Siruba P717K, P727K User Manual
P717K/P727K
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KAULIN MFG. CO.,LTn
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INSTRUCTION BOOK&
PARTS LIST
I
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The specification and/or appearances
list
are
subjectto
change because
of
the equipment described in
of
modification
without
this
previous notice. ODM14P30.JUNE.2013
instruction
book
and parts
C€
w.l
®
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1&111
KAULIN
MFG.
CO
..
LTD.
INSTRUCTION
This manual is prepared to permit the sewing machine to be used efficiently and for highest performance.
This machine
leather
Being equipped with spring return reverse lever type feed mechanism opener type vertical hook, and slide
type thread take-up provides perfect uniformed stitching.
works.
MANUAL
is post -bed industrial
You
can either select !-needle
FOR
sewing
POST
-BED
machine suitable for sewing shoes, bags, caps and general
or
2-needle machine according to your type
INDUSTRIAL
SEWING
MACHINE
of
works.
-INDEX-
Specification··· ... ········· ... ········· ... ······ ... ········· ... ········· ... ······ ... ········· ... ········· ... ······ ... · .. ······ ... ··· 2
Main parts name
of
machine head··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... ··· ... 3
I .Preparation for installation of machine
1 ). Place of installation of machine
2).
How to mount the machine head ·· ···· ··· ··· ··· ···· ······· ··· ··· ···· ··· ··· ···· ··· ··· ···· ··· ··· ···· ··· ··· ······· · ·4
3).
How to mount the
4).
How to connect the motor lever and foot pedaJ
5).
How
to mount the bobbin winder assembly ..
6).
How to mount and adjust the knee lifter mechanism
7).
How to mount the oil
8). How to mount the vibration preventing rubber············ .......
!!.
Preparation for
1). Selection of
2). How to attach the
3).
How to lead the upper thread .. ···············································································8
4).
How to wind the lower thread on the bobbin ..
5). How to adjust the bobbin winder assembly ..
6). How to place the bobbin into the book ..
ill.
How
to
operate······································································································13
1
).
Starting to
2). Sewing
IV. Stitching
1). Adjustment
2). Forward and Reverse stitching······ ..
3).
Adjustment
4). Adjustment
5). Proper timing between the hook and needle ...
6). Proper timing between the hook and opener .. ····•··•···•··••··•······•······•··••······•··•···•· ···21
7). Proper timing between the feed dog and needle .. ···••···••····•·········••··
over·····································································································
adjustment··············································
motor"···························
pan···························································································
operation····························································································
thread································································································7
needle·······················································································7
sewing·······························································································
of
stitch
length·················································································14
of
thread tension ··············································································14
of
feed dog height and pressure
...........................................................................
....................................................................................
.......
····················
............................................................
·························································
...................................................
··•·······•····•····•·······•···
···························································
··································································
..
··· ..
··········································
··························
of
··················································
..
presser
............
··········································
···············
..
························9
··········································14
on
matcrials
........................
.....
··•·····•····•·
4
4
··--······4
4
..........
.. 6
··6
·7
··10
·11
·13
····13
·14
17
....
18
·22
4
5
V.
Cleaning and Lubrication··
1).
Cleaning············································································································23
2). Lubrication·· ..
3).
Grease··················································
···········································
........................................................................................
..
···········································
......
······•·•·•·······•·•·•······••···•····
..
···········23
......
·····
23
·····24
P1
UCtiOn
* Specification and main parts name
•sPECIFICATION
Sewing materials • .. ·
Speed · ...................
Need1e·······
Needle
Thread
Stitch length
Presser
Presser
bar
take
bar
foot
..............
stroke
up • ........
............
stroke····
............
••
Shoes,Bags,Caps,and
works.
· 3000
RPM.
Dp
x 5(135 x
......
33.4mm(1-5/16")
Slide
type
0-5mm(0-3/16")
..
8mm(5/16")
1-Needle
1-Needle(l/16'')Roller foot
2-Needle(1/4")Usual foot
......
5)
Roller
of
machine head.
leather
foot
Hook
...............
Stitch length adjustment · · ·
Reverse
Post height
Lubrication
Oil circulation ·
Knee
Thble
Motor
stitching............
mechanism............
...........................
...........................
··......
....
........... • ... · .....
.................
··
···
... · ....
Vertical
Dial
Spring
178mm(7")
• Manual oiling, provided with
tow oil reservoir
· Auto matic capillary cation
with oil wicks
Lever system
"DN"
Clutch motor( 400W)
hook
with
regulator type
return
manual tacker
at
type
opener
arm
(Two
Needle
* Main parts name
Type)
of
machine head
Spool
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
pin
Oil
reservoir( right)
Balance
Stitch regulating dial
Reverse lever
Post
Hook
post
Hook
post
Hook
shaft bracket
Slide
plate
Needle
Roller foot
Thread
wheel
holder
cover plate(back)
plate
guide(
needle
bar)
Needle
(14)
(15)
Thread
{16)
Presser
Faceplate
(17)
{18)
Thread
(19)
Thread
(20)
Thread
(21)
Presser
Thread
(22)
Thread
{23)
(24) Oil reservoir(left)
Pre-tension
(25)
P2
bar
guide( needle
bar
tension
guide(
take
regulating
take
retainer
regulator
arm)
up
lever
up
lever
thumb
bar
bushing)
guard
screw
(1) Spool
(2) Oil reservoir( right)
(3)
(4)
(5) Reverse lever
(6)
(7)
(8)
pin
Balance wheel
Stitch regulating dial
Post
Hook
post cover plate(lower)
Hook
post cover plate( upper)
(9)
Hook
shaft
Slide
(10)
(11)
(12) Roller foot
(13)
(14)
(15)
{16)
plate
Needle
Needle
Presser
Thread
Thread
plate
guide (21) Presser regulating thumb screw
bar
guide(lower) (23)
controller disc
bracket
(17)
(18)
(19)
(20)
(22)
(24)
Face
plate
Thread
Thread
Thread take
Thread
Oil
Pre-tension
tension regulator
guide(
take
reservoir(left)
upper)
up
lever guard
up
lever
P3
*
Preparation
I
PREPARATION
MACHINE
1.
PlACE
The
leveled floor in order to ensure smooth operat-
ing
vibration.
2.
HOW TO MOUNT
ON
1U
Instal the hinge with screws, provided in
accessory,at hole
hook to the hinge plate
head is set
3.
MOUNTING OF THE MOTOR
+ The motor
nuts,and washers as provided.
for
installation
FOR
of
machine
INSTAUATlON OF
HEAD
OF
INSTAllATION OF MACHINE.
machine shoule
of
your
machine
1HE
TABLE.
on
the table.
is
mounted generally with bolts,
on
be
installed
at
high speed without
1HE
MACHINE HEAD
the
back
of
the
of
the
table, then
on
bed
well-
+ Set the position so that the motor pulley and
balance wheel grooves are aligned straight as
shown in Fig. For proper operation when the
belt
is
inserted.
+ Then connect power supply cord and motor .
cord extened from switch.
4.
HOW TO
AND
+ The angle
important,
strength necessary
CONNECT
FOOT
THE MOTOR
PEDAL.
of
the slope
It
can make a difference in the
to
of
the
pedal can be
press the pedal.
lEVER
+ There might be a slight difference in operator' s
30°
-40°
posture,but generally
in Fig.(A) is considered best.
+ The treadle position shown in Fig. (B)
In
difficult.
connecting rod to suit the operator.
5.
HOW TO MOUNT
this case,adjust the length
1HE
angel as shown
will
of
BOBBIN WINDE
ASSEMBLY.
+ Set the position
provided
belt hole
operation position.
in
of
the bobbin winder assembly
accessory, to be
of
the table, with the lever pushed in
in
parallel with the
+ When bobbin winder pulley will come in contact
with the belt,
with two
fix
the assembly onto the table
screws
provided, as shown
in
Fig.
head
and
the
be
the
Hinge
0
x
plate
Motor
Balance wheel
(A)
Hinge
pulley
(B)~
6.
HOW
KNEE
+
+ Mount it properly onto the table
+
1) Place
+
2)
(1) Mount the knee lifter. Shaft bracket while
(2)
(3)
( 4)
(5) After checking
(
(7)
(8) The other end
(9) After mounting
TO
MOUNf
LIFTER
The
knee lifter mechanism is employed
raise and lower the presser bar.
method for easy operation.
If
improperly installed, the operating action
will
be
heavy
and
of
mounting.
Make a hole
Wldemeath
How
to
the side
as
shown in Fig.
The
bracket
On
the knee lifter
lifter position bracket,regulating rod bracket,
knee plate bar bracket, and spring
order mentioned, then tighten respectively.
Mount
respective parts,
tion
shaft bracket screws.
6)
The shorter side of knee plate bar is mounted
on
the bar bracket, and longer side of the
bar
is
The end of spring
shaft
the
knee plate
whether the knee lifter mechanism can
operated lightly.
the
mount.
of
hole for spring towards your side
other
of
side
is screwed so as able
the knee lifter shaft,
the knee lifter shaft, tighten the
mounted on the knee plate.
bracket(front).
bar
AND
ADJUST
MECHANISM.
by
following
tire the operator.
for
knee lifter shatf bracket
table according to Fig.
of
the
knee
lifter shaft
to
insert
shaft,
mount the knee
on
which fixed
on
the shaft bracket.
up
all the parts and inclina-
is
inserted
of
spring
moving it.
all
into
a hole of
is
placed
these parts, check
* Preparation
1HE
to
Shown.
the
in
the
on
the
be
for
Center line
Knee plate
Knee plate
installation
of
knee lifter shaft
Shaft bracket(front)
of
machine
'Thble
I Shaft bracket(back)
I
Knee
lifter
P~tion
bar
bracket
Rod
bracket
Knee lifter shaft
top
bracket
UCtiOn
head
plate
P4
P5
UCtiOn
* Preparation for installation of machine head
3)
Adjustment.
(1)
Place
of
knee
lifter
position
Since
the
position
the starting point of
screw
stopper
with
at
the proper
of
top
underneath
bracket
position
knee
bracket
(back).
(2)
Positon
ing
+
The
presser
crank
+
While
length
screw
contacts with as
7.
HOW TO MOUNT
Fit
the
the
8.
HOW
PREVENTING RUBBER.
The
prevent
by
Fit
four
Remember,
are
(1)
of
rod
and
regulating
foot
lever
the
(A)
so
the
oil
pan
table
so
knee
lifter
TO
vibration
the
provide
these
comers
not
monnted
Hollow
radius
the
knee
its
bracket.
rod
by
means
up
and
presser
loosening
that
the
shown
with
as
not
mechanism.
MOUNT
preventing
machine
smooth
rubber
of
the
the
machine
properly.
out
four
and
13mm
lifter
makes
down.
foot
rod
TilE
mails
to
from
operation
insulators
table
comers
depth
insulators.
*
Be
sure
to
give
smooth
(2)
where
Nail
at
the
the
hollow
out
VIbration
four
comers.
is
preventing
position
of
in
come
made.
bracket.
makes
plate,
come
the
shaft
bell
crank
raise
of
moving
downed,
the
regulating
and
Fig.
OIL
into
the
into
1HE
rubber
vibrating
of
properly
as
shown
will
vibrate
of
the
to
fit
surface
standardize
tighten
so
that
the
the
contact
bracket
regulat-
and
down
the
the
bell
adjust
the
rod
crank
hole
the
table
rubbers
lever
PAN.
bored
in
contact
VIBRATION
is
and
with
used
there-
to
maching.
at
the
in
Fig
if
these
20mm
the
rubber
to
".A:'
down
.
Knee lifter bell crank lever
Knee lifter regulating rod
Nail
II
.
PREPARATION
1.
SELECTION
+
For
best
results,
thread.
+
For
upper
+
To
check whether a thread is left-twist
right-twist, hold the thread as shown is Fig.
and twist the thread held
toward your side.
loose, the thread is right-twist, and
thread twist becomes tight the thread is left-
twist.
2.
HOW
TO
ATTACH
FOR
OPERATION.
OF
THREAD.
use
high quality machine
thread use left-twist thread.
in
the
right hand
If
the thread twist becomes
THE
NEEDLE.
+ Dpx5(135x5) type needle is recommendable
for general use.
+
But
For
For
One
Two
select
requirements
thread
Needle
(1) While the presser bar lifter is raised,
the balance wheel by hand to raise the
needle
(2) Move the roller foot
Fig.
(3)
Loosen the needle clamping screw.
( 4) Hold
groove side(left). Then insert the needle as
deeply it will go into the needle clamping
hole.
(5)
Securely tighten the needle clamping screw.
Needle
(1)
While the presser bar lifter
the balance wheel
bar to its highest position.
(2)
Move the roller foot to
Fig.
(3) Loosen
Hold
( 4)
side
other),
into
(5)
Securely
the
used.
needle
of
the
size
that
meterials sewn
Type
bar
to its highest position.
to
the left as shown in
the
needle to its side with the long
Type
is
by
hand to raise the needle
the
left as shown in
the
needle clamping screw.
the
needles so
with
the
and
insert
the
needle clamping holes.
tighten
that
the
long grooved (faces each
it
as
deeply
the
needle
clamping
meets
and
raised, turn
two needles
as
it
or
if
the
the
the
turn
will
go
screw.
i
l
~
!
~
~
('>
"'
g:
~
c
* Preparation
"'-..
Roller foot
for
operation
~--=~
-
.---.\~
P6
P7
UCtiOn
* Preparation
*
When
loops
skipping
these
condition
needle
would
direction.
3.
HOW TO THREAD
For
One
(1) Raise
position turning
(2) After
the
as
(3)
Thread
for
using nylon
may
may
threads.
in a manner
be
positioned
Needle
the
the
roller foot
per
arrow shown
in
1
Spool
be
of
thread
pin
2 Pre-tension (Needle
3
Thread
4 Tension discs
5
Thread
6
Thread
7
Thread
8
Thread
*The
*
*
*For
*
spool
pin 1 with
pre-tension 2 and
provided
ting,
The
pass
the
For
thread
right
For
the
so
follow
tension
the
right
the
from
the
to
the
the
needle
right.
to
thread
to
thread
the
take
operation
or
silk
formed
result
In
the
improperly
due
to
this case,
loops
TilE
and
that
in
a slightly
UPPER THREAD.
'!YPe
take
up lever
the
balance wheel by hand.
presser
the
retainer
take
guide( arm)
take
guide( arm)
prevent
as
discs 4 consists
the
up
left.
bar
lifter is raised, move
to
the
left holding downward
in
Fig.
following order:
up
spring
up
cross-shaped
thread
the
thread
shown
between
take
right
10, pass
left.
up
to
the
lever 7,
in
spring
it
Fig.
these
left.
pass
threads , the
or
stitch
the
twise
observe
mount
the
needle
to
9
Thread
10
Thread
(needle
11
Needle
retainer 3 are
of
it
from
hole
oblique
its highest
guide
bar)
guide
bar)
hole,
from
twist-
two
discs,
discs
from
5,
pass
from
the
left
of
the
the
the
the
to
Needle
sectional
-- --
§
Incase of
usual
thread
_plan
.
In
&
te===-=
!'ifi"-
--
-
-®
r
--
~~~:;:;-----@)
--®
case
silk
of
nylon
thread
In
case
of
1\vo
(1) Raise
position turning
In
(2)
one
the
(3) How
(left).
L1
Spool pin(left)
L2 Thread guide
L2'
Thread guide
L3
Pre-tension
L3'
Thread guide
u
Thread tension
Needle
the
thread e up lever
case
of
the
needle type did-move
left.
to
thread
(Upper) 7
pin( right)
(upper)
pin(left)
regulator( upper)
l.5 Thread controller
disc(back) L11 Needle(left)
( 4) How
Rl
R2 Thread guide
R3 Pre-tension
R4
R5 Thread controller
6 Thread take
*
1b
4 thread between these discs.
*
Th
inside
4.
HOW
THE
(1)
(2)
(3) Fit
(4) Push
(5) Operate
(6)
*
to
thread
(right).
Spool pin( right)
(lower)
(lower)
Thread tension
regulator(lower)
disc(
front)
spring
the
pre-tension 3
the
two needles 11.,
to
outside.
TO
WIND
BOBBIN.
Thread
the
Wmd
tension discs 2
times.
manner so that the thread can
the bobbin from
the
be
The
free from
wound with thread,
This
from
thread
the
pulley
wound
operation
guide 1
the
end
bobbin into
the
lever toward
and
the
on
bobbin winder will automatically
the
~e
the
balance wheel by hand.
roller foot,it is same order
from
the
6
L8 Thke
to
its highest
as
the
roller foot
cotton stand spool
Thread
up
spring
Thread
(upper)
up
(upper hole)
to
take
guide
lever
7 Thread guide
(upper)
9 Thread guide
(lower)
Needle clamp-
LlO
ing(back)
from
the
cotton stand spool
7
Thread
R8
(upper)
Thk.e
(lower hole)
guide
up
lever
7 Thread guide
(upper)
Thread guide
9
(lower)
R10 Needle clamp-
up
and
THE
WWER
the
spool through
to
of
the
on
the
the
underside.
the
belt
machine so that the thread can
the
bobbin.
belt
when
and
can be
ing(front)
R11 Needle(right)
tension regulator
Thread
from
the
THREAD
the
lole
the
tension discs
thread
the
the
will engage.
done
through
bobbin
bobbin pin 3 in a
be
other side so
the
bobbin is fully
stopped.
while working.
the
about
5-6
wound on
that
ON
of
2.
be
•
*
Preparation
for
(R2)
(R3)
(R4)
(LS,RS)
(6)
(7)
(9)
(LlO,RlO)
(Lll)
{Rll)
operation
P8
pg
*
Preparation
5.
HOW
TO
ADJUST
for
operation
THE
BOBBIN
WINDER
ASSEMBLY.
+
It
is desirable that
with thread as shown in Fig. (A) ,
(B) & (C) shown are not proper winding.
+ Adjust the bobbin winder assembly in the
following
onto
1)
In
+
In
the event
loosen the screw (A) of the thread guide, and
adiust it moving the thread guide slightly to
the right.
+
In
right, adjust it moving the guide
+After
thread guide.
2)
Winding
+ When the thread (Particularly nylon thread)
is
wound too tightly, there
unwind the thread on a bobbin.
+ In this case adjust the pressure
discs with nut
out smoothly.
2)
Winding
order
the
bobbin properly.
case
of
uneven
the event
adjusted, tighten the screw (A)
strength
amount
the
bobbin
so as able to wind
is
wound evenly
but
the
winding.
of
uneven winding toward the left,
of
uneven winding toward
to
the left.
of
thread.
is
a tendency to
of
(B)
so
that
of
thread.
thread can
be
+ Best results are obtained when the bobbin is
wound up to
thread. Excessive winding
pull-out
+ In the event of excessive winding,
screw(C) to the
insufficient.
of
4/5
the thread.
left, and
of its
full
capacity with
will results in poor
to
the right when
tum
Fig.
thread
the
of
the
tension
pulled
the
® ©
®®
-Mphlo~
(Adjust
by
sliding right
or
left)
6.
HOW
TO
PLACE
THE
BOBBIN INTO
HOOK.
In
case of One Needle
(1) Raise the needle
the
turning
(2) Move
in
Fig.
(3) Move
( 4) Turn
5)
(
( 6) Fit
Puil
it
like in
up
the
the
(7) Flap down
(8) Insert the pulled out thread end through
the slit (1) in
(9) From the slit
the hook body (2) , and pull it to the right
diagonally, and the thread
tension spring.
(10) Leave the end of thread inserted through to
the tension spring
(11) While holding the end
left hand,
once around by right hand.
(12) Then the upper thread will hook
lower thread simultaneously through the
hole
thread to other side
(13) After placing the bobbin, close the slide
plate.
balance wheel
the
roller foot to the left as shown
the
slide plate.
the
latch lever as shown in Fig.
bobbin thread for about Scm, hold
the
illustration.
bobbin, into
the
the
(1)
tum
of
needle plate, and leave
JYpe
bar
to its highest position
by
the
hook base.
latch lever.
hook body.
pass the thread underneath
will pass through
as
it
is.
of
upper thread by
the balance wheel slowly
of
the needle plate.
hand.
out
the
lower
THE
the
Thread
*
Preparation
for
operation
UCtiOn
P10
P11
*
Preparation
In
case
of
(1) Raise
turning the balance wheel
1\vo
the
for
operation
Needle
needle bar
'JYpe
to
its highest position
by
hand.
Ill
HOW
1.
TO
OPERATE
STARTING
(1) Raise the presser bar lifter.
TO SEWING.
*
Preparation
for
operation
UCtiOn
(2)
In
the event
move
(3) Move the
(
4)
Thrn
shown
( 5) Puil
(6) Fit
(7) Flap down
(8) Insert the pulled thread end through slit (1)
(9) From the slit (1) of the hook, pass the
out
And
hold
the
of
the hook.
thread through underneath
body(2), pull the left thread to the left and
the right thread
the thread
spring as shown in
of
the
roller foot is attached,
it
to
the
left as shown in Fig.
both
slide plate.
up
the both
in
Fig.
the
bobbin thread for about 5 em.
the
bobbin into
the
will
of
the latch lever
bobbin.
the
both hook base.
both latch lever
to
the right diagonally and
pass through the tension
Fig.
as
of
the hook
it
as
was.
Thread
(2) Move back the roller foot toward
shown
in
Fig.
By the
(3) Place starting end of the materials for stitching
under the needles.
Thm
the
( 4)
side
(5) Lower the presser
balance wheel
to that
the
* When starting to
thread pulled out
length
so
that it will not pull out
arrow.
by
needle stitches
bar
lifter and start
sewing,
by
approx.
your side
hand toward your
he
materials.
leave the upper
10cm
needle.
2.
SEWING OVER.
(1) Stop sewing when
its highest position.
the
take
up
lever comes
to
sew.
in
from
as
to
(10)
Leave the end of the thread inserted through
P1
2
the tension spring
(11)
While holding the end of 2-upper thread
left hand , turn the balance wheel
once around
(12)
Then the 2-upper thread will hook out
pulling the lower thread simultaneously
through the hole
the lower thread to the other side of the
needle plate as shown in Fig.
(13) After placing the bobbin, close the both
the slide plate.
as
it
is.
by
right hand.
of
needle plate, and leave
by
slowly
of
(2)
Raise
the
(3)
Pull
left side.
(4)
Cut
presser (roller
out
the stitched fabrics diagonally
both upper and lower thread.
or
ordinary) foot.
to
the
* When cutting the thread leave out approx.
10cm
convenient for you
length
so
that next starting
sew
is
P13
*
Stitching
fV.
STITCHING ADJUSTMENT.
1.
ADJUSTMENT OF STITCH LENGTII.
+ Stitch length can
Adjustment
regulating
dial.
be
adjusted with the stitch
+ Figures on the stitch regulating dial indicates
mm.
the length in
set
on
the pin of the
desired stitch length.
2.
REVERSE STITCHING.
+
Reverse
pushing
lever
can
3.
ADJUSTMENT
+ The thread
of
length
tension
stitching
the
is
pressed
be
made.
materials
of
accordingly.
tension
the
+ If the upper and
balanced, the
the middle of the
chain-like
stitches
When the dial number
arm
it
can
be
operated
reverse
lever
downward.
downward,
reverse
OF THREAD
varies
according
to
be
sewn,
or thread
stitches
two
required,
lower
thread tension are
thread will link together
fabrice
(A)
as
to
shown
will
give
by
means
While
stitching
TENSION.
to
the
used,
and the
so
adjust
provide
in
perfect
Fig.
+ If,either the upper or lower thread tension
too tight,
stitches
+
Fig.
tight,
too
loose.
•
'Thnsion
Adjustment
achieved
tension
strength
take-up
In
case
of
1)
Pressure of the thread tension
+ For general fabric stitching, the desired
tension can
the pressure
+ Th strengthe,
the right.
+
Th
slacken, turn to the left.
such
(B)
shows
and
One
or
too loose, it
as
(B)
the upper thread tension
Fig.
(C)
the upper thread tension
of upper
of the
upper
by
changing
discs
of the
and
operating
spring.
Needle
will
and (C)
thread.
thread
the
regulator,
range
"IYPe
discs.
be
obtained just
of
the tension
turn
the thread tension
give
imperfect
as
shown
tension
pressure
as
well
of
the
by
adjusting
discs.
in
is
can
of
as
thread
nut
is
your
of
the
type
the
well
in
is
Fig.
too
is
be
the
the
to
0®~
X®
X©
~tmliftm419Im~
@J@l@l®!®®i®i
In
case
of
1\vo
Needle
'l.YPe
+ 1b strengthen the pressure of thread tension
discs,
turn
the therad tension nut to the right
+ 1b
+ Adjust the strength
slacken,
2)
Streng
according to the materials to be stitched.
th
of
turn
the
the tension nut to the
thread take
up
spring.
of
the take-up spring
+ Standard materiais ............... approx.
+ Light materials
+
Heavy
strengthen the
+
How
(1)
(2)
(3)
plate
(
4)
thread tension stud, or thread controller
and
and
(5)
materials (large stitch length)
to
adjust.
Leave
the presser bar lifter
Remove
Loosen the small
regulator (one needle
tension controller
Fit the
After adjusted, tighten the small
put the
the
as
shown
screw
turn the
to
the right
face
(small
stitch length)
spring
...............
face
plate.
screw
inside of the face
of the upper thread tension
type)
(two
needle type).
driver
stud
plate back
into the
to the left to strengthen,
to
slacken.
on.
approx.
down.
or of the thread
groove
screw
of the
left.
25g.
30g.
stub,
and
*Stitching
(In case of One Needle
(In case of
'1\vo
Needle
UCtiOn
adjustment
lYJ>e)
'JYpe)
P14
P15
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