Global WF 1767-70 Series Parts list manual
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
-----CONTE
NTS-----
1.
PRECAUTIONS
BEFORE
STARTING
OPERATION
.................................................................................. !
I)
Safety
precautions····..·····............................................................................................................................... 1
2)
Precaution
before
Start
ing
Ope
ration
....................:................................................................................... 1
3)
Precaution
for
Operating
Cond
itions......................................................................................................... !
2. S
PECIFICATIONS
·······..···................................................................................................................................... 1
3.
PREPARATION
BEFORE
STARTING
TO
OPERATE
................................................................................ 2
I)
Connection
of
control
box
............................................................................................................................ 2
2)
Oil
pan
............................................................................................................................................................. 3
.3)
Operation
panel
....................................................................................:........................................................ 3
4)
Adjusting
the
nee
.
die
stop
position .............................................................................................................. 3
5)
Lubrication
..................................................................................................................................................... 4
4.
HOW
TO
USE
THE MACHINE ........................................................................................................................ 5
I)
Threading················........................................................................................................................................ 5
2)
Adjust
ing
of
the
thread
regulator
.........................................................;.......
..
............................................ 5
3)
Adjusting
of
upper
thread
tension..........................,................................................................................. 5
4)
Winding
the
Io,ver
thread··
..····..................................................................................................................... 5
5)
Threading
the
lower
thrend
..........._.............................................................................................................. 6
6)
Adjusting
the
lower
-
thrend
tension·............................................................................................................ 6
7) l
nstnlling
the
needle.............:......................................................................................................................... 6
8)
Alternati
ng
presser
foot
1nove1nent
amount
.............................................................................................. 6
9)
Adjusting
the
presser
foot
pre
ssure..
........................................................................................................ 7
I
0)
Adjusting
the
stitch
l
ength
........................................................................................................................... 7
II)
Using
the
111nnual
switches........................................................................................................................... 7
12) Clenning······..·····.............................................................................................................................................. 8
13)
Lubrication
....................................
_.
......................................;...............................:......................................... 8
14)
Adjusting
the
tra
iling length
nfter
thread
trimming
................................................................................ 9
15)
Back
ta
cki
ng
................................................................................................................................................... 9
16) Adjus
ting
the
feed
dog
.................................................................................................................................. 9
17)
Adjusting
the
needl
e
bnr
height
.......................,........................................................................................... 9
.i
18)
Adjusting
th
e
gap
between
the
needle
nnd
the
rotary
hook
tip.........:.................................................. 10
1
9)
Adjusting
of
the
nee
dle
and
the
hook
timin
g........................................................................................... 10
20)
Hook
protection·
..·····..···................................................................................................................................
11
21)
Adjusting
the
needle a
nd
feed
mechani
sm timing...................................................................................
11
22)
Adjusting
the
opener
position.....................................................................................................................
11
23)
Adj
u
sting
the
presser
foot
heig
ht
.............................................................................................................. 12
24)
Adjus
ting
the
alternating
presser
foot
movement
amount
................................................................... 13
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25)
Adjusting
the
pr
esser
foot
timi)1g..............................................................................................................
l4
26)
Adjust
ing
the
fixed
knife
position...........................,................................................................................. 14
27)
Ad
ju
sting
the
thread
holding
spr
ing position ......................................................................................... 15
28)
Adjusting
the
knif
e
timing
position .......................................................................................................... 15
29) Adjusting the
driving
kn
ife
height
............................................................................................................ 15
JO)
Adjust
i
ng
th
e
driving
kn
ife
stop
po~ition................................................................................................. 16
.3
1)
Adjusti
ng
the
driving
knif
e
operating
position....................................................................................... 16
32
)
Adjusting
the
thread
trimming
tiinin
g·
....................................................................................................
17
JJJ
Safety
clut
ch ................................................................................................................................................. 17
J4J Regulate the
atmo
s
pheric
pressure...........................................................................,
......................
18
-----
PA
RTS LIST -----
A.
ARM BED AND ITS ACCESSORIES............................................................................................................... 19
B.
THREAD TENSION
REGULATOR
MECHANISM...................................................................................... 23
C.
SEWINGMECHANISM .................................................................................................................,................... 26
D.
PRESS
ER
FOOT
MECHANISM
..................................................................................................................._....
30
E.
UPPER FEED
LIFTING
ROCK
SHAFT
MECHANISM.............................................................................. 34
P'.
STTTCH REGULATOR MECHANISM............................................................................................................ 38
G.
FEEDING AND
FEED
LIFTING
& ROTATING
HOOK
SHAFT
MECHANISM................................... 40
H.
HOOi(
SADDLE
MECHANISM
(RIGHT)......................................................................................................
43
I.
HOOK SADDLE
MECHANISM
{LEFT) ......................................................................................................... 47
J.
OIL
LUBRICATION
MECHA
N
ISM
................................................................................................................. 51
I<..
ACCESSORIES·..
··
................................................................................................................................................ 54
L.
PNEUMATIC
CONTROL
UNIT
......................................:................................................................................. 56
GAUGE PARTS
LIST···
···......................................................................................................................................... 59
.)
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
1. PRECAUTIONS BEFORE STARTING OPERATION
1) Safety precautions
(I)
When
turning the power
on,
keep your hands
and
fingers away
from
the area around/under
the
needle
and
the
area around the pulley.
(2) Power must be turned offwhen the machine
is
not used, or
when
the operator leaves his/her seat.
(3) The power must be turned offbefore tilting the machine head,
installif1g
or adjusting
the
machine, or
when replacing.
(4)
Avo
id placing fingers, hairs, bars
etec.
nears the
pulley,
bobbin
winder
pulley,
when
the
machine is
operation. Injury could result.
(5) Do not insert fingers into the thread take-
up
cover, under/round the needle,
or
pulley
when
the
machine
is
in
operati
on.
(6)
If
a
mini
motor cover, finger guard, and/or
eye
guard are installed,
do
not ope
rate
the
machine
without these safety
dev
ices.
2) Precaution before starting
op
eration
(!)
If
the
mach
i
ne's
oil pan has an oil su~p, never operate the machine
befo
re filling
it.
(2)
If
the machine is lubricated
by
a drop oiler, never operate t
he
machine before
lubr
icating.
(3) When a
new
sewing machine
is
first turned
on,
verify
the
rotational direction
of
the
pulley with the
power on. (The pulleyshould rotate counterclockwi
se
when
viewed
from
the
pulley.)
(4)
Verify
the
voltage and (single or three) phase
with
those given
on
the machine namepl
ate.
3) Precaution for Operating Conditio
ns
(])
Avoid
using the machine at abnormally high temperature
(35
'C
or
hi
gher) or
low
temperatures
(5
'C
or
lower).
Otherwise, machi
ne
failu
re may resul
t.
(2)
Avo
id
using the machine
in
dusty conditions.
Avoid
using
the
machine
in
areas
where
too
much
electri
cal
noise, resulted
from
the high-frequency welder
and
others, is generated
2. SPECIFICATIONS
Item IWF1767-70
p.
I
AUT :I
WF
1767-2-
70
I
P·AUT
Max.
Speed 2400r
pm
2400rpm
St
i
tch
length
0
to
9mm
0to
9mm
Needle barstroke
34mm
34mm
Presser foot By hand
9mm
9mm
clearance
By
knee 16
mm
16mm
Rotating hook Large vertical hook (2.5times) Large vertical hook
(2.5
ti.mes)
Needle DPX
17
#
18-#25
DPX
17
#1
8-
#
25
Presser
foot
alternation
1-7111111
1
-7mm
Auto presser
foot
lifter Pneumatic Pneumatic
Oi
l lubrication method Automatic lubrication Automatic lubrication
Bed dimensions 710X
140
mm
?!OX
140
mm
Needle gauge
(mm)
3.2
6 8
10
12
16
I -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Ifsewing with stitch length
of
6
lDl\l
<Ol' more, set the sewing speed to 1600 rpm
or
less.
3. P
REPARATION
BEFORE
STARTING
TO
OPERATE
1) Connection
of
control box
It
shows
the connection
of
the electrical wires
of
the
whole
machine
on
the right picture.
When
the machine needs
to
be assembled,
each
lin
e should be linked to
the
right joint
according to
the
instruction
of
the pi
cture.
windp
ipe
of
MP
All
the
pins on the control box have signals
of
function ·showing::
and
usually,
different wires have different
kinds
of
joint.
Caution:
the pin
of
synchronizerwire is the
same
with
another two external pins and
if
there
is
a misconnection, the synchronizer .
might
be
burn.
si
_gna
I I i
ne
of
motor
sy
n
chronizer
wire
pedal
si
gnal
I i
ne
of
connection
board'it;~l_
5
,:,
..
-
When
connecting the pipes, please check
the
joint at the picture
of
the
whole machine aboveas reference.
And
also there have an
insh·uction
mark
of
each joint
of
the
solenoid
at
the setti
ng
board.
-2
-
power
input
I i
ne
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
2) O
il
pan
(I)
Install the
oil
pan
3
to
the underside
of
the
worktable 1
in
the
pl
ace
shown
in
the illustration using
the
na
i
ls
2.
(2)
From
front view,
the
oil pan 3 to the side
is
60mm;
from
right view, the oil
pan
3
to
the side
is
80mm
.
3) Operation panel
(1)
1.nstal
I the operation panel I to the
set plate 2
with
the three screws 3.
(2) lnstall the setplate 2 to the back
of
t
he
machine arm with the
two
screws 4.
4) Adjusting the needle stop position
(1) Adjust
in
g
the
needle up stop
posit
ion
1
2
3
4
When
the
_sewing machine stops
in
the
needle
up
stop
position
(the
stop position
of
trimming) and the
treadle
is
pressed back, the red mark
on
the
pu
l
ley
shou
ld
be
consistent
with
the
mark
on
the
belt cover A.
Adjust
as
follows:
a.
Turn offthe power
sw
itch.
b.
Loosen
the
screw 4, and then remove
the
cover
3.
- 3 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
c.
When
the
red
mark stops in a position over
the
mark
on the
be
lt cover, the needle
up
stop
pos
i
tion
disc l
should
be
turned
in
the
opposite direction
as
the
direction ofmachlne pulley rotation. When
the
red
mark stops
in a
pos
i
tion
under the mark on the belt cover, Turn the disc 1
in
thesame
di
rection as the pulley rotation
di
rection.
~~--<
;,~
t:.~~--~;''·.'"~''"'-'"",:
.....
,
--.,,.•·:---·•.·
...
"'·;,'
( 2) Adjusting the needle down stop position
When
the sewing machine stops
in
the needle down stop position, the black mark on the pulley should be
consistent wi
th
the mark on the belt cover A. Adjust
as
follows:
a.
Turn offthe power switch.
b.
When
the black mark stops
in
a position over the mark on the
belt
cover, the needle
down
stop position
disc 2 should be turned in the opposite direction
as
the direction
of
machine
pulley rotation. When the black
mark
stops
in
a position under the mark on
the
belt
cover, Turn the di
sc
2
in
the
samedirection as
the
pu
ll
ey
rotati
on
directi
on.
c.
After adjusting, install the cover
3,
with
screw 4.
Note: There is no n
ee
d to loosen thescr
ew
5, when turning the discs.
5)
Lubrication
Before the new machine
is
used, please loosen the screw 2
and full t
he
oil
into
the oil case. Setthe oil level between
"EMPTY" and "FULL". Then replace oil-fillingscrew 2.
-4-
2
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
4.
HOW
TO
USE
THE
MACHINE
1)
Thr
ea
ding
Ra
i
se
the thread take
-u
p lever
to
its
highest position and thread
the
upper
thread in
the
follow
in
g order.
•i
;
2)
Adjust
in
g of
th
e thread regulator
The thread regulator 9 (see
the
right picture) regulates
the
amount of needle thread
necessa1y
for stitch
fo
r
mation.
The setting depends on the following factors: material
th
i
ckness,
yarn characteristics
and
sti
tch
length.
The
th
r
ead
regu
lator
is
fitted
with
slots for t
hi
s purpose. Moving
in
the
"+"direction increases the quanti
ty
ofneedle thread; Moving in the "-"direction reduces the quantity
of
needle
thread,
3) Adjusting
of
upper thread tension
0
.~
switch
X
~
is t
oo
strong
or
l
ower
th
read is too weak
X
~
In case upper lhread
is
too
weak
or
lower
thread
is
too
strong
Tension should
be
as
low
as
poss
ibl
e.
The crossover point
shou
ld
be
in
the center
of
the material. Upper
t
hr
ead
tension
can
be adjusted
by
thread tension nut 4
and
5 (see the pi
cture
of
above). Turn the thread tension
nut
clockwise
to
increase the needle thread tensi
on.
Turn
the
thread
tension
nut counter-clockwise
to
decrease
the
needle thread tension.
4) Winding the lo
we
r thread
(I) Place the bobbin onto the bobbin winder shaft.
(2)
Pass
the
thread
for
w
in
di°ng
thread as shown
in
the
figure, Md wind the
end
of
th
e
th
read clockwise
around the bobbin several times.
(3) Pu
sh
the
bobbin presser I toward
the
bob
bin.
(4) The operation w
ill
automatica
ll
y stop
when
winding
is
complet
ed.
The amount
of
th
r
ead
wound
on
to
the
bobbin sh
ou
ld be a
max
i
mum
of
80%
if
the
bobbin
cnpacity.
-
5-
2
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
(5) After
the
thread
has
been
wound
·
on
,
remove
the
bobbin and cut
the
tluead
with
th
e thread-trimming knife
2.
5) Threading the
low
er
thread
(I)
Ra
i
se
flap
I
and
remove
the
e
mpty
bobbin
.
(2) Insert
bobbin
2
in
such a way that
when
the
thread is unwound
from
it
moves
in
the opposi
te
direction
to
the gripp
er.
(3)
Pass
the
thread through sl
it
3
and
below
spring
6,
pass
the
thread through
sl
it
4
and
pu
llabout 3
cm
through. 4
(4) Close
flap
l and
pass
the
thread through the flap's guide
5.
6) Ad
ju
sting the lo
wer-t
hr
ead tension
5 6 7
The
lowe
r
-th
r
ead
tension should
be
set
in
accordance
with
the type ofseam required. Adjust the tension
with
screw
7.
(See
the
picture
of
above)
7)
(nstalling the needle
Note: Before attach needle, be sure to turn off the power.
I)
Turn
the
ba
lan
ce
wheel
by
hand
to
raise
the
needle bar to
its
hi
ghest
pos
ition;
2)
Loose
n
the
needle
clamping screw:
3)
Ho
ld
the
needles
so
that the
two
needles side
with
the
long
g
rooved
(faces each other), and insert it
as
deeply
as
it
will go
i
nto
the
needle
clamping
ho
les( model wF
:~:::·
10
);Hold the
needle
to
its
side
with
the
Jong
groove side(left),then insert
the
needle
as
deeply
as
it
will
go
in
to
the
needle clamping
ho
le(model
WF1767-70
P·
AUT
4) Tighten
the
needle
clamping screw.
8) _Alternating
pr
esser foot moveme
nt
amount
The alternati
ng
movement amount for
the
inner presser
foot
and
the
outer presser foot can be adjusted within the range
of
I-7
mm
using
the
alternating presser
foot
movement
dia
l 1.
Turn
the
alternating
p.resser
foot movement dial I clockwise or
counterclockwise
to
align the
ma
r
k.
(MIN.
A,
13,
C,
D,
E,
F
MAX.) .
-
6-
WF
1767-2-70
P-AU
T
\\
1
long
2
3
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
9) A
dju
s
tin
g the
pr
esser
foot
pr
ess
u
re
The presser foot pressure should be set as
weak
as
possible, but strong enough so that the
mate
r
ia
l does not
sl
i
p.
If
the presser-adjusting
dial \ is turned clockwise, the presser foot
pressure
will
become stronger, and
if
it
is
turned
counterclockwise, the pressure
wil
l become
weaker.
10) Adjusting t
he
stitch leng
th
The
feed
adjustment dials 2 and 3 can be 2 3
used
to
se
t two different types
of
stitch length. (See the picture
of
above) Use
feed
adjustment
dial
2 to set the
big sti
tch
length. Use
feed
adjustment dial 3 to set the little stitch
length.
The sewing machine will switch
between
the
two stitch lengths each time the stitch length change swi
tch
is
pressed.
11)
Us
ing the ma
nu
al
sw
i
tc
hes
(I) Quick reverse switch
Back
tacki
ng
is carr
ied
out
du
ring sewing only
while
the swi
tch
I
is
being pressed.
(2)
Alternating presser foot movement change switch
The sewing machine can be switched between
two different alternating presser foot movement
amounts each time when the switch 2
is
pressed.
(3)
Auto back tacking select switch
lf
the switch 3
is
pressed when either start back
tacking or end back tacking
has
been set
to
ON
at
the ope1
·atio
n panel, back tacking is canceled
fo
r the first time
only.
Furthermore, if the switch 3
is
pressed
when
neith
e1·
starting nor
end
back tacking has been set, back
tacking
is
carried out
for
the first
time
only.
(4) Needle
up
or down switch
If the switch 4 is pressed, The needle .
will
move
up
to
the
need
le
up
stop position
from
down
stop
pos
ition
or
move
clown
to
the needle down stop position
from
up
stop position.
(S) Sti
tch
length change switch
The sti
tch
length
changes alternately between two different stitch
length
settings
each
time
the switch S
is
pressed.
OFF:
Sewing
is
carried out
us
ing the big stitch
length;
ON:
Sewing
is
carried out using the
Iittle stitch length.
(6)
Feed wheel switch
6:
lf
the switch
is
pressed, the
fee
d wheel will move
up
to
the
feed
wheel up stop
pos
iti
on
from
down
pos
iti
on
or move down
to
the feed wheel down stop posi
tion
from
up
position.
- 7 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
12) Cl
ea
nin
g
(I)
The area around
the
feed
dog and the hook should
be
cleaned every
day.
(2)
Remove
any
lh
read scraps
from
in
side
the
rotary hook.
(3)
Keep
the
control
box
clean.
13) L
ubri
cation
(I)
Check
the
oil
level
at
the sight glass l every
week.
If
the
oil is
not
enough, remove oil-filling screw 2
and
pour
in
oil.
Check
oil
level
at sight glass 2. The
oi
l
level
must be between
"EMPTY" and "FU
LL".
Replace
oi
l-filling screw
2.
After
r111111i11
g
for
500
hou
rs
si
nce
buying
the
new
sewing
mach
in
e,
the
oil
must
be
changed.Then change
the
oil every
two
years.
(2)
The
oi
l quantity
is
pre-set at a rel
at
i
vely
high
le
vel
in
order
to
ensure adequate lubrication during running-
in.
This setting
should
be checked and corrected after
running-in. (approx.
50
hours
).
The
hook is
to
have positive
lubrication with the least
possible amount
of
oil. Let the
sewing machine
run
approx.2
minutes.
And
run
in in
terva
ls
.
Hold
a piece
of
paper next to
the
hook
and
check ifs
uffi
cient
oil
is sp
un
o
il
onto
th
e paper.
Remove
cover plate 2. Loosen screw 3 until
the
tube I
no
longer moves. This
is
the
case
when
tbe tube
is
in
the center
of
the drilled hole.
Turn
screw 3
in
until
the
tube
mov
eme
nt
just starts and
then
a
1
/8
turn
fa1ther.
The hook lubrication is pres
et.
Attach
cover plate 2 again. Setting
the
hook lubrication
with
screw
3.
(J)
Lubricating
wicks
and
fe
lt
(see
th
e picture
of
above)
-
8-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
a.The wick I leading
from
the oils
ump
to the osci
ll
at
i
ng
crank 4
must
be fixed between the groove 2
in
the
arm
and the spring 3
of
the recirculation wick.
b.
When
t
he
oil satchel
is
changed, the flock s
id
e should
be
faced to
connecti
ng
plate I0. The oil wick 7 and 8 should be set between the
oilsatchel 9
and
plate
8.
(4) Checking the lubrication
oi
l.
Turn
on
the power switch. Depress the treadle gently
and
check
that the
oil
level rises
in
the oil sightglass.
14)A
clju
s
tii1
g the
tra
iling length
after
thread
tr
imming
oi
I
windows
Adjust
by
turning the pre-tensioner I. If the tension
of
the pre-tension is increased; the lengths
of
the
th
reads trailing
from
the
need
le tips will be reduced; if the tensi
on
is
reduced, the lengths
will
be increased.
1
5)
Back tacking
When
th
e reverse lever I or the quick reverse switch
is
pressed during sewing, the
feed
direction will
be
reversed.
When
it
is
released, the
feed
di
i-ect
i
on
will
return
to
normal.
16)
Adjusting
th
e feed
clog
Set
the
feed
adjustment dials to the minimum settings. Then
ad
just
as
fol
lows
so
that the feed dog I
is
at i
ts
highest positi
on
(0.
5111111
ab
ove
the
top
of
the needle
pl
ate 2) when the needle bar
is
at
its
lowest position.
(I)
Tu
rn
the machine pulley t~ set the feed dog I
is
at
its
highest
position.
(2) Loosen
the
screw3.
(3) Adjust the
feed
clog's
height.
(
4)
Tighten
the
screw
3.
17) Adjusting the needle
bar
height
Set the feed adjustment dials
to
theminimum settings. Then adjust so
that the distance
from
the setting surface
of
the needle plate 2 to the
end
-9-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
of
the
needle
bar
l
is
18.5mm
when
the
needle bar
I
is
at
its
lowest position.
(I)
Remove
the
face
plate.
(2) Set
the
feed
adj
ustme
nt
dials
to
"O".
(3)
Turn
the
pulley
to
set the
ne
ed
le
bar I
to
its
lowest
po
sition.
(4)
Loosen
the
screw
3
a
nd
th
en
mov
e
the
need
le
bar
I
up or
down
to
ad
ju
st so that the
di
stance
from
the
sell
ing
surface
of
th
e
ne
edle plate
2
to
the
end
of
the
needle
bar
I
is
18.5
mm.
(5)
Tighten
the screw
3,
insta
ll
the
face
plate.
18) A
dju
s
ting
th
e
gap
betwee
n
the
n
ee
dl
e
an
d
the
rotary
hook
tip
TI1e
gap
between
the
needle
and
the rotary hook tip
I
is
0.1
mm.
Set
the
rotary hook tip
at
th
e level
of
the
middle
of
the
ne
edl
e.
Then
adj
u
sti
ng
the
gap
as
follow:
(I)
L
oosen
the screws 2
an
d 5 (see
th
e picture
of
below).
(
2)
Set the hook base 6
to
the
fit position.
(3)
Rot
ate
the
adjusting plate 3,
let
the hook base 6 depend
on
the bed
pl
ate
4.
(4)
Tighten
th
e
sc
rews
2 and
5.
6
2
3 4
19) A
dju
s
ting
of
the n
ee
dle
a
nd
th
e
hook
t
imin
g
(I)
Set
the
stitch leng
th
to
"O".
(
2)
Remove
the
n
ee
dl
e pl
ate.
(3)
Overturn
the
arm
.
(4)
Loo
se
n
the
screw I
(5)
Turn
the
machine
pull
ey
to
raise
the
needl
e bar
from
its
low
position
to the point that
the
needle
ri
ses 2.4
mm.
(6)
Turn
the
rotary hook
to
ali
gn
the
rotary
hook
tip
with
the
center ofthe needle.
(7)
Ti
ghten
the
sc
rew
I.
10
-
--:'411
~•
,I .
~
'<
0.1
mm
1
5
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
20)
Hook
prot~ct
ion
111
looping stroke position the needle must abut
on
the hook protection 1without being
di
sp
lace
d.
Move
needle in
loopi
ng stroke posi
tion
by
p
ull
ey.
ln
looping stroke
po
s
ition
the
hook t
ip
is
at the level
of
the
middle of the needle.
Press
needle
against hook protection I manually.
Th
e needle should not touch
the
hoo
k
tip.
21) A
dj
usting the n
eed
le a
nd
feed
mechani
sm
timing
(I)
Horizontal
feed
direction
Set
the
feed
adjustment dials
to
the
maxi.mum
settings. Then
turn
the
machine pulley
un
til the needle bar
is
at i
ts
lowest positi
on.
T
he
n adjust so that the needle a
nd
the
feed
do
g
do
not move
even
when
t
he
reverse lever
is
moved
up
a
nd
down
at
th
is
time
.
a.
Remove
th
e bed upper cover
l.
·
b.
Set
the
fee
d adjustment dial to
th
e maxim
um
sett
in
gs.
c.
Loosen
the
two
sc
rews 2.
ct
.
Turn
t
he
machin
e pulley unt
il
the needle·bar
is
at
i
ts
lowest
position.
e. T
urn
the
lower feed
cam
3 gradually until it
is
at the position
whe
re the nee
dl
e and the
feed
dog
do
t
he
reverse lever
is
moved
up
an
d down.
f.
Tighten
the
two
screws
2.
(2)
Vertical
feed
direction
not
move
even
when
Se
t the
feed
ad
justme
nt
dials
to th
e
minimum
setti
ngs.
Then
adjus
t
as
fo
ll
ows so that the feed dog 1
is
at
its
highest
pos
ition
(0
.
5mm
a
bove
the
top
of
the
needle
pl
ate
2)
whe
n
the
needle
bar
is
at i
ts
lowest
pos
iti
on.
a.
Loosen
the
two
screws 3
b.
Turn
th
e
mach
i
ne
pu
lley
to
set
the
needle bar
to
i
ts
lowest
position. ·
c.
Turn feed
cam
4 to al
ign
the
point 5
of
feed
cam
4
with
the
centerline offeed
rod
6
d.
Tighten the screws 3
22) Adju
st
i
ng
the
op
ener position
0.
5mm
I
7
3
Adjust
so
that
the
cleara
nc
e
be
tween
the needle plate 3
and
the
stopper 4 ofthe inner
ro
t
ar
y hook 2
is
0.5-0.7
111111
when
the opener l
is
at
its
closest position
to
the inner rotary hook 2.
(I)
Turn
the
mach
in
e pulley
to
move
the
opener I
in
direction "a" (
openin
g direction),
and
the
n
loos
en the
-
11
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
screw 5
(2)
Turn
lhe machine
pu
ll
ey to
move
the opener I
in
direction "b" (closing direction),
and
then
lo
osen
the
screw
6.
(3)
Turn
the
machine pulley
to
move
the
opener I as
close
to
the
inner
rota1y
hook 2 as possible.
(4)
Whil
e pressing
th
e opener I against the inner
rotary
hook
2
with
your
finger,
adjust so that the
clearance
between
the
ne
ed
le plate 3
and
the
stopper 4
of
t
he
in
ner
rotitry
hook
2 is 0.5-0.7
mm.
(5)
Tighten
the screw
6.
(6)
Turn
the
mac
h
ine
pu
ll
ey to
move
the
opener I in
direction "a'' (opening direction),
and
then tighten
the
screw
5.
23)
A
dju
sting the
pr
esser
foot
height
The standard height
of
the outer presser
foot
7 is 9
mm
when
it
is
rai
sed
by
the
presser lifter bar
I.
(I)
Remove
the belt cover.
9.4mm
6
(2)
Loosen
the
presser adjustingscrew,
to
release
the
presser foot pressure.
(3)
Ra
i
se
the
presser lifters bar 1
and
then
loosen
the
screw
2.
0.S~0.7mm
(
4)
Move
the
outer presser bar
up
or
down
to
adjust so that the height of
the
outer presser foot 7
is
9
mm.
(5)
While
the
stopper
pin
6 is touching against
th
e notch B
in
the presser foot lifter connection 5
and
while
pu
s
hing
the
presser lifter shaft so that
th
e
re
is
no
pl
ay
in
the
thrust direction,
ti
ghtenthe screw
2.
(6)
Turn
the
presser adjustingscrew
to
adjust the presser
foot
pressure.
(
7)
Instal
l
the
be
lt guards.
-
·--·-
--
--
--
---
-
-------
------~
-
12
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
24) Ad
ju
st
in
g the al
te
rn
at
in
g
presser
foot
m
oveme
nt a
moun
t
(I)
Maximum
alternating presser
foot
movement amount.
Carry
out
the
follow
in
g adjustment
to
set
the
maximum
alternating movement amounts
for
the inner presser
foot
I
and
outer presserfoot 2 to
the
maximum
of
7
mm.
a.
Remove the upper
plate.
b.
Remove
the adjusti
ng
bracket
3.
c.
Loose
n screw 5
of
adj
ust
ing bracket co
ll
ar
4.
d. Adjust
the
adjusting bracket collar
4.
If
the
adjusting
brackc
l col
la
r 4 is
be
instal
led
at
the
highest position,
the
alternaling presser
foot
movement amount
is
l-6mm.
If
it
is
at
the
lowest position,
the
alternating presser
foot
movement amount
is
1
.6-7111111.
e.
Tighten
the
screw
5.
f.
Install
the
adjusting bracket
3.
d. Loosen
the
bolt 6
and
turn connecting lever 7 to adjust so
that
th
e distance
from
the outer edge
of
the
arm
to
the
outer edge
of
the
pin
7
is
78
mm
at this time. Then tighten the bolt
6.
(When
6
I
I
I
'
l
,(
,'
'
'
'
M8JCUTU'll
7
rrvn
installing
the
upper plate, set the alternating presserfoot movements dial·
to
the
"min." position.)
\
\
(2) Inner presser
foot
I and outer presser foot 2 movement
amounts.
Carry out
the
following adjustment to
make
the
movement amounts
for
the inner presser
foot
I and outer presser foot 2 equal
when
the presser feet are
lowered
and
the
machi
n
e_pu
ll
ey
is
turned.
a.
Set the
feed
adjustment dials
to
the maximum settings.
b. Open
th
ecover4
c.
Turn
the alternating presser
foot
movement
dial
to
the
"B" position.
cl.
Loosen
the
screw 3
e.
Turn
the
machine pulley toward
you
to
align
the
tip
of
the
needle
and
the top
of
the
feed
dog
with
the
top
of
the
needle pl
ate.
3
4 5
-
13
-
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
f.
Mov
e the
co
nnecting lever
to
aclju
st so that
bo
th
the
inner presser
foot
2 a
nd
outer presser foot J are in
con1ac1
with
the
top
of
the
needle plate at this
time.
Then
light
en
the
sc
r
ew
3.
25) A
dju
sting the
pr
esser foot t
imin
g
When
the
presser feet are lowered
and
the
m
ac
hi
ne
pulley
is
turned toward you. T
he
inner
presser
foot
shou
ld
touch
the
feed dog
before
the
needle arrives at the feed
dog.
Then
when
th
e n
eed
le
lift
s
up
,
the
tip
of
the needle
should
move
away
from
the
feed dog before
th
e i
nner
presser
foot
moves
away.
(I)
Remove
th
e upper cover
4.
(2)
Loosen
the
two
screws
1.
(3)
Turn
the
mach
i
ne
pulley until
th
e needle tip and
the
feed
dog's
up
face
is
the same plane.
(4)
Turn
inner
presser
cam
2
to
adjust so that
the
point
of
inner
presser
cam
2
is
facing straightup.
(5)
Tighten
the screws
1.
(6
)
In
sta
ll
the
upp
er cover.
26) A
dju
st
ing
th
e fixed k
ni
fe p
os
ition
The
distance
from
the groove
of
slide plate
to
the
tixed
k
ni
fe
I sh
ou
ld be 26
mm
. Furthermore,
the
distance
from
the
edge
of
the
needle plate
to
the
left edge
of
the
t
ip
of
the
fixed
knife
I should be 4
mm.
(I)
Loosen
the
two
bolts 2.
(2)
Adjust
the
position
of
the fixed
knife
1,
and
then
tighten
the
bolts
2.
-14-
3
3
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
27) A
dju
st
ing the
thr
e
ad
holding s
prin
g position (s
ee
th
e
pi
ct
ure
of
above)
The thread holding spri
ng
I holds
the
lower thread afier
thread trimming
to
prepare
it
for
the next sewing operation. The
clearance between the thr
ead
holding s
prin
g I and
th
e side of
the
fixed
knife 2 should
be
1.4-1.6
mm.
(I) Loosen
the
two
screws
3.
(2)
Move
the thread
ho
l
di
ng sp
ri
ng
1
to adjust
its
position,
and
then
tighten the screws
3.
28)A
dju
s
tin
g
th
e
kni
fe t
imin
g
pos
ition
After adjusting the position
of
the fixed kni
fe
1,
adju
st
the
knife liming position.
3
Adjust
so
tha
t
th
e driving l<n
i
fe
I starts
to
uching the
fixed
kni
fe
at a position 5.5
mm
along
the
front
edge
of
th
e
driving knife
I.
(I)
Loosen the
two
bo
l
ts
3 and 4.
('.!)
M
ove
the
dr
ivin
g
kni
fe
I
to th
e left or
ri
ght to adjust its p
os
ition.
(3) Then tighten the
bo
l
ts
3 and
4.
.
....
'
I {\
.
.
2
·-
3 . '
1
4
"t
'
5
6
29) Adj us
tin
g the driv
in
g
kni
fe heig
ht
The clearance between
the
l
owe
r blade edge
of
the drivi
ng
knife I
and
the
lower surface
of
the
inner
rota1y
hook should be0.3-0.4mm. (see
the picture on
th
e
ri
gh
t)
(I)
Loosen
the
two
screws 2 and
5.
(see the picture
of
above)
(2)
Move
the
driving knife shaft 6
up
or down
to
adjust
the
position of
the
dr
iving
kn
i
fe
I.
(3) Tighten
the
screws 2 and 5 on
the
setting collars again.
-
15
-
1~
VT
2J .
3-0
.4
mm
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
30)
Adjust
in
g the driving kni
fe
stop
po
sition
The
distance
from
the blade
of
the
fixed
knife 2
to
the
end
of
the
drivin
g
knife
I shou
ld
be
0.5
mm
when
the
driving
knife
I
has
moved
as far as possible toward the fixed knife
2.
(I)
Ti
lt
back
the
machine
head
.
(2)
Turn
the
machine pulley
to
move
the
roller 4
of
the
driving knife
arm
3
to
the outermostside (right s
ide)
of
the
thread
trimmer cam
5.
(3)
Loosen
the
bolt
6.
(4)
Move
the driving knife I so that
the
distance between
the
blade of the fixed knife 2 to the end
of
the
driving
knife
I
is
0.5
mm,
and
th~n
tighten
the
bolt
6.
31)
Ad
ju
sting the driving
knif
e ope
ra
ting position
4
5
6
The
standard distance
from
the left side
of
dr
iv
i
ng
knife arm l
to
t
he
screw tip on
the
plunger 2
of
the
thread
trimming
solenoid
is
I
mm.
The clearance
between
the
outermos
t side (right side)
of
the thread trimmer
cam
5
and
the
roller 6
of
the
drivi
ng
knife
arm
shou
ld
be
0.1
111111
.
(I)
Overturn
the
arm.
(2)
Loosen
the
bolt 3
(3)
Turn
the plunger 2
of
the thread trimming solenoid
so
that
thedistance
from
the left side
of
dri
ving
knife
arm
I
to
the
screw
tip
on
the
plunger2
of
the
thread trimming
sole
noid
is
I
mm,
and
then tighten the bolt
3.
(4)
Loosen
the
bo
lt 4.
(.5)
Set
the
plunger 2
to
the position where
it
projects
as
fa
1·
as
possible
to
the
lefl:.
(6)
Turn
the
machine pulley
to
move
the
roller 6
of
the
driving
knife
arm
to
the
outermost side (rightside) of
the
thread trimmer
cam
5.
-
16
-
--6
-o.1mm
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
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