Global WF 1767-AE-AUT Parts list manual

GLOBAL
WF 1767-AE-AUT
Instruction & Parts manual
www .globalsew.com
[email protected]

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

----
CONTENTS -----
1.
PR
ECAUTIONS
DEFORE
STARTING
OPEH.ATION············
...................................................................,
I)
S:ifely
precautions···················
.................................................................................................................J
2)
l
'rec:iut
i
on
before
Stal"l
in
g
Operation
....................................................................................................
I
J)
Precaution
fo,·
Opern
tin
g
Co
11llitio11
s ..············....................................................................................... ,
2.
SP
ECIF
I
CATIONS·················
........................................................................................................................ ,
3. PREPARATION
DEFORE
STA
RTING
TO
OPERATE.............................................................................2
I)
Con
nect.ion
ofco
nt.
rol
box
.......................................................................................................................
2
2)
Oil
pa
n······················..···················..···············································································...........................
3
J)
Opc
1
·ntio
n
pa
nel···················..·····························......................................................................................
3
4)
Adjusting
the n
eedle
sto
p
position
..........................................................................................................
3
S)
Lubricn
t
io
n ··························..·····..·················································...........................................................
4
4.
II
OW
TO
USE
THE
MACH
I
NE
...................................................................................................................
4
I)
T
hr
e11
di11
g········..........................................................................................................................................
4
2)
Adjust
in
g of
the
th
r
e11d
1
·egulnto
r················..·········................................................................................
5
J)
Adj
u
st
in
g of
upper
th1·ead
te
nsi
o11··
·········.............................................................................................
5
<I)
'"
'i
ndin
g
th
e l
ower
th
rea
cJ
........................................................................................................................
5
5) T h
readi
ng
the
l
ower
t
hr
e
ad·
···..···............................................................................................................
5
6)
Adjusting
the l
owe
r-th
read
te
nsion ........................................................................................................
6
7)
ln
stn
lli
ng
the n
ee
dl
c ..····················..·········................................................................................................
6
8)
Alte
rn
a
tin
g
presser
foot
m
ove
me
nt
amount
..........................................................................................
6
9)
Adjusting
the
pr
esser
foot
pressurc·······························..······............................................................... 6
10)
A
dju
s
tin
g
th
e
stitc
h l
engt
h ······................................................................................................................
6
11
)
Using
th
e
man
un
i
sw
i
tches
···························...........................................................................................
7
12)
Cl
ea
nin
j!
·································..···························......................................................................................
7
13)
Lubri
cn
tiou
········································.......................................................................................................
7
14)
Adju
sti
ng
the
trail
in
g l
eng
th
:1fte1·
thread
tri
mm
ing..····..····.................................................................
8
15
)
Ba
ck
lac
ldn
g .............................................................................................................................................8
I(,)
Adjusting
tile
f
eed
d
ug
··········...................................................................................................................
9
1
7)
Adjusting
the
n
eed
le bar
hei
gh
t..............................................................................................................
9
18
) Adj us
ting
the
gn
p
betwee
n
th
e n
ee
dl
e
anti
the
r
ota
ry h
ook
tip·
..······.................................................
10
t
'J)
A
dju
s
tin
g
of
the n
ee
dl
e aud
the
h
ook
timi
ng·······················................................................................
lO
20)
!l
ook
p1
·o
tcction··
····································································································································
lO
21)
Adjusting
lhc
n
ee
dl
e
nntl
feed
111
echa
nis
111
lim
i
11g
········
..···········..·····...................................................
1I
22)
Adjusting
the
ope
11
e1·
positio
n···················..·················..·····..................................................................l2
23)
Adjus
tin
g the
pre
sse
r
foot
hcig
ht
······..···...............................................................................................
1z
24)
Adjus
tin
g
the
n
ll
erna
tin
g
pr
esse
r
foot
m
ove
ment
a11101111(
....................................
.
............................
13
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2S) Ad ju st i ng the pr esse r foot timing ......................................................................................................... 14
26) Adjus tin g the fixed knife posit i o11··· ······································································································ lS
27) A dju s tin g th e thr ciu l hol di ng s prin g position···············································································....... JS
28) Adj t1. ~ ti11 g the knife timing po sit ion ......................................................................................................15
29) A dju s tin g the driving knif e height·· ····················································..···················..···························15
30) A dju st in g the drivin g lrnifc sto p posit ion········································..·······················..·····················..···16
31) Adjusting the drivin g kni fe ope ratin g po s ition· ····················.............................................................. , 6
32) Adj u sting the t hr ead tri mmin g tiJ11ing•·..·······························..···············...··········································J7
3.\) S afety clutch ···········································································································································l 7
34) Regulate the atmospheric pressure······································································........................ JS
5. 1-10\V TO USE THE VERTICALCUTTER··············· ................................................................................, g
1) Idle of the knife whe n the vertical cutter is turned off.·····.....................................................19
2) Timing of the deactivation of the knife ··················.......... .. .. ...................... .. ............................. 19
3) Position of the relea se block.................. ... .................................................................................... 19
4) Lub ri cation of the ecce ntri c ······· .. ············································· ··· ················································ 19
5) St roke of the knife ·························· ·· ···········.......................... .. ................................................... ... .. 19
<•) Tin1 ing of knife rnovernent ·· ············ ..·· ................... ..... ........................... ... .................... ... .............20
7) Knife overlap ·················· ·· ···· ··· ··································· ···· ············ · ·············· ··· ···· · ······················ ·· ·······20
8) Sett in g and p ressure of th e knife blades ················ .. ····························................................... .. 20
----- PARTS LIST -----
A. ARM BED AND IT S ACCESSORIES· ···················.......................................................................................2 1
B. T HR EAD TENSION REGULATOR MEC H ANISM ·····························..···················································25
<:. SE \VING M ECHANIS M ································································································································28
D.
PRE SSE R FOOT MECHANISM ·······················································································...........................31
E. UP P ER FEED LIFTING ROCKSHAFTME CHANISM·····················......................................................34
F. S TIT C H REGULATOR MECHANISM ·....................................................................................................... 37
G. FEE DING AND FEED LIFTING & ROTATING HOO K S HAFT MECHAN I SM ···············................... 40
1-1 . HOOK SA DDL !i: MECHANISM (RJGHT)··········........................................................................................43
I.
OIL LU BRICATION ME C HANISM ...........................................................................................................47
J. ACCESSO RI ES··································..·······..··········..·········.............................................................................. 50
K. PNE Ul\1ATIC CONTROL MECHANISM ................................................................................................... 52
L. KN I FFE MECHAN I SM ................................................................................................................................. 54
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I. PRECAUTIONS BEFORE STARTING OPERATION
1) Safety vre caut ions
(I) When turning the power on, keep your hands and fingers away from the area around/under th e
needle and the area around the
pulley.
(2) Power must be turned off when the machine is not used, or when the operator leaves his /her seat.
(3) The power must be turned
off before tilling the machine head, installing or adjusting the machine, or
when replacing.
(4 ) A void placing fingers, hairs, bars e tc. nears the pulley, bobbin winder pulley, when the ma chine is
operation. Injury could result.
(
5) Do not insert fingers into U1 e thread take- up cover, under/round the needle, or pulley when th e
machine
is in operation.
(6)
If a mini motor cover, finger guard, and/or eye guard are in s tal led, do not ope rat e th e machine
without these safety devices.
2) P1 ·e caution before starting operation
(I) Ifthe machine's oiI pan has an oil sump, never operate the machine before filling it.
(2) If the machine is lubricated by a drop oile r, never operate the machine before lubricating.
(3) When a new sew
in g machine is first turned 011, verify the rotational direction of the pulley with the
power o
n. (The pulley should rolate counterclockwise when viewed from the pulley.)
(4)
Ver if y the voltage and (single or three) phase with those gi ven on the machine nameplate.
3) Precaution for Operating Conditions
(I) A void using the machine at abnormally high temperature (35 ·c or higher) or low temperatures (5 ·c
or lower). Otherwise, machine failure may result.
(2) Avoid using the machine in dusty conditions. Avoid using the machine in areas where
too much
electrical noise, resulted
from the high-frequency welder and others, is generated
2. SPECIFICATIONS
Item
Max. Speed 2800rpm
Stit ch length 0
to 6111111
Needle bar stroke 34mm
Presser foot
By hand
9mm
clearance
By knee
16 mm
Rotating hook 2.5
Limes
Needle DPX
17 #I8-#25
Presser foot alternation l-7mm
Au to presser foot lifter Pneumatic
Oil lubrication method Automatic lubrication
Bed dimensions 300X
120 111111
Needle gauge (mm)
8
.
If se wing with st itch l ength of 6 mm or more, set the sc wm g speed to 2000 rpm or less.
- ] -
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3. PREPARATION BEFOR E STARTINGTO OPERATE
I) Co nn ect i on of control box
It shows the connection of the
electrical wires
of the whole machine
on the right pictlll·e.
When
the machine needs to be
11sse111b l ecl, each li ne should be link ed
to the right joint according lo the
instruction of the picture.
All the pins on the control box
have signals
of function showing, and
us uall y, different wi r es have different
kinds
ofjo int.
Caution: the pin of synchronizer w ir e is
the same wi th another two exte rn al pins
and if there is a misconnection, the
synchronizer
might be burn.
windpipe of HP
signa l Iine of motor power
synchronizer w ire
pedal wire
cont rol panel wire ,.
',
~ ,
connection board wire
power
input I ine
s ignaI Iine of connection board · . ., ~ ;'ttii!i~\'.)4
. '
When connecting the pipes, please check. the
_joi nt at the picture of the whole machine above
as reference.
And al
so there have an instruction mark. of
enc h joi nt of the solenoid at the setting board.
-2-
( MP )
( MR )
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2) Oil pan
(1) Install the oil pan J lo the underside of!he worktable l in the place shown in the illuslrntion using th e
nails 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 80111111 .
3) Operat ion pan el
(I) Insta ll the operation panel I to the set
plate 2 wi
th the three screws 3.
(2) Install the set plate 2 to the back
of the
machine arm with the two screws
4.
4) Ad. ju sting the n ee dl e st op po sition
( l) Adjusting the needle up stop position
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
pulley should be consistent with the mark onthe belt cover
A. Adjust as follows:
. 5
- 3 -
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a. Turn off the power swit ch.
b. Loose n the sc r ew 4, and then remov e the cover 3.
l: . When the red mark sto ps in a position over the mark on the belt cove r, the n eedle up st op position cl is l:
should be turned in th e opposite dire ct ion as the dir ect ion of machine pu ll ey rotati on. When the red mark s top s
i11 a po siti on under the mark on the belt cove r, Turn the disc I in the same direction as the pull ey rotation
dired i on.
(2) Adjust ing the n eed le down stop position
Wh en the se wing machin e s tops in the needle down stop position, the black mark on the pull ey shou ld be
l:O nsistent with the ma rk on the belt cover A. Ad ju st as follows:
a.
Turn off the power sw itch.
b. When the bl
ack mark stops in a position over th e mark on the belt cover, the needle down stop pos iti on
di sc 2 s hould be turned in th e opposite direction as the direction of machin e pulley rotation . When the black
mark st
ops in a po sition under th e mark on the belt cover, Turn the disc 2 in the same direction as th e pulle y
rotati
on dir ect ion.
c.
After a dju s ting, insta ll the cover 3, with sc r ew 4.
Note: There is no need to loosen the screw 5, when turning the discs. •·-· -···--· · · ·· -· ·-
5) Lubrication
Befo re the new machine is used, please l oose n th e screw 2 and
fu ll the oil into the oi l case. Set the oil l evel be twe en "EMPTY " and
'TULL" .T hen replace oil-filling screw 2.
4. HOW TO USE THE MACHINE
l) Thread i ng
R aise the thread take-up l ever to i ts high est position and thread the upper thread in the follow i ng orde r.
IO :-- ·\';,·· :" , ~~ ~f L: · ·· ~,-, ~d · := - ~
9 ♦
e ll.'
8 - ~ 4
' . ..·· ':1 3
7 '- : ~ ~ r~ ..
6 \.~ . J U~ ~ ]C;j- \ ~~: "
II
~!'· ·
12---1 __ / __
'
- 4 -
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2) Adjusting of the thread regulator
The thread regulator 9 (see the right picture) regulates the amount of needle thread necessary for stitch
formation. The setting depends on the following factors: material
l11ickness, yarn characteristics and stitch
length.
The thread regulator
is fitted with slots for this purpose. Moving in the "+"direction increases the quantity
of needle thread; Moving in the "-"d ir ection reduces the quantity of needle thread.
3) Adju st in g of upp er thread tension
Tension shou ld be as low as possible. The crossover point should be in I.he center of the material. Upper
lit rend tension can be adjusted by thread tension nut 4 and 5 (see the picture of above). Turn the thread tension
nut clockwise to increase the needle thread tension. Turn the thread tension nut counter-clockwise to decrease
the n
eed le thread tension.
4) Winding the lo we r thread
(I) Place the bobbin onto the bobbin winder shaft.
(2) Pass the thread for winding thread
as shown in
the figure, and wind the end of the thread clockwise
around the bobbin several times.
(J) Push the bobbin presser 1 toward the bobbjn.
(4) The operation will automatically stop when
winding is completed. The amount of thread wound
onto
th e bobbin should be a maximum of 80% if the
bobbin capacity. The amount
of thread would be
regulated by screw 2.
(5) After the thread has been wound on, remove
the bobbin and cut the thread with the thread-trimming
kn ife 3.
5) Threading the low er thread
(I) Raise flap I and remove the empty bobbin.
(2) Insert bobbin 2 in such a way that when the thread is unwou nd from it moves in the opposite direction
to th e gripper.
(J) Pass the thread th rough slit 3 and below spring 6, pass the thread through slit 4 and pull about J cm
through.
(4) Close
:flap 1 and pass the thread through the flap's guide 5.
4 5 6
- s -
2
3
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6) Adjusting the l
owe
r-thread
te
nsion
The lower-thread tension should
be
set
in
accordance with the type
of
seam required. Adjust the tension
wi
th
screw 7. (See the picture
of
above)
0
X
~~
~
-·~
Incase upper thread
switch
7) Installing
th
e nee
dl
e
is
t
oo
strong
or
lower
lhread is
too
weak
Note: Uefore
attac
h nee
dle
, be s
ur
e to t
urn
o
ff
the power.
I)
Turn the balance wh
ee
l by hand
lo
raise the needle bar to its
hi
ghest position;
2) Loosen the needle clamping screw;
3)
Ho
ld
the needles
so
that the two needles side with the long
grooved (faces each other), and insert it as deeply as it will go into
th
e needle clamping holes ;Hold t
he
need
le
to
it
s side with the long groove side(left),then insert the needle as
deeply as it w
ill
go into the needle clamping hole
4)
Tighten the needle clampingscrew.
8) Alternating presserfoot movement amount
The a
lt
ernat
in
g movement amount
for
the inner presser
foo
l and the outer presser foot can
be
adjusted within the range
of
1-7
111111
us
in
g the alternating presser foot movement dial
I.
Turn the alternat
in
g presser foot movement dial I clockwise or
cou
nt
erclockwise to align
th
e mark. (MIN. A,
B,
C, D,
E,
F
M/\X.)
9) Adjusting the presser foot
pr
essure
The presser foot pressure should
be
set as
weak as possible. but strong enough so that the
malcri
al
does not sl
ip.
1f the presser-adjusting
ui
al
1
is
turned clockwise, the presser foot
pressure will become stronger, and
if
it
is
turned
counterclockwise, the pressure
wi
ll
become
weaker.
10
) Adjus
ling
the stitch length
X
~
In caseupper
th
re
ad
is
t
oo
weak
or
lower
thread is t
oo
strong
The feed adjustment dials 2 and 3 can
be
us
ed to settwo different types
of
stitch length. (See the picture of
- 6 -
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above) Use reed adjustment dial 2 lo set the big sti tch length. Use feed adjustment dial 3 to set the lillle stitch
leng
th . The sewing machine w ill switch between the two stitch lengt hs each time the stitch length change
switch is pressed.
11) Using the manu al sw it ch es
(I) Quick reverse switch
Back tacking
is carried out during sewing only wh il e the switch I is being pressed.
(2 ) Auto back (acking select switch
Irthe switch 3
is pressed when either start back tacking or
end back tacking has been set
to ON at the operation panel,
back tacking
is canceled for the first time only. Furthermore,
i
rthe switch 3 is pressed when neither starting nor end back
tacking has been set, back lacking
is carried out for the first
lime only.
(3) Needle up or down switch
If the switch 4 is pressed, The needle wi ll move up lo the needle up stop position from clown stop
position
or move down to the needle down stop position from up stop position.
1
2) Cleaning
(I) The area around the feed clog and the hook should be cleaned every day.
(2) Remove any thread scraps from inside the rotary hook.
(3) Keep !he control box clean.
13) Lubrication
(I) Check the oiI level at the sight glass I. every week. If the oil is not
enough, remove
oi l-filling screw 2 and pour in oil. Check oil level at
sight glass 2.
The oil level must be belween "EMPTY" and "FULL".
Replace oil-filling screw 2. After ru nning for 500 hours since buying
the new sewing machine, the oil must be changed. Then change the oil
every two years.
(2) The oil quantity is pre-set at a relatively high level in order to ensure
adequate lubrication during running-in. This setting sh
ou ld be checked and corrected after running-in.
(approx.
50 hours). The hook
is lo have positive lubrication
with the least possible
amount of oil. Let the sewing
machine run
<1pprox.2
millutes. And run in intervals.
- 7 -
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Ho ld a piece of paper next to the hook and check if sufficient oil is spun oi l onto the paper. Remove
cover plate 2. Loosen screw 3 until the tube I no longer moves. This is the case when the tub e is in the
center
of the drilled hole. Turn screw 3 in until the tube movementjust starts and then a I /8 turn farther.
T
he hook lubrication is preset. Attach cover plate 2 again. Setting the hook lubrication with screw 3.
(J) Lubricating wicks and felt (see the picture of above)
a. The wick I leading from the oil sump to the oscillating crank 4 must be fixed between the groove 2 in
the a rm and the spring 3 of the recirculation wick.
b. When the oil satchel is changed, the flock side shou ld be faced to connecting plate I 0. The oil wick 7
and 8 should be set between the oil satchel 9 and plate
8.
(4) Checking the lubrication oil.
Turn
on the power switch. Depress the treadle gently and check that the oil level rises in the oil sight
glass.
14) Ad ju sting the trailing length after t hr ead trimming
Adjust by turning the pre-tensioner l. If the tension of the pre-tens io n is in creased, the lengths of the
threads trailing from
th e needle tips will be reduced; if the tension is reduced, the lengths will be increased.
15) Back tacking
When the reverse lever I or the quick reverse switch is pressed during sewing, the feed direction wil l
be reversed. When it is released, the feed direction will return to normal.
- 8 -
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I6) Adjusting the feed dog
0.5mm
l
w//47
Set the feed adjustment dials to the mini1num settings. Then ad just as follows so that the feed do g I is
at its highest pos ition (0.5mm above the top of the needle plate 2) when the needle bar is at its low est
position.
(I) Turn t he machine pulley to set the feed dog 1is at its hi ghest position.
(2) Loosen the screw 3.
(3)
Adjust the feed dog's height.
( 4) Ti ghten the screw 3.
17)A dj usting the needle bar height
Set the feed adjustment di als to the minimum settings. Then
adjust so that the di stance from the setting surface of the needle
plale 2 to the end of the needle bar l is 18.5mm when the
needle bar I is at its lowest position.
Se t the feed adjustment di als to the minimum settings. Then
adjust so that. the distance from the setting surface of the needle
plate 2 lo the end of the needle bar I is 18.5mm when the
needle bar I is at its lowest position.
(1) Remove the face plate.
(2) Set the feed adjustment dials to "O".
(3) Turn the pu ll ey lo set the needle bar 1 to its lowest
1_/ l
_ ___ 1 a_._s _"'=i I .. -·- __ _
2-
position.
- 9 -
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(4) Loosen the sc r ew 3 and th en mov e the need le bar 1 up or clown to adjust so that the dista nce from the
s e(I ingsurfa ce of the needle plate 2 to the end of the needle bar I is 18.5 mm .
('.'i) Tighten the sc r ew 3, in sta ll the face plat e.
18) Adjusting the gap between the need le and the rotary hook tip
Thegap between the needle and the rotary hook tip I is 0 .1 111111 .
Se t the rotary h ook t ip at the level of the middle of the n ee dle. Then
adjusting the gap
as foll ow:
( I) Loosen the screws 2 and 5 (see the picture of below).
(2) Se t the hook base 6 to the fit position.
(3) Rotate the adjusting plate 3, let the hook base 6 depend on the bed
plate 4.
( 4) TighLen the screws 2 and 5.
6 2
I
-~
19) A dju s tin g of th e n ee dl e a nd th e hook t imin g
( 1) Set the st it ch length to "O".
(2) Remove the n ee dle plat e.
(3) Overturn the arm.
( 4) Loosen the serew I
(5) Turn the machine pulley to rnise the ne ed le bar from its low
position to the point that the n eed le ris es 2mm.
( 6) Turn the rotary h ook to a li gn the rotary hook lip with the
ce nter of the n ee dle.
(7) Tighten the scr ew I.
20) Ho ok prot ec tion
ln looping stroke pos ition the needle must abut 011 the hook
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0 .1 mm
5
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prot ection I without being displaced.
Move needle in looping stroke position by pulley. In looping stroke position the hook tip is at the level of'
the middle of the needle. Press needle against hook protection 1 manually . T he needle should not tou ch the
hook tip.
21) Adjusting the needle a ud feed mechauism timing
(I) Horizontal feed direction
Se t the feed adjustment dials to the maximum sett ings. Then turn the machine pulley until the needle bar is
at its lowest position. Then adjust so that the needle and the feed dog do not move even when the reverse le ve r
is moved
ur and down at this time.
a.
Remove the bed upper cover I.
b. Set the feed ad justm ent dial to the maximum
settings.
c. Loosen the
two screws 2.
cl. Turn the machine pulley until the needle bar
is at its lowest position.
2
E
3
Q 0
.. · ·-
2 0.5mm
l
6
0
e. Turn the lo wer feed earn 3 gr adua ll y until it is at the position where the needle and the feed dog do not
move even when the reverse l ever is moved up and down.
r. Ti ghte n the two screws 2.
(2) Verti ca l feed direciion
Set the feed adjustment dials to the minimum settings. Then adju st as fo llo ws so that the feed dog I is at
its highest position (0.5mm " above the top of the needle plate 2) when the needle bar is al its lowest position.
a.
Loosen the tw o screws 3
b.
Turn the machine pulley to set the needle bar to its lowest position.
c.
Tu rn feed cc1111 4 to align the po int 5 of feed cam 4 with the centerline of feed rod 6
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d. Tighten th e screws 3
22) Adju st ing the op ener position
Adjust so that the clearance between the needle plate
3 and the stopper 4 of the inn er rotary hook 2 is 0.5-0.7
111111 when the opener I is at its closest position to the
inner rotary hook 2.
(I) T urn the machine pu ll ey to move the opener I 111
d ir ec t ion '·a'' (opening direction), and then loosen the
screw 5
(2) Turn the machine pulley to move the opener I in
direction '' b" (clos in g direction), and then loosen th e
screw
6.
(3) Turn the machine pulley to move the opener I as
close to the inner rotary hook 2 as possible.
(4) Whi le pressing the opener I against t he inner
rotary hook 2 with your finger, adjust so that
th e
clearance between the needle plate 3 and the stopper 4
of
the inner rotary hook 2 is 0.5-0.7 mm.
(5) Tighten the screw 6.
_____ _.__ ,....._--',.__,
6 5
(6) Turn the machine pulley to move the opener I in direction "a" (opening direction), and then tighten the
screw 5.
23) Adjusting the pre sse r foot height
The standmd height of the outer presser foot 7 is 9 mm when it is raised by the presser lifter bar I.
( I) Remove the belt cover.
(2) Loosen the presser adjusting screw, to release the presser foot pressure.
~ - 1
=r9rnrn
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(3) Rai se the presser lifters bar I and then loosen the scr ew 2.
(4) Move the outer pr esse r bar up or down to adjust so that the height of tile ou t er presser foot 7 is 9 mm.
(5) While the stopper pin 6 is touching against the notch B in the presser foot lifter connection 5 a nd while
pushing
the presser li fter shaft so that there is no pl ay in the thrust direction, tighten the screw 2.
(6) Turn the presseradjusting screw to adjust the presser fool pressure.
(7) In sta ll the belt guards.
24) Adjusting the al ternating pr esserfoot movement amount
( I) Maximum alternating presser foot movement amount. Ca rry out the following adjustment to sci the
maximum alternating
movement amounts for the inner
pr esse r foot I and oute r press er foot 2 to the maximum of 7
mm.
a. Re m ove the upper plate.
b. Remove the adjusting bracket 3.
c. Loosen screw 5 of adju sting bracket collar 4.
d. Adjust
th e adjusting bracket collar 4. If the
adjusting bracket collar 4 is be installed at the highest
po sition, the alte rnating presser foot movement amount is
l-6mm. If it is at t he lowest position, the alternating presser
foot movement amount is l.6-7mm.
e. Tighlen the screw 5.
f. In sta ll the adjusting bracket J.
cl. Loosen the bolt 6 and turn connecting lever 7 to
adjust so that the distance from the outer edge of the arm to
Max imum 7 mm
the ou ter edge of the p in 7 is 78 mm at this time. Then tighten the bolt 6. (When installing the upper plate, se l
the alt
er nating presser foot movements dial to the "min." position.)
(2) Inner presser foot I and outer presser foot 2 movement amounts. Carry out th e fo ll owing adjustment to
make the movement am ou nts for the inner presser foot 1 and outer presser foot 2 equa l when the presser feet
3 4 5
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arc lowered a nd the machine pulley is turned.
a. Set the feed adjustment dials to the maximum
settings
b. Open
th e cover 4
c. Turn the alternating presser foot movement dial
to
the · ·8 " p os ition.
d. Loosen the screw 3
e.
Turn the machine pulley toward you to align the
tip or
th e needle and the top of th e feed dog with the top
of th e needle plate.
3
r. Move the connect in g lever to adjust so that bo th the inner presser foot 2 and outer presser loot I are in
contact with th e top of the needle plate at this time. Then tighten the screw 3.
25) Ad ju sting the presserfoot timing
When the presser feet are lowered and th e machine pull ey is
t urn ed toward you. The inner presser foot shou ld touch the feed
dog before the needle arrives at the feed dog. Then when the
ne edle lifts up. the tip of the needle sho uld move away from th e
Iced dog before the inner presser foot moves away.
(1) Remove the upper cover 4.
2 3
(2) Loosen the two screws 1.
(3) Turn the machine pulley until the nee dl e lip and the feed
dog's
up face is the same plane.
(4) Tum inner presser earn to adju st so that the point of
inner presser cam is facing straight up.
(5) Tighten the screws 2.
(6)
Wh en installing the upper plate, set th e alternat in g
presser
foot movement dial to the "M IN." position.
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26) Adjusting the fix ed knife position
The distance from th e groove of slide plate to th e fixed knife I should be 26 mm. Fu rthermore, the
distance from the edge
of the needle plate to the left edge of the li p of the fixed knife 1shou ld be 4 mm.
(I) Loosen the t wo bolt·s 2.
(2) l\djust the position of the fixed knife I, and then tighten the bolls 2.
27)Ad ju sting the thread holding spring position (see the picture of above)
The thread holding spring I holds the lower thread after thread trimming to prepare it for the next sewing
operation. The clearance between the
th read holding spr in g l and the side of the fixed knife 2 should be 1.4-1.6
111 1 11.
( I) Loosen the two screws 3.
(2) Move the thread holding spring l to adjust it s
positio
n, and then tighten the screws 3.
28) Ad ju st in g the knife timing po s ition
Afler adjusting the position of the fixed knife I, adjust
th e k ni fe timing position.
Adjust so that the driving knife 1
st arts touching the fixed
k
ni rc at a position 5 .5 mm along th e front edge of the driving
kn i re 1.
(I) Loosen the two bol ts 3 and 4.
5 .5m
(2) Move the driving knife 1 to the left or ri ght to ad ju st its position.
(3) Then
ti ghten th e bolts 3 a nd 4.
29) Ad_ ju st iug the driving knife h eig ht.
The cl earance between the lower bl ade edge of the driving knife I and the
lower surface
of the inner rotary hook should be 0.3-0.4 111111.
(I) Loosen the two screws 2 a nd 5.
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(2) Move lhe driving kn i fe shall 6 up or down to adjust the position of the driving knife l .
I
2
3
4
5
6
(3) Tighten the screws 2 and 5 on the setting collars agai n.
30)Adjusting the dr iving knife st op position
The distance from the blade of the fixed knife 2 to the end of the driving knife I should be 0.5mm when
the driving knife 1 has moved as far
as possible toward the fixed knife 2.
(I) Ti It back the machine head.
(2) Turn the machine
pu lley to move the roller 6 of the driving knife arm 5 to the outermost side (right side)
or th e thread trimmer cam 7.
(J) Loosen the bolt 4.
(4) Move the driving knife I so that the distance between the blade
of the fixed knife 2 to the e nd of the
driving knife I
is 0.5 111111, and then tighten the bolt 4.
31) Adjusting th e drivi ng k ni fe operating position
The standard distance from the left side of driving knife arm 1 to the screw tip on the pl un ger 2 of the
th r ead trimming soleno id is 1 mm. The clearance between the outermost side (right side) of the thread trimmer
cam 5 and th e ro ller 6 of the driving kn i fe arm should be 0.1 111111.
(I) Overturn the arm.
l2) Loosen the
bo lt J
(3) Turn th e plunger 2 of th e thr ea d trimming solenoid so that the distance from the left side of driving knife
arm I
to the screw tip on th e plunger 2 of the thread trimming solenoid is I mm , and then tighten the bolt J.
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