Jack JK-8990D User Manual
~PORTANTSAFETYINSTRUCTIONS
Putting sewing systems into operation
which these sewing machines will be built into, have conformed with
Technical service for those sewing systems
!.Observe
machine.
2.Read a
In addition, keep this instruction
3.Use the machine after it has been ascertained
country.
4.AII safety devices mu
without the specified safety devices is
S.This machine sha
6.For your personal protection, We recomme
7
.For
receptacle.
7-1
7-2
7-3 For
7-4 When leaving the working place
7-5 When using clutch motors
8.1f you should allow oil, grease, etc. used with the machine and devices to come in contact with your
skin
doctor.
9.
Tampering with the live
IO.Repair, remodeling
specially skilled personnel. Only
ll.General
l2.Repair
or
Whenever you find a failure
l3.Before making
air
be
expelled. Exceptions to this
technicians
14.Periodically clean the machine
the bas
ll
the
the following,
For threading needle(s), looper,
For
folder, cloth guide etc.
repair
or
swallow any
and
under
cylinder,
cut
off. Existing residual
ic
safety measures, including,
instructions, including,
st
be in position when the machine is ready for work
ll
be operated by
turn
off the
rep lacing part(s)
work.
maint
enance
maintenance works
the
audit
and
repair
the
air
or
specially skilled personnel.
of
of
such liquid by mistake, immediately wash the contacted areas
parts
and
adjustment
and
inspection works have to
guidance
and
maintenance works on
compressor bas to be det.ached from
air
needle, presser foot,
and
of
are
is
prohibited until it bas been ascertained
is
also proh.ibited.
but
but
not limited to this instruction Manual before you use the machine.
Manual
appropriate
power
without
devices, regardless
spare
of
of
any
pressure
only adjustments
throughout
so
that you may read
that
not
allowed.
ly-trained operators.
nd
that
you
switch
spreader
or
when the working place
app
works must only be done
parts
electrical components
specially skilled personnel.
of
electrical components, immediately stop
after disconnecting
or
etc.
and
lying brake,
designated by
the period
that
the sewing systems
the
safety regulations in your county.
not limited to the following ones, whenever you u
it
at
anytime when necessary.
it conforms with safety rules/standards valid
or
in operation. The operation
wear
safety glasses.
disconnect the power plug
replacing bobbin.
throat
the
and
plate, looper, spreader, feed dog, needle guard,
is
unattended.
it
has to be waited until the
of
whether the machine
by
appropriately trained technicians
JACK Can
be
done by appropriately trained personnel.
sha
ll
be conducted by qualified electric technicians
machine equipped with pneumatic parts such as an
the
machine
the
performance checks
of
use.
be
used for repairs.
and
air
compressor from
of
the
machine from the
motor
stopped totally.
and
consult a medical
is
powered, is prohibited.
the
machine.
the compressed
done
by
air
the
machine bas to be
appropriately trained
supply bas to
se
in
eyes
in
the
your
or
or
IS.
Grounding
be operated in
l6.An
appropriate
connected to a 2rounded receptacle.
l7.The machine is only allowed to be us ed for
l8.Remodel
safety measures.
machine.
l9.Warning hints are marked with
the
machine
an
environment
power plug has to
or
modify the machine in accordance with
JACK
is
always necessary for the normal operation
that
is
free from strong noise sources such as high-frequency welder.
be
attached to
the
assumes
Danger
Items requiring special attention
of
no
responsibility for
the
two shown symbols.
injury
to
operator
of
the
the
machine by electric technicians. Power plug has to be
purpose intended.
the
safety rules/standards while taking all the effective
damage
or
service
Other
used
caused by remodeling
staff
v
machine. The machine has to
are
not
allowed.
or
modification of the
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avo
id
electrical shock hazards, ne
components mo
FOR
unt
ed inside the electrical box.
SAFE OPERATION
ith
er
open
the
cover
of
the electrical box nor touch
the
&
l.To avoid personal injury, never
devices removed.
2.To prevent possible personal injuries caused by being caught in
head
an
d clothes away from the handwheel while the machine is in ope
place nothing around it.
3.To avoid personal injury, never
power switch or operate the machine.
4.To avo
S.The hook rotates
6.To avoid possible persona l injuries, be careful n
7.To
8.The motor does not produce noise while the machine
9.To avoid elec
JO.To
id
personal injury, neve r put
machi
ne
is
in
opera
tion.
at
h high speed while the machi
to hands, be s
addit
ion
tilting /rai sing the machine head.
avoid possible accidents because of
machine when tilting the m
the machine, etc.
to
abrupt start
the power supply removed.
prevent possible accidents because
turn
OFF the power switch in
, be
ure
to keep your hands away from
sure
to
turn
OFF the power to
of the machine, be sure to
tri
cal shock h
operate
put
your
your
abrupt
ac
hine b
ead
azards, never
prior
to the connection/disconnection
the
machine with
hand und er the needle when you
fin
gers
into
ne
is
the
vicinity
the mac
or performing
turn
operate
of
electric shock
hine when replacing
ot
to allow yo
start
of
OFF the power to
the sewing machine with the ground wire for
any
the
in
operation. To prevent possible injury
of
the machine,
rep
laceme
is
at
rest.
or
damaged el
of
the
finger
the
mac hine, keep you
thread
ur
take-up cover while the
the
book
the
fing
ers
turn
OFF
nt
of
To
avo
id possible accidents due
the
machi ne.
ectr
of
the power plu
guard
or
safety
fin
gers,
rat
ion. In addition,
turn
"ON" the
during operation .. In
bobbin.
in the machine when
the
power to the
parts,
adjustment of
ical componeot(s),
g.
vii
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28
viii
CONTENTS
SCHEMATIC
BEFORE OPERATI
1.
SPECIFICATIO
2.
INSTALLATION··················································································································· 4
3.
ADJUSTING
4.
INSTALLING
LUBRICATIO N(8990SS, 8991SS)·····················································································5
5.
6. ADJUSTING
7. ADJ
8.
9. SETTING
10. ADJUSTING
11
. PRESSER
12. THREADING
13 . WINDING THE BOBBIN TRREAD··· ................................................................................. J2
UST
(8990SS, 8991SS)··················································································································7
ATTACUING
DIA
GRAM OF
ON·········································································
NS
················································································································ 3
THE
HEIGHT
THE
THREAD STAND··············································································· 5
THE
AMOUNT
ING THE AMOUNT
THE
NEEDLE·································································································8
THE
BOBBIN INTO
TUE
STITCH
FOOT
PRESSURE .............................................................................................. 10
THE
MACHINE HEAD ...............................................................................
THE
LENGTH
MACHINE TABLE······························ ....................
····
··································· 2
OF
THE
OF
OIL
OF
OIL(OIL
THE
KNEE
IN
BOBBIN CASE .............................................
...............................................................................
LIFTE
THE
SPLASHES)IN THE HOOK
R·····················································5
HOOK
(8990SS, 8991SS)··················6
....
....
....... 9
JO
I
Jl
14. THREAD
15. TOREAD TAKE-tJP SPRING ............................................................................
16.
ADJUSTING
17.
ADJl
18. PEDAL
1
9.
ADJUSTMENT
20. PEDAL
21
. ONE-TOUCH TYPE REVERSE
22. WIPER ··································································································································21
23. NEEDLE-TO-HOOK
24. COUNTER KNIFE ...............................................................................................................
25. HEIGHT AND TILT
26.
ADJl
27. THREAD TENSION RELEASE RELEASING MECHANISM ....................................... 26
MICRO-LIFTING MECHANISM
28.
TENSION ..............................................................................................................
THE
THREAD TAKE-UP
TSTING THE NEEDLE S
PRESSURE
OPERA'
iSTfNG
THE
AND
PEDALSTROKE
OF
THE
PEDAL ........................................................................................ J8
I.l0N···················
RELATIONSHIP
OF
THE
FEED
TIMING
TOP POS
··················································
FEED STIT
FEED DOG ........................................................................
STROK£
mON
............................................................
................................................................. 15
.....................................................................
·······································18
CHING MECRANISM ............................ 19
........................................................................
......................................................................................
OF
THE
PRESSER FOOT ......................................
......
............ 14
..
13
15
17
22
23
24
25
27
PARTS
BOOK
......................................................................................................................... 28
ix
S
CHE
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MATIC DIAGRAI\tl OF THE MACHINE TABLE
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• Remove air-vent
• For SS types, be s
• Before you
• Remove all dust gathering
• Confirm
• Confirm
• Never use
• Confirm
•
Oo
• A safety switch is in
tilted. When operating the sewing machine,
setting
that
that
that
not tilt the sewing machine head toward this side since
the
cap
(red color) attached to
ure
to
pour
in the oil before using.
put
the machine into operation f
during
the voltage has been correctly set.
the
pow
er
plug bas been properly connected to the pow
the
machine
the direction
head on the table.
in
the state where
of
sta
lled so
transportation
rotation
that
of
the
sewing machine cannot be operated with the head
the
or
the
voltage type is different from tbe designated one.
the
motor pulley is correct.
turn
sewing machine bed.
the
first time aft
and
oil it well.
ON
the power switch
oil
leakage
er
the set-up, clean it thoroughly.
er
suppl
y.
or
parts
breakage occurs.
after
properly
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1. SPECIFICATIONS
8990SS
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JACK
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8991SS 8990DS
cp
J1J*4
5000
tj
·
*5mm
DBxl #9-#18
lOmm
(.tir-/f.t)
15
30.7
mm
ti~
300mm
Oil No.1
517mm
tfl.illl
Xl78mm
rom
(~::k)
~M
4000
899LDS
tt
I
-A~t~t4,
~i\11jfij:7f
x~~ti~
--
8990SS
Application
spee
Sewing
Stitch l
Need
Presser
foot
Needle bar stroke
Rota
Arm
Arm
Lubricating oil
*The
maximum sewing speed is 4000 rpm when the stitch length
d
ength
le
life(
by
knee
litter)
ry hoo
k
pocket size
bed
size 517mm
General fabrics, light-weight
medium-weight materials
Lubricated rotary
JACK
I
Max
.5000
New
Defrix Oil No.I
rpm
8991SS
IOmm
hook
and
*Max.
DBxl #9-#18
(standard)
30.7
is
8990DS
General fabris, light-weight materials
5mm
15
mm
(max.)
mm
Lubrication-feer rotary
300mm
X178mm
not less than 4 mm.
I
Max.4000
--
899I DS
rpm
hook
3
2.
~~9J
tJLI
Y-J~~
(1)
~fll¥1~~
1 >
re~ttt~
2)
ffl~H®:JelitriJ!tl®rfJ
~~~•·
m§!®
3)
re~•CD$¥1J;fn.Eirf.J1L
~B$¥1J
4)
Yiif:f(~
~J:
¥tl
m~•~~~*~•ru®rt-J21-~•~
,
?t.t.Fo:te~tll!
1m
ffi
AK
.
IINSTALLATION
m
~
7t1
rt-J
ll!l
ffl.t .
21-~Hi!.fi~j:§!(D~H,J-11LE1
@$.t~.
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.~fiEEi~.ti~~~®.1e
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i~1e.fJl.~~tijt.ff@:f(~¥
~fJL
(1) Installing the under cover
I )The under cover should rest on the four comers
machine table groove.
2) Fix two rubber seat.;
using nails ® as illustrated above. Fix two cushion
seats ® on side ® (hinged side) using a
rubber-based adhesive . Then place under cover
the fixed seats.
3)
Fit hinge
andfit the machjne head to table rubber hinge @
before placing the machine head on cusruons ® on
the four comers.
4)
In
support rod @ to the machine table.
CD
into the opening
case the AK-device is not provided,attach head
CD
on side ® (operator's side)
in
the machine bed,
of
@)
the
on
- o
e-
4
A.
_
WARNING:
Turn
OFF
s
tart
of
the
the power
sew
in machine.
before s
tarting
the
work
so as to prevent accidents
1)
~
i)I
Jt1HrH~llt4Jfi(JtJf-ftti%13t.fJ
2)~~-~-*~~•~CD~~reffi~~~•*
15mm.
caused
IOmm
by abrupt
.
4.
~~o<Jhttps://manualmachine.com/INSTALLING
THE
(tj:~) .tE1effi
~®~
1 )
The
standard height
knee lifter
2) You can ad
knee lifter adj u
(Ca
ution) Do
THREAD
1)
~n
~fjf~JJ
2)
JfJ
1ti1
3)
rm~x
reu
1 )Assemble the thread stand unit,and insert
m the machine table.
2) Tigh
3) For ceiling wiring,pass the power cord through spool
ten locknut
r
es
t rod ®.
lJW®~
ffi~®~~.mt».
is
I Omm.
just
not
s
tate
that
mm
or
contact
in
ft
lOmm
of
the presser foot lifted using the
the presser foot lift
st
screweD.
operate
the
more since
with
the
presser
the
the
presser
sew
foot ® is lifted by 10
needle
1»-..t
fl<J~
~~~~
up
to 15mm using
ing machine in
bar
foot @.
STAND
I
Stf1e;:l~3C~~~Jf:t.fL.t.
~
t~
·
r.J
CD
l!m
frt.
~ ~ ~
~~He
CD
.
rt!
im!~x»Jx~H
to
ftx the thread stand.
®cr
~.
f!i
~~mm
® comes
~
i1.
it
in the hole
~#
.
the
5.
j]u~
&
~
(8990SS, 8991SS) I LUBRICATION (8990SS, 8991SS)
¥.£~
'~
WA
RNING:
Turn
OFF
of the sewing machine.
~r~~~m
the powe
r before
mfl<1a*&
sta
rtin
g the
~~~-~-~~~-fi~~
work
5
so as to
preve
nt accidents ca u
-
sed
by
abrupt
start
Fill
the oil
tank
with oil for
I ) Tilt the machine head until it
2) Remove oil hole cap
the machine.
3)
The amount
will leak from the
4) When you operate the sewing machine, refill oil
the lower engraved marker line
(Caution)
of
oil should reach up
1.
When you use a new sewing machine
run yo
2. Do not remove
CD
air vent
ur
machine
hook
lubrication before operating the sewing machine.
comes
in contact with the head support rod.
and fill the oil
bole
in the oil
of
at
3000-3500
rubber
plug @.
tank
with JACK
to
the engraved marker line
tank
or
oil amowlt indicating window @
rpm
~••mm~~.
l)
1EfibJJ.t!LfiXfftJ,
2)
lEfJ"""f:br:J~
New
3)
ii:IE1\fJ1Jr:J#UiJ~.m®atJ~
~~
IE
#fJil~~~~.
4)
f~fflU~JJmat.
®atJ"""F~~J~
c
tt~)
D
Deflex No.1
.
m~~M~-~~~~~*·
t.
ifJO
m~t-t
2..6-NifJO.
2.lti~~:IE®£1CJ.~ttt£~.
New
Defrix Oil No.I using the oiler supplied with
of
oil tank ®.If the oil is filled excessively, it
proper
if
lubrication will be
the top end
or
a sewing machine
for the purpose
of
oil amount indicating rod ® comes down to
of
•-~tt••~M~~~
#:J(i
~.t!L
~~f,Uf
iWi
CD,
ft.J=§
llft
1M~
m~.
Ij
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tm*~:l:fli7F;ff®fli¥
I2J.
r,
iRliHr1Jo~.
JT!lmm!~U~¥drt1Blti:ff
,ift]tlltff
after
break-in.
3000-3500 rpm
not
perfonned
an
extended period of disuse,
.t.
1Jil1W
iUUA
ii!ttt~:bll¥!lli1§f;
&~~~~~
. So,be careful.
JACK
1J
rm:!:m7Fw
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e9!lfm
I'J(Jlffil-lg~
6.
lE~rmill¥.JiiAJ.
IN THE HOOK
WARNING:
A
Turn
OFF
of
the sewing machine.
(8990SS,
899ISS)
(8990SS, 8991SS)
the
power before
starting
I ADJUSTING THE AMOUNT OF OIL
the
work so as to prevent accidents caused
··~:!:JOJitE·~·~~~~
(I)
~~
1J ¥t
Decrease
Incr
ease
rr~ <[Q]::b~~)
•
~$
.
rr~<~
(tj:ft)
1. ss
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re
~
:1:\\1
JjJ
2.
i!Jti RP
flt£1CJ?1iJJD(~.
6
JIE~ ( =f~:Jti~)
•
!J,
••
~"~>
RP
•
::f'
by
abrupt
CD
*~~
rm:fl!:
~~~~
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:lti~
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11:
m
~
rAt
at,
.
CD
l±i
•
&-
JE~fm1E!11.?1il
~.
••rm
.
Jt-t,
iif-JE
start
Adjusbnent
I)
Adjustment procedure
Tighten
(turn counterclockwise) to decrease
(Ca
ution) 1. When using
7.
:Mf~rffiit
OF
&¥£~
&\
(1)
?lli:fit
<D
Amount
of
the amount
(tum clockwise) oil amount adjusbnent screw
adjustment
2.
Never drain
(
OIL
' checked
(OIL
...
~
WARNING:
Be
extre
($UIJH)
of
oil
(oil splashes)
of
oil in the
RP
screw
the
oil in the oil tank
rffi~)
I¥J~f!/JW(8990SS,
SPLASHES) IN
~~~~~~~~.~T~~A~$~.
mely careful
by turning
?Of!V..1Jf!l
How
confirmation
hook
it.
hook(hook
up
to
the
about
the hook
to
con firm
at
is performed with oil
CD
for
dry
head)
minimum so
even
as
when
to
8991SS) I ADJUSTING THE AMOUNT
the
a hi gh
paper
THE
operation
the
HOOK (8990SS, 8991SS)
of
spee
d.
amount
®
amount
to
increase the amount
for
the
reduce
RP
hook
the mac
of
oil (oil
Position
adjus
SS
type,
the
oil
(hook
~-~-~.~m~~~~~~
hine
splashes)
to
confirm
bne
be sure
amount
for
dry hea
since
the
nt screw
of
the amount
amount
CD
oil
in
to
loosen
in the hook.
d) is used.
of
oil
.
the hook, or loosen
the
oil
amount
.
of
oil has to be
-
(oil splashes)
E
~
E
n
•
• Use
* iiHJ'F 111 2)
I )
z)m~umm*~B1~~~<~~)•~•m~•A.
3)
4)
[1!-------~
70
mm
ft.;f;
Approx. 70 mm Oil
>Fffi~~~(
tfl
~lt!rJrr.t,
·~nlltfN9'~~~1r!
~lt
rl:
F-JJ1
any
Hil:.
paper available regardl
tr'.lft~B1.
i!litHr 3
Offiil£)
1iffl~ftt
ess
illffEIJrffi
?t~li:;ba<J~~iE~.
J.
i'8J
;9 5 .fy~cp.
of
the
material.
:tJX.
~ftt~JE
Oll~B
splashes
•
•
?tr£g.:p11J:f'!H
C
~3a<Jf8Jf.i::iE~)
lt~Y!tl
~)
~~
Hook
nn~liffiV-
confirmation
reit!lill
<nn~>li1HV-
Place
the
paper
under
~
T~111u·f;1,t
Hook
-
~m~
paper
amount
the
hoo
t¥1JJiJE~.
driving
~
ffl
fft:tilif'1..16Ett
of
oil
(oil
k.
shaft front bushing
fit the paper
Closely
against
surface
the
of
the bed.
rffii.
splashes)
confirmation
wall
* When carrying out the procedure described
allow your fingers to come in contact with the
below
in 2, remove the slide plate
hook
.
7
and
take extreme caution not to
I) If the machine has not been sufficie
approximately three minutes.(Moderate intermittent operation)
nt
ly warmed up for operation, make the machine
run
idle for
2) Place the amount of oil (o
operation.
3) Conftrm that oil exists
4) Confirmation
watch.)
(2)
7111:1!:
(
of
711!~) ~*~1l/
Splashes
in the oil
the amount
lAME~~~
of
/
: 1 v
·
V:
' '
' '
: i
.1.
0.5-1
itb:ID:
~
iate
amou
~ ( tj\ )
nt
of
Appropr
il
splashes) c
tank
of
oil should
Samp
le showing the appropriate
l±l
:liE
B<J
from
mm
oil
$tb
the
(small)
oil
onfmn
be
hook
ation paper under the hook while the sewing machine is
completed
in
ftve seconds.(Check the period
amount
1 )
li:
00
t
'F
jj:);:::tj
(
~~ct
r5~~11i~£.)
2)
~ik
O!b
I )The amount
should
processes. Be careful not
decrease the amount
of
oil is too small, the hook will be seized (the hook
of
oil
#ttH~
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~
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-fJH/ff
~ ~ 1t~
J
JQ~(f;ty
~~.~-~--
~)
be
.
(~~).~ti1$~.~
JSY1
ifH.A
3 (
J;:
0 5i0
of
oil shown
finely adjusted in accordance with sewing
in
the samples on the left
to
excessivel y increase I
of
oil in the hook.(If the amount
of
if.j
.tW
l1it
• m
:1:$)
5£~-ft.
time wi
t.E
~
.
th
/F
in
a
Jl:
M.~~~~l±l*rfJith
Splashes
__jj.
)tb:!i~ ~ <;~)
Appropriate :amount
s.m#a<J~~:!Jf!
...
&¥±~
~
~
WARNING:
Turn
OFF the
of
the sewing machine.
of
oil
from
the hook
I -
1.5
mm
of
oil
(large)
I ATTACHING THE NEEDLE
~Tm~•m•~
power
before
starting
will be hot).
sewing product may be stained
2)Adjust the amount
amount (oil splashes) should not change while
checking the oil amount three times (on the three
sheets
of
paper)
If
the amount
of
of
oil is too much, the
with oil.)
oil in the hook so that the oil
•*m~~~•*•~~~•ff•~·
the
work
so as to prevent accidents caused by
abrupt
start
8
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DBxl ~ DPx5
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A needle
type
of
I)
TWTI
2)
Loosen
3)
Insert the needle fully into the hole
~.m~
a:t. W~*m*[!!J~.iJinlmrn.
of
DBx I or DPx5 should
material used.
the
hand
wheel until the needle
screw ®,and hold needle
~~~w•*•~~~••
be
used.
Select
bar reaches
CD
with its indented part @ facing exactly to the right
in
the
:fr~:i*
1 )
2)
3 )
4)
5)
~ilt
~
({-]
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o
a proper needle size according
the highest
needle
bar
point
of
in the direction
its
stroke
of
to
the count
.
the arrow until the end
of
thread and the
in
direction ®.
of
hole is
reached.
4) Securely tight
5)
Check
(Caution) When filament t
9.
~
~~'
en scr
that long groove ©
the
loop of
occur.
needle with its indented
!i.
~
for
1J
ew
®.
of
hre
thread
the thread
~
the needle
ad is use
becomes un
that
is
facing
d,
if
the
stab
such phenomenon
part
slightly slanting on the
I SETTING
CASE
exactly to the left
indent
ed
part
of
le. As a result, hangnail
is likely to occur, it is effective to attach the
THE
2)
3)~~©~ili~.
BOBBIN INTO
I )
¥~~~C.·, iH:
re~~rl~:Jift-J~:t
152,
h\?2.Bt0J
in
the needle is tilted toward
rear
side.
5!li
direction @.
operator
of
thread
or
thread breakage may
THE
H!lr:~JtB<J/Jr:;J,
LtJL
~IJ®,
~r
rnHI
0
~ ~
®iA•~~~~m~h~~~
1~E;iD{.A;f3l
m1~~1tt:®hltrJ
I I@
.fil.
's
side,
BOBBIN
:/6.
/11 *.
o
I)
In
stall the bobbin in the bobbin
case
so
that
the
t!hread
9
wound
direction is clockwise.
2) Pass the thread through thread slit
®,
and
pull the thread in direction ®.
By
so
doing, the
thread will pass under the tension spring
3) Check tha
10.
I )
Tum
dot
Th
2)
Wh
3)
® in the direct ion
fthe
bobbin rotat
ff:it!
*ll
a<JiAJ
stitch length dial
® on the machine arm.
e dial calibration is in millimeters.
en
you
want to decrease the stitch lenth,
of
es
in the direction
iJ
I ADJUSTING T
CD
in the direction
the arrow.
and
come
out
from notch ®.
of
the arrow when thread © is pulled.
HE
STITCH LENGTH
I )
illWrf
~
:IJ
rtJ
~~i9J~:M
-*"
M
?tUJL
~
(f.J~rL~.
2)
~!Jf.ffiEr-1~-*"~
3)M*tt~~
•H®(f.J~~~i9J~~~~-CD~~-~
of
the arrow, and aligh the desired number to marker
tum
stitch length dial
~~~~J.t~.-rtlft~:IJ~~~~~
CD
while pressing feed lever
iP.li5
®.
mm.
~!JJ.t
fit
CD'
:tHEJi.JT
~
.
Et-J
~
11
.
JliJJ14J
.ffi
jJ
a<J~Ti
£, WARNIN G:
_
Turn OFF
of
the sewing machine.
I)
Loosen nut ®.
will
be
increased.
tum
2) As you
the presser spring regulator counter-clockwise (in direction
I PRESSER FOOT PRESSURE
the
power before startin
As
you
turn
g the
work
presser spring regulator
so as to prevent accidents
1 >
n't.HJ-e:®.
ffit.J~
2)
~
le®1J~~.
3)
ir.J~€.
~--~M~.
32-30mm (40-SON {4-5Kg})
CD
clockwise (in direction
reJI!J141•
5!
.
ffijj~~~
:rr~t'-HJ®
ffi
!J141•Ti~*Et-J~m•J.t©~
®),the
caus
ed by
abrupt
Ti~J(CD
.
.
®),the
pressure will be decreased.
rtJ
:ti
presser foot pressure
sta
®/Jrtl
~,
rt
3)
After adjustment, tighten nut ®
4) For general fabrics, the standard height ©
5K
g}).
of
the presser spring regulator is 32 to 30mm ( 40
10
to
45N { 4
to
12.
_t~~~:JJ~
I THREADING
THE
MACIDNE HEAD
~
~
¥±~
.'
~
WARNING:
Turn
OFF
the
of
the
sewing machine.
~T·k~-m~a*&~~~-~SZfi~-~-~.
power before
starting
the work so as to prevent accidents caused
0
<
tl:
>
(Note)
by
abrupt
::ftJMelft~!lli
Do
not
pass this
thread
through
section().
O
start
$
11
13.
~~~~
1J¥!
I WINDING
THE
BOB
BIN
THREAD
I)
le~·L.•
2)~~-~-~~~~oom~9Y.~re~•~~~
ff
U~:¥1:~!ffh
<D
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iiD
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-
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i8:tr~
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<t:EA)
I)
insert the bobbin deep mto the bobbm wmder spindle
2) Pass the bobbin thread pulled out from the spool rested on the right side
as
times.
counterclockwise the thread coming from the bobbin thread tension several times to wind the bobbin thread
with ease.)
3) Press the bobbin winder trip latch
in the direction
as
4)
Remove the bobbin and cut the bobbin thread with the thread
5) To adjust the winding amotmt
t.
$~~~1Pt,iiHE;ti45lt'l~*iJfl®Z.raJtt~(J(J~~1f1tii~~.
~
~•ff•~~~~.•~•~~Pt.•re~~Mm~~~-~~~*·M~~•
re~~lll
shown in the figure on the left. Th en, wind clockwise the end
(In case
the winding is fmished
-
F*·
CD
until it wi
of
the aluminum bobbin, after winding clockwise the end
® in the direction
of
C and the bobbin thread
of
the bobbin thread, loosen the setscr
is
wound up. The bobbm winder spindle
of
A and
stan
cut
ll
go no further.
of
the thread stand following the order
of
the bobbin thread on the bobbin several
of
the bobbin thread, wind
the sewing machine. The bobbin roatates
<D
automatically as soon
retainer ®.
ew
® and move the bobbin winder
adjusting plate
@ to the direction
of A orB
Then, tighten the setscr
12
ew
@.
To the direction
of
A. Decrease
the direction
To
6)
In case that the bobbin thread is not wound evenly
to
tension
·
It
· Move the position
the winding amount
shown
excessive.
After the
7)To adjust the tension
(Ca
14.
adJust the height
is the standard that the
in
the figure
adjustment.
utio
n)
J.
Wh
bobbin
Wh
2.
needle
hook.
~*.7J
I THREAD TENSION
of
B: increase
of
the thread
center
of
of
the thread tension
of
the bobbin thread
on
the left when the winding amount
tighten
of
en w
inding the
en
winding th
the
nut @.
the bobbin winder,
and
thread
e bo
thread from the thread path of thread take-up
tension d1s
the
bobbin
disk
on
bobbin
thread,
tension disk
bbin
on
k 0 .
is as
high
(J)
to
the direction
the lower part
tum
the
thread tension nut ®.
start
(J)
is tense.
thread
in the s
(I)
the
bobbin, loosen the nut @ and
as
the
center
of
the thread tension
of A as
of
the bobbin
of
the bobbin thread on the upper part
the
winding in the state that the
tate that sewing is not
_t~~j](fj(f]i.flfl
shown in the figure
is
excessive
and
and
performed,
remove the
tum
the bobbin thread
disk
.
on
the left when
to the direction
of
the bobbin
thread
between
remove
bobbin
from the
of
Bas
is
the
the
(t) Adj u
I)
2) As you
3)
4) As you
(2)
I)
st
ing the n
As you turn thread tension No.I nut
thread trimming
turn
As you
Adju
As you
turn
tum
sting the bo
tum
eed
le
thread tension
wt
ll
be
shorter
nut
CD
counterclockwise (in direction
thread
tens
tOn
nut @ counterclockwise (in direction @ ), the needle thread tension will
bbin
thr
ead tension
tension adjust
CD
clockw1se
nut
® clockwise (in direction
screw
® clockwise (in direction
1)
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2)
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.
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be
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be
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.
2)
As you
tum
screw
® counterclockwise (in direction
13
®),the
bobbin thread tension will
be
decreased.
15.
15!~~-
( 1)
Changing
the
/TH
stroke
READ TAKE-
of
thread
take-up
UPS
spring
PRING
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I) Loosen setscrew ®.
2)
As
you tum tension post @ clockwise (in direction @),the stroke
of
the thread take-up spring will be
increased.
3) As you turn the knob counterclockwise (in direction ®),the stroke will be decreased.
(2)
Changing
the
pressure
of
thread
take-up
spring
CD
.
:k.
@.
.
~i;I:J
D!IJ~~!Ji
.
I) Loosen setscrew
2) Loosen setscrew
(
~,and
@.
remove thread tension (asm.) @.
3) As you tum tension post @ clockwise (in direction @), the pressure will be increased.
4) As you tum the post counterclockwise (in direction ®), the pressure will be decreased.
(ti:Alt)
JK8991-DS ,
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When the thread take-up
midway, th
tension
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The
thread take-up
up
to
the last.
of
read
the
is
fed
thread
spr
out from
take-up
ing moves
0 since the
spring
is
O
up
to
high.
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spr
ing works
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14
(Caution)
For
the Models
JK899lDS
and
-DF,
the
fully-dry hook is
adopted
. Comparing with the sewing
machine using
thread
increases. As a result,
To
jud
works
the direction
does not
stroke
general
16.
m
~
ff
&it~
A
--~
WARNING:
Turn
of
the
the
existing hook, the sewing machine tends to be affected by the adjustment
take-up spring .
ge
the
work
of
up to
the
last before needle
of ® after
work
up to
of
the
thread
fabrics, a
1J6
~I
take-up
stro
B<J
~rm~~•moo•*&~~*•*~~~~-~~~-
OFF
the
power before
sewing machin e.
If
the
thread
thread
the
the
ke
breakage,
thread
last,
of
~
tak
e-up
thread
the
pressure
decrea
spring
10 to 13 mm is proper.
is excessively small,
T-i
I ADJUSTING THE THREAD TAKE-UP
starting
take-up
balloon stitching etc. may occur.
spring,
of
se
the
spring
confirm
is pulled
the
thread
pressure
does
not
whether
out
from ® when pulling out needle
take-up
of
the
the
spring
thread
spring
STROKE
the
work
so
as
to prevent accidents caused
of
work
sufficiently,thread running
or
not the thread take-up spring
thread
ha s been performed. When it
take-up
does not work properly. For the
spr
ing. In addition, the
by
abrupt
start
the
in
l
2)•~•M~.re~~-oo~~®~~~~~.m~
3)~~-ro~~~©~-~~~~~~~~~~m
I)
When sewing heavy-weight materials, move thread guide
of
thread pulled
2) When sewing light-weight materials, move thread guide
of
thread pulled out by the thread take-up.
3) Norm ally, thread guide
17.
:tfl.#
&it~
--~
out
by the thread take-up.
ID
is positioned in a way that marker line © is aligned with the center
w.tt{f[•B<J~~
I ADJUSTING
~Tm~~•mooa*&~~~·*~~~~-~-~-
)B~~M~.e~~-
!!~*·
1iE:l
~'J'
.
CD
to the left (in direction
CD
to the right (in direction
THE
NEEDLE STOP POSITION
ID~~®~~~
®)to
increase the length
®)to
decrease the length
of
8~.m~
the screw.
WARNING:
A
Turn
OFF
of
the
sewing machine.
the
power before
start
ing
the
work
so as to prevent accidents caused by
15
abrupt
start
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(1) Stop position
1)
The standard needle stop position is obtained by aligning marker dot ® on the pulley cover with white
marker dot
(In case
2) Stop the needle
A.
Th
B. The needle stop timing is delayed
(
Caut
of
e needle stop timing is advanced
ion)
Do
after
thread
®on
the handwheel.
connecting with
in
its highest position, loosen screw
not
operate
the
trimming
EC-1 OA, adjustment is necessary)
if
you move the scr
if
you move the screw in direction ©.
machine with screw ~ loosened, Just loosen the screw, and do n
(2)
\)
~~•*~~~
*
.R
fm~~ffii
ill
to perform adjustment within the slot
ew
in
direction ©.
"f
w
11:
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of
the screw.
ot remov
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e it.
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(2)
Lower
I ) The lower needle stop position when the pedal is returned to the neutral position after the front part
pedal
Stop needle
Moving the screw
the timing .
(Caution) Do
stop position
is
depressed can be adjusted as follows:
ill
in its lowest position,loosen screw
in
direction ® advances the needle stop timing. Moving the screw
not ope
it.
rate
the
machine with screw ® loosened.
®,
16
~•* ~
*
.R
fm~tl
and make adjustment within the slot
~~~~~~~
ffii~fm
Just
loosen the
~ ~
*.
screw,
~~~mm
in
direction ® delays
and
do not remove
of
the screw.
.~
of
•
the
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