ac!just
the bobbin
"ind:r
assembly
in
the
fo
iiowing order so as
ab
le
to
wind
th
e thread
onto
the
bobbin
!'[Operly
I) Incase
of
un
even winding.
• Intheevent
of
une'eo
v.oi.nding
toward
thele
ft.
loos
en the scr
ew
{A)
of
the thread guide,
and
adjust it moving the thread guideslightly to
the
right
•
1n
th
e
event
of
uneven v.inding
toward
the
right.
adj
ust it
movin
:' theguide
tO
th
e left.
• After
adjusteLI,
tighten
the:
sere"
(A)
of
the
thread guide.
2)
Wi
ndi
ng
st
r
en
g
th
of
thr
e
ad
.
• When the thread {Particularly
nyl
on thread)
is
wound too tightly. there
io
a tendency to
unwind
the
thread ona bobbill.
+ in ibis case adjust the pressure
of
tension
discs
with nut (B) so that thread can
be
pulled
out smoothly.
3) Wi
nding
amount
of
thread
.
•
B~
t
results
are
ob
~ed
when
the
bobbin
is
wound
up
to 4/5
of
its
fuJI
eapaciry with
t
hr
ead. Excessive will
ding
will
resu
l
ts
ill poor
pull-out
of
the thread.
•
In
tbe event
of
excessive "inding,
turn
the
screw (C) to the l
eft
aod
to
the r
ig
ht when
illsufficient.
10
0
®4li
Thludgui
~
(AdjU$l
by
s!idinl, ngbt
or
ltft)
From the library of: Superior Sewing Machine & Supply LLC
6.
HOW
TO
PLA
CE THE
BOBBIN
INT
O THE
HOOK.
In
case
of
One
Needle
Type
(I)
Raise
the
needle
bar
to
its highest position
turning
the
M!ance wheel by
hand.
(2) Move
the
roller foot
to
the
left
1:1.
shown
in Fig.
(3)
Move
the
slide p
la
te.
(4) Turn up
the
lau:h leveras
sh~\\'!1
inFig.
(5) Pull thebobbin thread
fot
about 5
em.
bo
ld
it like
in
the illustration.
(6) Fit
the
bobbin. into the hook
base.
(7)
Aap
down the latch
le
ve
r.
(
8)
Insen the pulled out thread end through
the slit
(I)
in
the book
body.
(9)
From
the slit(1)
pass
thethread
underneath
thehook
body
(2), and pull
it
to
the right
diagonally,
and
thethread will
pas.-
tlu'ough
tension spring.
(1
0) Leavethe end
of
thread insened
through
to
thetension spring
as
it
is.
(11)
While holding the
end
oftrpper
thread
by
left
hand.
rum the
balance
wheel slowly
once around
by
right hand.
(12)
Then
theupper thread
will
hook
out
the
lowerthreadsimultaneously through the
hole
of
needle plate, and leavethelower
thread
to
otherside
of
the needle plate.
(13) After placing the bobbin, close
the
slide
plate.
•
Preparation
for
ope
r
at
ion
il
From the library of: Superior Sewing Machine & Supply LLC
• Preparation for operation
In
case of
Two
Needle Type
(I) Raise the needle bar to its hlgbest position
turning
the
balancewheel by hand.
(2)
l.o
the event
of
theroller foot
is
attached,
move
it
to the le
ft
as
shown
in
Fi
g.
(3) Move the both slide plate.
(4}
Tum
up the both
of
the latch lever as
shown in Fig.
(5) Pull
out
the bobbinthreadfor about 5 em.
And hold the bobbin.
(6) Fit the bobbin into the both hook base.
(7) Flap down the both latch leveras it was.
(8}
lnsen
the pulled thread end through slit
(I
)
of
the hook.
(9) From the slit
(l
)
of
the hook, pass the
thread through
un
derneath
of
the book
body
(2
),pull theleft thread to the l
eft
and
the right threadto the rightdiagonally and
the thread
will
pass through the tension
spring as shown in Fig.
(10) Leave theend
of
the
thread
insetted
through
!be
tension spri.ng
as
it
is
.
(
11
) While bolding the end
of
2-upper
thread
by
left hand, turn the balance wheel slowly
oncearound byright hand.
(
12)
Then the 2-upper thread will 1
<>
vk
out
pulling the iower thread simuiianeously
through the hole
of
needle pla
te
, and leave
the lower thr
ead
to
the
oth~r
side
of
the
needle plate
as
shown
in
Fig.
(13) After placing the bobbin, close the both
of
the slide plate.
12
From the library of: Superior Sewing Machine & Supply LLC
Ill
HOW
TO
OPERATE
I.
STARTING
TO
SEWING.
(I)
Raise
the
presser
barlifter.
(2) Move
back
the
roUer
foot
towaitl
your
side
as
sh0'-1<1!
ill
Fig
.
By
th<:>
ar:row.
(3)
Place
starting
end
of
the
marerials
fN
stitching
under
the
needles.
(4)
Tum thebalancewheel
by
hand
toward
your
side
so
lhat tile
needle
stitche;
he
materials.
(5) Lower the press
er
bar lifter
and
start
to
sew.
• When starting to sewing, leave the upper
thread pulled out
by
approx. 1Ocm
in
length
so
that it will
not
pull out from
needle.
2.
SE
WJNG
OVE
R.
( I) Stop
sewing
when
the
take
up
lever
comes
to
its highestposition.
(2)
Raise
the
presser (roller or ordinary) foot.
(3)
Pull
out
thestitched fabries diagonally
to
the
left side.
(4)
CUt
bolh
upper
aod
lowerthread.
• When cuiiingthe thread leave out approx.
1
Ocm
length
so
that next starting sew is
convenient foryou
•
Preparat
i
on
for
ope
r
atio
n
13
From the library of: Superior Sewing Machine & Supply LLC
• Stitching Adjustment
IV
.
STITCHING
ADJUSTMENT
.
1.
ADJUSTMENT
OFSTITCH
LL"IGTH.
• Stitcllleogthcan beadjusted with the stitch
regulati
ng
dial.
• Figures on the stitch regulating dial
i:;.!lica
tcs
th
e length inmm.
~'ben
the dial number
is
seton
!he
pin
of
the
arm
it will give your
de-~ired
stitch length.
2. REVERSE STITCHING.
•
Reve=
stitching can
be
opetated
by
means
of
pushing
the
reverse
leverdownward.
While
the
lever is pressed downward, reversestitching
can
be
made.
3.
ADJUSTME:'IT
OF
THREAD
TENSION.
• Thethread tension varies according to
the
type
of
materials
to
be sewn, or
thread
used,
and
the
length
of
thestitches required,
so
adjust the
tension accordingly.
•
If
theupper and lower thread tension a
-e
-.-ell
balanced, the
two
thread
will
link
tag<-lher
in
the
middle of the fabrics to provide perfect
chain·like stitches (A)
as
shown
in
Fig.
•
If.
either
the
upper
or Lower thread tension
is
too
tight, ortoo loose, it
will
giveimperfect
stitches such
as
(B)
and(C)
as
shown in Fig.
•
Fig.
(B) shows
the
upper
thread
tension is
too
tight,
and
Fig.
(C) theupper thread tension
is
too
loose.
• Tension
of
upperthread.
Adjustment
of
th
e
upper
thread tension can be
achieved
by
changing the pressure
of
the
tension discs
of
the regulator,
as
well
as
the
strenglh and operating range
of
the
!bread
take-up spring.
In case of One
Needle
Type
I) Pressure
of
the thread tension discs.
• For gener
al
fabric stitching, the desired
tension can be obtained just by adjusting
the
pressure
of
the tension discs.
• To strengthe, tum the thread tension nut
to
the right.
• Toslacken,
tum
to the left.
14
0
®~
X®
[{!@F®ffi«@@!m!!
X©
®t®t®t®t®f®t®g
From the library of: Superior Sewing Machine & Supply LLC
In
case
of
Two
Nee
dle
Type
+
To
strengthen
the
pressure
of
thread
teosion
discs, tum thetherad tension nut to the right.
+
To
slacken, tum thetension nut to theleft
2)
Streng th
of
the
thread take up spring.
+ Adjust the strength
of
the
take·'l'i' spring
according to the materials to
\J.e
stitched.
• Standard
ma
terials
...............
approx. 25g.
• Light
maJeri.al.s
(small stitch length)
+ Heavy materials (large stitch length}
strengthen the spring
............
approx. 30g.
+
How
to adjust.
(1) Leavethe pres
ser
bar
lifterdO\\'D.
{2) Remove
the
face
plate.
(3) Loosen the small screw inside
of
the face
plate as shown
of
the upper thread tension
regulator (one needle type)
or
of
the thread
tension controller(two needle
I)
pe).
(4
) Fit the screw driver into
the
groove
of
the
thread tension srud.
or
thread controllersrub,
and rum the stud
to
the left
!0
strengthco.
and
!0
lbe right to slacken.
(5) After adjnsted, tighten
the
small screw and
putthe face plate backon.
• Stitching adjustment
lin
<0$0 of
One
Ne<dle
T
ypc:
)
(
In
cacofTwo
Ncodle
Type:)
IS
From the library of: Superior Sewing Machine & Supply LLC
• Stitching Adjustment
3) Operating range
of
the lhread take
up
spring.
+ lo order
to
obtain proper working condition.
it
is
necessary to
adjuSt
the strength
of
the take
up spring
as
well
as
change the operating
range
of
the
take-up spring.
+ Theoperating
range
can
be
measuroc'
when tlle
take-up lever is at the highest
{'1
Sition, and
when the upper thread is pulled, and
the
tension spring mov
es
within
the width
of
BIIllll.
it
is
considered as standard.
• In case
of
standard (general fabrics) materials.
......
approx. 8nun(5/16")
• Incase
of
light(small stitch length) materials,
increase
the
operating range slightly
.........
..
....
approx. 8mm(5/l6")
or
up
• In case
of
heavy (large stitch leng
th)
materials.
decrease the operating range slightly
.........
..
....
approx. Smm(S/16") orless
• How
to
adjustment(One Needle Type)
(
I)
Lower the presser bar
lh"tcr.
(2)
Loosen the thread tension regulator
ut
screw.
(3)
Fit the screw driver into the grucve
of
the
tension regulator srud;and rum thesrud to the
right to small the operating range.
(4) Turn tlle srud
to
the
leftto largetlle operating
rang.
(S) After adjusted, tighten the screw.
• How
to
adjust
(Tow Needle Type)
(I)
Loosen thethread controller set screw.
(2)
Fit the screw driver into the groove
of
the
thread controller sllld. and rum the srud to
the rightto small theoperating
ranr,.
{3)
Tum thesrud to
the
lefi to
r:arge
the operating
range.
(4) After adjusted, tighten thescrew.
16
I
I
I
I
I
I
I
I
I
I
I
I
(f
From the library of: Superior Sewing Machine & Supply LLC
• Te
ns
ion
of
lo
wer thread.
There isvinually
oo
need
to
adjust
!he
lower
!bread
1ension,
exceptfor special kind
of
fabrics
or
thread.
when
slightadjuslment will
be
necessary.
(I)
Turn !he balance wheel byhand, and stop
when
!he
!hread
!alec-up
lever
comes
down
:o
i:s
lowest
position.
(2) Move !he slide
plate
so !hat
you
find !he
thread tension
screw
of
!he hook
base.
(3)
Fit
!hescrew driver into
!he
bole (A)
of
the
book
shaft
txaclcet
as
shown
in
Fig.
Tum
the
tension screw to the right to strengthco !he
lhread tension.
(4)
Tum
!hescrew tothel
eft
to
w~en
the
!hread tension.
4. ADJUSTMENT
OF
FEE
D DOG HEIGHT
AND
PRESSURE OF
PRF
-SS
ER
ON
MATE-
RIALS.
The
feed dog height and pressure
of
presser on
materials must
be
properly adjusted according to
the
materials
to
be
sewn.
• In case
of
ligb1
materials:
The
mzterial
may
be
damaged
if
tbe
feed
dog
is
raised
excessively
or
!he
pressure
of
presseron materials is too strong.
• In ease
of
heavy materials:
It
will
not
make
uniformc stitching if the
feed
dog is not raised
properly or
the
pressure
of
presser
is
too weak.
In
case
of
light materials
...........
...
.........
.
..
..
...........
approx.
0.8mm
in
height
Incase
of
general fabrics
......................
..
..........
.
....
approx. l.Onun.
in
height
Incase
of
beavy materials
...................
..
..........
..... approx.
1.2mm.
in
height
• The height of feed dog Ismeasured when
the
feed
dog
is raised to itshighestposition
from the surface
of
needle plate turning the
balance wheel by hand.
1)
Adjustment
of
feed
dog
height.
(1) Lay
down
the machine
bed
toward the
otherside.
(2) Remove
the
gear box.
(3) Tum
lhe
balance
wheel
by
band
and stop
when the feed dog
is
raised
to
its ilighest
position
from
the surfaee
of
needle plate.
(4)
Loosen
the
screw
of
feed lifting rock shaft
crank.
(5)
Ad
ju
st
the
feed dog to the desiredheight
moving
tbe
feed
lifting rock shaft crank
back
and
forth
as
per
an
arrow
,:l:owo
in
Fig.
(6) After adjusted, tighten
the
screw
of
feed
liftingrock shaft.
• Stitching
adjustment
17
From the library of: Superior Sewing Machine & Supply LLC
• Stitching Adjustment
2)
Adjustment
of
pressure
of
presser
fool
(I)
Tum
the
presserregulating
thwnb
screw
to
the right
to
strengthen
the
pressure
of
presser
foot
(2)
Turn
the
screw ro the left to loosen the
pressure
of
presser
fooL
S.
PR
OPER
TIMING BETWEEN THE H
OOK
AND
E\NEEDLE.
Place
and
adjust the
hook
in
the
condition
de
-
scribed below in case
of
the
thread gets entangled
in
the
hook,orwhen its position ischanged
due
to
shoc
k.
or
othercauses,
or
when
it
is replaced with
new aone.
1) How
to
remove the
hook
(
I)
Tum
the
balance wheel
by
lwtd
and
stop
when the thread
£alee
up
lever
comes
down
to its lowest position.
(2) Remove the slide plate, then take out the
bobbin.
(3) Remove the needleplate.
(4) Remove the
hook
cover plate (front) (In
case
of
two needle
type,
remove the hook
coverplate(upper) both the front and back.)
(5) R
emove
the
hook
opener
screw, and theo
remove
the
opener.
(6) Loosen the
hook
g:ib
screw
and remove the
hook gihfixed in front
of
the
hook
body
as
shwon in
Fig.
(7)
Hold
the
latch lever up turning it slightly
so
that
it
can
be
ta.l,:en
out.
(8) Remove !he hook body
<:enter
set
screw
so
that it
can
be
take
n
out
18
From the library of: Superior Sewing Machine & Supply LLC
2)
How
to
place
the
hook:
(I)
Place
the
hook
in
backward order
from
removing
procedure.
(2)
When
placing the hook body, rememberto
plac
e
it
at
th~
sw.e
position
as
it
was
Eaken
out
(3)
Whe
n inserting
the
hook base
bold
the
book
base cap ruming
it
to
tbe
left as shown in
Fig.
And
fit
the hook basebrim
into
s
lot
of
the
hook
body
on
the
inside
of
the other
side.
(
4)
When
placing the needle plate, place the
needle plate adjusting tbe hook
base
so
that
the
tip
of
hook
base
fits
in
to th
e
boo!..
finger
of
the
needle plate
as
shown
in
Fig.
The
position
of
the
hook
and
needle:
A~
shown in
tbe
Fig
.
When
the needle
raised
is
2.0mrn
from
its l
owes
tposition
of
Ihe
need
l
e,
the hook
and
needle should
be
as
foUows.
+ Upper part
of
t
he
needle hole
................
..
......
Lower by
1.6mm
from the tip
of
book.
+ Tip
of
book
...............
At
center
of
needle.
+
Ga
p between tip of book and lateral
face
of
needle
.....................
by 0.05mm.
Adjustm
ent
of
the
1-cla
tive position
of
the
hook
and
needle can
be
done
as
follows:
• Move the roller fo
ot
to
the left, remove the
needle plate for
easy
ad
justm
ent
• Stitching adjustment
Hook
base
cap
Hook
bas<
brim
i
I
Hoot
bob)
I
Centcr
of
1
5
·~·
l
19
From the library of: Superior Sewing Machine & Supply LLC
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1
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