Siruba P717k User manual

R~Jii1~f!iPIIDaJ

KAULIN MFG.CO.,LTn

The specification and/orappearances

of

the equipmentdescribed in

this

instruction

book

and parts

list

are

subjectto

changebecause

of

modification

without

previous notice. ODM14P30.JUNE.2013

P717K/P727K

ffffl

~t3~

=!=W*f1=

li1

INSTRUCTION BOOK&

PARTS LIST

C€

I

~

w.l

®

S~Jii1S3~1l~fJEJ

1&111

KAULIN

MFG.

CO

..

LTD.

From the library of: Superior Sewing Machine & Supply LLC

INSTRUCTION

MANUAL

FOR

POST

-BED

INDUSTRIAL

SEWING

MACHINE

This manual is prepared to permit the sewing machine to be used efficiently and for highest performance.

This machine is post-bed industrial

sewing

machine suitable for sewing shoes, bags, caps and general

leather

works.

You

can either select !-needle

or

2-needle machine according to your type

of

works.

Being equipped with spring return reverse lever type feed mechanism opener type vertical hook, and slide

type thread take-up provides perfect uniformed stitching.

-INDEX-

Specification···...·········...·········...······...·········...·········...······...·········...·········...······...·..······...···2

Mainparts name

of

machine head···...···...···...···...···...···...···...···...···...···...···...···...···...···...···...3

I .Preparation for installation of machine

...........................................................................

4

1). Place of installation of machine

....................................................................................

4

2).

How to mount the machine head ·················································································4

3).

How to mount the

motor"···························

.......

····················

............

···············

··--······4

4).

How to connect the motor lever and foot pedaJ

............................................................

4

5).

How

to mount the bobbin winder assembly..

·························································

..........

4

6).

How to mount and adjust the knee lifter mechanism

...................................................

5

7).

How to mount the oil

pan···························································································

..6

8). How to mount the vibration preventing rubber············.......

··········································

··6

!!.

Preparation for

operation····························································································

·7

1). Selection of

thread································································································7

2). How to attach the

needle·······················································································7

3).

How to lead the upper thread..···············································································8

4).

How to wind the lower thread on the bobbin..

··•·······•····•····•·······•···

..

························9

5). How to adjust the bobbin winder assembly..

···························································

··10

6). How to place the bobbin into the book..

··································································

·11

ill.

How

to

operate······································································································13

1

).

Starting to

sewing·······························································································

·13

2). Sewing

over·····································································································

····13

IV. Stitching

adjustment··············································

..

···..

··········································

·14

1). Adjustment

of

stitch

length·················································································14

2). Forward and Reverse stitching······..

··························

..

··········································14

3).

Adjustment

of

thread tension ··············································································14

4). Adjustment

of

feed dog height and pressure

of

presser

on

matcrials

........................

17

5). Proper timing between the hook and needle...

··················································

....

18

6). Proper timing between the hook and opener..····•··•···•··••··•······•······•··••······•··•···•····21

7). Proper timing between the feed dog and needle..···••···••····•·········••··

.....

··•·····•····•·

·22

V.

Cleaning and Lubrication··

........................................................................................

23

1).

Cleaning············································································································23

2). Lubrication··..

···········································

..

···········································

..

···········23

3).

Grease··················································

......

······•·•·•·······•·•·•······••···•····

......

·····

·····24

P1

From the library of: Superior Sewing Machine & Supply LLC

P2

*Specification and main parts name

of

machine head.

•sPECIFICATION

Sewingmaterials •..·

••

Shoes,Bags,Caps,and

leather

works.

Speed

·

...................

·3000

RPM.

Need1e·······

..............

Dp

x5(135 x

5)

Needle

bar

stroke

......

33.4mm(1-5/16")

Thread

take

up

•

........

Slide

type

Stitch length

............

0-5mm(0-3/16")

Presser

bar

stroke····

..

8mm(5/16")

Presser

foot

............

1-Needle

......

Roller

foot

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

1-Needle(l/16'')Rollerfoot

2-Needle(1/4")Usual foot

Spool

Oil

reservoir(right)

Balance

wheel

Stitchregulating dial

Reverselever

Post

Hook

post

holder

Hook

post

cover plate(back)

Hook

shaftbracket

Slide

plate

Needle

plate

Rollerfoot

Thread

guide(

needle

bar)

Hook

...............

··......

....

Vertical

hook

with

opener

Stitchlength adjustment ···

Dial

regulator type

Reverse

stitching............

Spring

return

manual tacker

Postheight

...........

•

...

·

.....

178mm(7")

Lubrication

.................

• Manual oiling,providedwith

towoil reservoir

at

arm

Oil circulation ·

··

···

...

·

....

· Auto maticcapillarycation

withoilwicks

Knee

mechanism............

Lever system

Thble

...........................

"DN"

type

Motor

...........................

Clutchmotor(400W)

(14)

Needle

bar

(15)

Thread

guide(needle

bar

bushing)

{16)

Presser

bar

(17)

Faceplate

{18)

Thread

tension

regulator

(19)

Thread

guide(

arm)

(20)

Thread

take

up

lever

guard

(21)

Presser

regulating

thumb

screw

(22)

Thread

take

up

lever

{23)

Thread

retainer

(24) Oilreservoir(left)

(25) Pre-tension

UCtiOn

*Main parts name

of

machinehead

(Two

Needle

Type)

(1) Spool

(9)

Hook

shaft

bracket

(17)

Face

plate

(2) Oilreservoir(right) (10) Slide

plate

(18)

Thread

tension regulator

(3)

Balancewheel (11)

Needle

plate

(19)

Thread

guide(

upper)

(4) Stitch regulating dial (12) Rollerfoot

(20)

Thread take

up

lever guard

(5) Reverse lever (13)

Needle

guide (21) Presser regulating thumb screw

(6) Post (14) Presser

bar

(22)

Thread

take

up

lever

(7)

Hook

postcoverplate(lower) (15)

Thread

guide(lower) (23)

Oil

reservoir(left)

(8)

Hook

postcoverplate(upper) {16)

Thread

controller disc (24)

Pre-tension

P3

From the library of: Superior Sewing Machine & Supply LLC

P4

*

Preparation

for

installation

of

machine

head

I

PREPARATION

FOR

INSTAUATlON OF

MACHINE

HEAD

1.

PlACE

OF

INSTAllATION OF MACHINE.

The

machine shoule

be

installed

on

well-

leveled floor in order to ensure smoothoperat-

ing

of

your

machine

at

high speed without

vibration.

2.

HOW TO MOUNT

1HE

MACHINE HEAD

ON

1U

1HE

TABLE.

Instal the hinge with screws, provided in

accessory,at hole

on

the

back

of

the

bed

and

hook to the hinge plate

of

the

table, then

the

headis set

on

thetable.

3.

MOUNTING OF THE MOTOR

+The motor

is

mounted generally with bolts,

nuts,and washers as provided.

+Setthe 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

CONNECT

THE MOTOR

lEVER

AND

FOOT

PEDAL.

+The angle

of

the slope

of

the

pedal can be

important,

It

can make a difference in the

strength necessary

to

press thepedal.

+There might bea slight difference in operator's

posture,but generally30°

-40°

angel as shown

in Fig.(A) is considered best.

+ The treadle position shown in Fig.(B)

will

be

difficult.

In

this case,adjust the length

of

the

connecting rod to suit the operator.

5.

HOW TO MOUNT

1HE

BOBBIN WINDE

ASSEMBLY.

+Set the position

of

the bobbinwinder assembly

provided

in

accessory, to be

in

parallelwith the

belt hole

of

the table, with the lever pushed in

operationposition.

+When bobbin winder pulley will come in contact

with the belt,

fix

the assembly onto the table

with two

screws

provided, as shown

in

Fig.

Hinge

plate Hinge

Motor

pulley

Balancewheel

0

(A)

x

(B)~

UCtiOn

*Preparation

for

installation

of

machine

head

6.

HOW

TO

MOUNf

AND

ADJUST

1HE

KNEE

LIFTER

MECHANISM.

+

The

knee lifter mechanism is employed

to

raise and lower the presser bar.

+ Mount it properly onto the table

by

following

method for easy operation.

+

If

improperly installed, the operating action

will

be

heavy

and

tire theoperator.

1) Place

of

mounting.

+

Make

a

hole

for

knee lifter shatf bracket

Wldemeath

the

table according to Fig.

Shown.

2)

How

to

mount.

(1) Mount the knee lifter. Shaft bracket while

the side

of

hole for spring towards your side

as

shown inFig.

(2)

The

other

side

of

the

knee

lifter shaft

bracket

is screwed so as able

to

insert

the

(3)

On

the knee lifter

shaft,

mount the knee

lifter positionbracket,regulating rod bracket,

knee plate bar bracket, and spring

in

the

order mentioned, then tighten respectively.

(4)

Mount

the kneelifter shaft,

on

which fixed

respective parts,

on

the shaftbracket.

(5) After checking

up

allthe parts and inclina-

tion

of

the knee lifter shaft, tighten the

shaft bracketscrews.

(

6)

The shorter side ofknee plate bar is mounted

on

the bar bracket, and longer side of the

bar

is

mounted on the knee plate.

(7)

The end of spring

is

inserted

into

a hole of

the

shaft

bracket(front).

(8) The other end

of

spring

is

placed

on

the

knee plate

bar

moving it.

(9) After mounting

all

these parts, check

whether the knee lifter mechanism can

be

operated lightly.

'Thble

top

plate

Centerline

of

knee liftershaft

Shaftbracket(front)

I Shaftbracket(back)

I

Knee

lifter

P~tion

bracket

Knee plate

bar

bracket

Rod bracket

Knee plate Kneelifter shaft

P5

From the library of: Superior Sewing Machine & Supply LLC

P6

*Preparation for installation of machine head

3)

Adjustment.

(1)

Place

of

knee

lifter

position

bracket.

Since

the

position

bracket

makes

standardize

the starting point of

knee

plate,

tighten

the

screw

at

the proper

position

so

that

the

stopper

of

position

bracket

come

contact

with

top

underneath

of

the

shaft

bracket

(back).

(2)

Positon

of

the

knee

lifter

bell

crank

regulat-

ing

rod

and

its

bracket.

+

The

regulating

rod

makes

raise

and

down

the

presser

foot

by

means

of

moving

the

bell

crank

lever

up

and

down.

+

While

the

presser

foot

downed,

adjust

the

length

(A)

loosening

the

regulating

rod

screw

so

that

the

rod

and

crank

lever

contacts with as

shown

in

Fig.

7.

HOW TO MOUNT

TilE

OIL

PAN.

Fit

the

oil

pan

with

mails

into

the

hole

bored

in

the

table

so

as

not

to

come

into

contact

with

the

knee

lifter

mechanism.

8.

HOW

TO

MOUNT

1HE

VIBRATION

PREVENTING RUBBER.

The

vibration

preventing

rubber

is

used

to

prevent

the

machine

from

vibrating

and

there-

by

provide

smooth

operation

of

the

maching.

Fit

these

rubber

insulators

properly

at

the

four

comers

of

the

table

as

shown

in

Fig

.

Remember,

the

machine

will

vibrate

if

these

are

not

monnted

properly.

(1)

Hollow

out

four

comers

of

the

table

20mm

radius

and

13mm

depth

to

fit

the

rubber

insulators.

*

Be

sure

to

give

smooth

surface

to

".A:'

where

hollow

out

is

made.

(2)

Nail

the

VIbration

preventing

rubbers

down

at

the

four

comers.

Knee lifter bell cranklever

Knee lifterregulating rod

Nail

II

.

PREPARATION

FOR

OPERATION.

1.

SELECTION

OF

THREAD.

+

For

best

results,

use

high quality machine

thread.

+

For

upper

thread useleft-twist thread.

+

To

check whether a thread is left-twist

or

right-twist, hold the thread as shown is Fig.

and twist the thread held in

the

right hand

toward your side.

If

the thread twistbecomes

loose, the thread is right-twist, and

if

the

thread twist becomes tight the thread is left-

twist.

2.

HOW

TO

ATTACH

THE

NEEDLE.

+ Dpx5(135x5) type needle is recommendable

for general use.

+

But

select

the

needle

size

that

meets

the

requirements

of

the

meterialssewn

and

the

thread

used.

For

One

Needle

Type

(1) While the presser barlifter is raised,

turn

the balance wheel by hand to raise the

needle

bar

to its highest position.

(2) Move therollerfoot

to

theleft as shown in

Fig.

(3)

Loosen the needle clampingscrew.

(4)Hold

the

needle to its sidewith the long

groove side(left). Theninsert theneedle as

deeply it will go into the needle clamping

hole.

(5)

Securely tighten the needleclamping screw.

For

Two

Needle

Type

(1)

While the presser bar lifter

is

raised, turn

the balance wheel

by

handto raise the needle

bar to its highest position.

(2)

Move theroller foot to

the

leftas shown in

Fig.

(3) Loosen

the

needle clamping screw.

(4)

Hold

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

the

needle clampingholes.

(5)

Securely

tighten

the

needle

clamping

screw.

UCtiOn

*Preparation

for

operation

"'-..

Roller foot

~--=~

-

.---.\~

i

~

l

~

('>

"'

~

g:

!

~

c

P7

From the library of: Superior Sewing Machine & Supply LLC

P8

*Preparation

for

operation

*

When

using nylon

or

silk

threads

,

the

loops

may

be

formed

improperly

or

stitch

skipping

may

result

due

to

the

twise

of

these

threads.

In

this case,

observe

the

condition

of

the

loops

and

mount

the

needle

in

a

manner

that

the

needle

hole

would

be

positioned

in

a slightly

oblique

direction.

3.

HOW TO THREAD

TilE

UPPER THREAD.

For

One

Needle

'!YPe

(1) Raise

the

thread

take

up lever

to

its highest

position turning

the

balancewheelby hand.

(2) After

the

presser

bar

lifter is raised, move

the

rollerfoot

to

the

leftholding downward

as

per

arrow shown

in

Fig.

(3)

Thread

in

the

following order:

1 Spool

9

Thread

guide

2 Pre-tension (Needle

bar)

3

Thread

retainer

10

Thread

guide

4 Tension discs

(needle

bar)

5

Thread

take

up

spring

11

Needle

6

Thread

guide(arm)

7

Thread

take

up

8

Thread

guide(arm)

*The

spool

1

with

cross-shaped

hole,

pre-tension

2

and

thread

retainer

3

are

provided

to

prevent

the

thread

from

twist-

ting,

so

follow

as

shown

in

Fig.

*

The

tension

discs 4 consists

of

two

discs,

pass

the

thread

between

these

discs

from

the

right

to

the

left.

*

For

the

thread

take

up

spring

5,

pass

the

thread

from

the

right

to

the

left.

*For

the

take

up

lever 7,

pass

it

from

the

right

to

the

left.

*

For

the

needle

10, pass

it

from

the

left

to

the

right.

Needle

sectional

_plan

§

-- --

.

Incaseof

usual

thread

In

case

of

nylon

&

silk

thread

te===-=

!'ifi"-

--

-

-®

r

--

--®

~~

~

:;:;-----@)

In

case

of

1\vo

Needle

~e

(1) Raise

the

thread e up lever

to

its highest

position turning

the

balancewheel by hand.

(2)

In

case

of

the

rollerfoot,it is same order

as

one

needle type did-move

the

roller foot

to

the

left.

(3) How

to

thread

from

the

cottonstand spool

(left).

L1

Spool pin(left) 6

Thread

take

L2 Threadguide

up

spring

(Upper) 7

Thread

guide

L2'

Threadguide (upper)

pin(right) L8 Thke

up

lever

L3

Pre-tension (upper hole)

(upper) 7 Threadguide

L3'

Threadguide (upper)

pin(left) 9 Threadguide

u Thread tension (lower)

regulator(upper)

LlO

Needle clamp-

l.5 Threadcontroller ing(back)

disc(back) L11 Needle(left)

(4) How

to

thread

from

the

cottonstand spool

(right). 7

Thread

guide

Rl

Spoolpin(right)

R2 Threadguide (upper)

(lower)

R8

Thk.e

up

lever

R3 Pre-tension (lower hole)

(lower) 7 Threadguide

R4

Thread tension (upper)

regulator(lower) 9 Threadguide

R5 Threadcontroller (lower)

disc(

front) R10 Needle clamp-

6 Thread take

up

ing(front)

spring R11 Needle(right)

* 1b

the

pre-tension 3

and

tension regulator

4 threadbetween these discs.

* Th

the

two needles 11.,

Thread

from

the

inside

to

outside.

4.

HOW

TO

WIND

THE

WWER

THREAD

ON

THE

BOBBIN.

(1)

Thread

from

the

spool through

the

lole

of

the

thread

guide 1

to

the

tension discs

2.

(2)

Wmd

the

end

of

the

thread

through

the

tension discs 2

on

the

bobbin

about

5-6

times.

(3) Fit

the

bobbininto

the

bobbin pin 3 in a

manner so that the thread can

be

wound on

the bobbinfrom

the

underside.

(4) Push

the

lever toward

the

otherside so

that

the

pulley

and

the

belt

willengage.

(5) Operate

the

machine so that the thread can

be

wound

on

the

bobbin.

(6)

The

bobbinwinder will automatically

be

free from

the

belt

when

the

bobbinis fully

woundwith thread,

and

stopped.

*

This

operation

can be

done

whileworking.

UCtiOn

*

Preparation

for

operation

• (R2)

(R3)

(R4)

(LS,RS)

(6)

(7)

(9)

(LlO,RlO)

(Lll)

{Rll)

pg

From the library of: Superior Sewing Machine & Supply LLC

P10

*

Preparation

for

operation

5.

HOW

TO

ADJUST

THE

BOBBIN

WINDER

ASSEMBLY.

+

It

is desirable that

the

bobbin

is

wound evenly

with thread as shown in Fig. (A) ,

but

Fig.

(B) & (C) shown are not proper winding.

+ Adjust the bobbin winder assembly in the

following

order

so as able towind

the

thread

onto

the

bobbinproperly.

1)

In

case

of

uneven

winding.

+

In

the event

of

unevenwinding toward the left,

loosen the screw (A) ofthe thread guide, and

adiust it moving the threadguide slightly to

the right.

+

In

the event

of

uneven winding toward

the

right, adjust it moving theguide

to

the left.

+After

adjusted, tighten the screw (A)

of

the

thread guide.

2)

Winding

strength

of

thread.

+ When the thread (Particularlynylon thread)

is

wound too tightly, there

is

a tendency to

unwind thethread on a bobbin.

+ In this case adjust the pressure

of

tension

discs with nut

(B)

so

that

thread can

be

pulled

out smoothly.

2)

Winding

amount

of

thread.

+ Bestresults are obtainedwhen the bobbin is

wound up to

4/5

of its

full

capacity with

thread. Excessive winding willresults inpoor

pull-out

of

the thread.

+ In the event of excessive winding,

tum

the

screw(C) to the left, and

to

the right when

insufficient.

® ©

®®

-Mphlo~

(Adjust

by

sliding right

or

left)

6.

HOW

TO

PLACE

THE

BOBBIN INTO

THE

HOOK.

In

case of One Needle

JYpe

(1) Raise theneedle

bar

to its highest position

turning

the

balance wheel

by

hand.

(2) Move

the

rollerfoot to the left as shown

in

Fig.

(3) Move

the

slide plate.

(4) Turn

up

the

latchlever as shown in Fig.

(

5)

Puil

the

bobbinthreadfor about Scm, hold

it

like in

the

illustration.

(6) Fit

the

bobbin, into

the

hookbase.

(7) Flap down

the

latchlever.

(8) Insert the pulled out thread endthrough

the slit (1) in

the

hookbody.

(9) Fromthe slit

(1)

pass the thread underneath

the hookbody (2) , and pull it to the right

diagonally, and the threadwill pass through

tension spring.

(10) Leave the end ofthread inserted through to

thetension spring

as

it

is.

(11) While holding the end

of

upperthread by

left hand,

tum

thebalance wheel slowly

once aroundby right hand.

(12) Then theupperthreadwill hook

out

the

lower threadsimultaneouslythrough the

hole

of

needleplate, and leave

the

lower

thread to otherside

of

theneedleplate.

(13) After placing thebobbin, close the slide

plate.

UCtiOn

*

Preparation

for

operation

Thread

P11

From the library of: Superior Sewing Machine & Supply LLC

P1

2

*

Preparation

for

operation

In

case

of

1\vo

Needle

'JYpe

(1) Raise

the

needle bar

to

its highest position

turning the balance wheel

by

hand.

(2)

In

the event

of

the

roller foot is attached,

move

it

to

the

left as shown in Fig.

(3) Move the

both

slideplate.

(

4)

Thrn

up

the both

of

the latch lever

as

shown

in

Fig.

(5) Puil

out

the

bobbinthread for about 5 em.

And

hold

the

bobbin.

(6) Fit

the

bobbin into

the

both hook base.

(7) Flap down

the

bothlatch lever

as

it

was.

(8) Insert thepulled thread end through slit (1)

of

thehook.

(9) From the slit (1) of the hook, pass the

thread through underneath

of

the hook

body(2), pull the leftthread to the left and

the right thread

to

theright diagonally and

the thread

will

pass through the tension

spring as shown in

Fig.

(10)

Leave the endofthe thread inserted through

the tension spring

as

it

is.

(11)

While holding the end of 2-upper thread

by

left hand , turn the balance wheel

slowly

once around

by

right hand.

(12)

Then the 2-upper thread will hook out

pulling the lower thread simultaneously

through the hole

of

needle plate, and leave

the lower thread to the otherside of the

needle plate as shown in Fig.

(13) After placing thebobbin, close the both

of

the slide plate.

Thread

Ill

HOW

TO

OPERATE

1.

STARTING

TO SEWING.

(1) Raise thepresser barlifter.

(2) Move backthe roller foot toward your side

as

shown

in

Fig.

Bythe

arrow.

(3) Place starting end ofthe materials for stitching

underthe needles.

(4) Thm

the

balancewheel

by

handtoward your

side to that

the

needle stitches

he

materials.

(5) Lower the presser

bar

lifterand start

to

sew.

*When starting to

sewing,

leave the upper

thread pulled out by

approx.

10cm

in

length

so

that it will not pull out

from

needle.

2.

SEWING OVER.

(1) Stop sewingwhen

the

take

up

lever comes

to

its highest position.

(2) Raise

the

presser (roller

or

ordinary) foot.

(3) Pull

out

the stitched fabrics diagonally

to

the

left side.

(4)

Cut

both upper and lower thread.

*When cutting the thread leave outapprox.

10cm

length

so

thatnext starting

sew

is

convenient foryou

UCtiOn

*

Preparation

for

operation

P13

From the library of: Superior Sewing Machine & Supply LLC

P14

*

Stitching

Adjustment

fV.

STITCHING ADJUSTMENT.

1.

ADJUSTMENT OFSTITCH LENGTII.

+Stitch length can

be

adjustedwith the stitch

regulating dial.

+Figures on the stitch regulating dial indicates

the length in

mm.

When the dial number

is

set

on

thepin of the

arm

it

will

give

your

desired stitch length.

2.

REVERSE STITCHING.

+

Reverse

stitching

can

be

operated

by

means

of

pushing

the

reverse

lever

downward.

While

the

lever

is

pressed

downward,

reverse

stitching

can

be

made.

3.

ADJUSTMENT

OFTHREAD

TENSION.

+The thread

tension

varies

according

to

the

type

of

materials

to

be

sewn,

orthread

used,

and the

length

of

the

stitches

required,

so

adjust

the

tension

accordingly.

+ Ifthe upper and

lower

thread tension are

well

balanced, the

two

threadwill link together

in

the middle of the

fabrice

to

provide

perfect

chain-like

stitches

(A)

as

shown

in

Fig.

+ If,either the upper orlower thread tension

is

too tight,

or

too loose, it

will

give

imperfect

stitches

such

as

(B)

and (C)

as

shown

in

Fig.

+

Fig.

(B)

shows

the upper thread tension

is

too

tight,

and

Fig.

(C)

the upper thread tension

is

too

loose.

•

'Thnsion

ofupper

thread.

Adjustment

ofthe

upper

thread

tension

can

be

achieved

by

changing

the

pressure

of

the

tension

discs

of the

regulator,

as

well

as

the

strength

and

operating

range

of

the

thread

take-up

spring.

In

case

of

One

Needle

"IYPe

1)

Pressure ofthe thread tension

discs.

+ For general fabric stitching, the desired

tension can

be

obtained just

by

adjusting

the pressure

of

the tension

discs.

+ Th strengthe,

turn

the threadtension

nut

to

the right.

+

Th

slacken, turn to theleft.

0®~

X®

~tmliftm419Im~

X©

@J@l@l®!®®i®i

In

case

of

1\vo

Needle

'l.YPe

+ 1b strengthen the pressure ofthread tension

discs,

turn

the therad tension nut to the right

+1b

slacken,

turn

the tension nut to the

left.

2)

Streng

th

of

the

thread take

up

spring.

+ Adjust the strength

of

the take-up spring

according to the materials to be stitched.

+ Standard materiais...............approx.

25g.

+ Light materials

(small

stitch length)

+

Heavy

materials (large stitch length)

strengthen the

spring

...............

approx.

30g.

+

How

to

adjust.

(1)

Leave

the presserbar lifter

down.

(2)

Remove

the

face

plate.

(3)

Loosen the small

screw

inside of the face

plate

as

shown

of the upper thread tension

regulator (one needle

type)

or of the thread

tension controller

(two

needle type).

(

4)

Fit the

screw

driver

into the

groove

of the

thread tension stud, orthread controller

stub,

and

turn the

stud

to the left to strengthen,

and

to

the right

to

slacken.

(5)

After adjusted, tighten the small

screw

and

put the

face

plate back

on.

UCtiOn

*Stitching

adjustment

(Incase ofOne Needle

lYJ>e)

(Incase of

'1\vo

Needle

'JYpe)

P15

From the library of: Superior Sewing Machine & Supply LLC

P1

6

*

Stitching

Adjustment

3) Operating range ofthe thread take

up

spring.

+ In order to obtain proper

working

condition,

it

is

necessary

to adjust the strength ofthe take

up

spring

as

well

as

change the operating

range of the take-up

spring.

+ The operating range can be measured

when

the

take-up

lever

is

at the

highest

position, and

when

the upper thread

is

pulled, and the

tension spring

moves

withinthe

winth

of 8mm,

it

is

considered

as

standard.

e In

case

ofstandand (general

fabrics)

materials.

....

ooapprox.

8mm(5/16

')

e In

case

of

light

(small

stitch

length) materials,

increase the operating range

slightly

..··..··..··

..

ooapprox.

8mm(5/16")

or

up

e In

case

of

heavy

(large stitch length) materials.

decrease the operating range

slightly

.........

......

approx,

8mm(5/16")

or

less

+How

to adjustment (One Needle

'!YPe)

(1)

Lower

thepresser bar lifter.

(2)

Loosen the thread tension regulator set

screw

.

(3)

Fit the

screw

driver

into

the

groove

of the

tension

regulator

stud;

and

turn

the stud to the

right

to

small

the operating

range.

(

4)

Thrn the stud to the left tolarge the operating

rang.

(5)

After adjusted, tighten the

screw.

+

How

to adjust

('Ibw

Needle

'!YPe)

(1)

Loosen the threadcontroller set

screw.

(2)

Fit the

screw

driver

into the

groove

of the

thread controller

stud,

and

turn

the stud to

the

right

to

small

the operating

rang.

(3)

Turn

the stud to the left to rarge the operating

range.

(4)

After adjusted, tighten the

screw.

• Thnslon of

lower

thread.

There

is

virtually

no

need

to

adjust

the

lower

thread

tension,

except

for

special

kind

of

fabrics

or

thresd,

when

slighe

adjustment

will

be

necessary

(1)

'Ibm

the

balance

wheel

by

hand,

and

stop

when

the

thread

take-up

lever

comes

down

to

its

lowest

position.

(2)

Move

the

slide

plate

so

that

you

find

the

thread

tension

screw

of the

hook

base.

(3)

Fit

the

screw

driver

into

the

hole

(A)

of

the

hook

shaft

bradket

as

shown

in

Fig.

Thm

the

tension

screw

to the

right

to

strengthen

the

thread

tension.

(

4)

Turn

the

screw

to the left to

weaken

the

thread tension.

4.

ADJUSTMENT

OF

FEED

DOG

HEIGHT

AND

PRESSURE

OF

PRESSER

ON

MATE-

RIALS.

The

feed

dog

height and pressure ofpresser on

materials

must

beproperly adjusted according to

the materials to

be

sewn.

+In

case

of

light

materials:

The material

may

be

damaged

if

the

feed

dog

is

raised

excessively

or

the pressure of presser on materials

is

too

strong.

+In case of

heavy

materials: It will not make

uniforme stitching

if

the feed dog

is

not raised

properly

or

the pressure of presser

is

too

weak.

In

case oflight materials....

................

....

......

·........ approx.

0.8mm

in height

In

case ofgeneral fabrics·

........

·............

..

·..............

approx.

l.Omm.

in height

In

case of

heavy

materials ..................·..

......

·........ approx.

1.2mm.

in height

*The height

of

feet dog

is

measured when

thefeed dog

is

raised to its highest position

from

the

surface

of

needle plate turning the

balancewheel

by

hand.

1)

Adjustment

of

feed

dog

height.

(1)

Lay down the machine bed toward the

other side.

(2)

Remove

the gear

box.

(3)

'Ibm the balance wheel

by

hand and stop

when

the feed

dog

is

raised toits highest

position from the surface of needle plate.

(

4)

Loosen the

screw

offeed lifting rock shaft

crank.

(5)

Adjust the feed

dog

to

the desired

height

moving

the

feed

lifting

rock

shaft crank

back and forth

as

per

an

arrow

shown

in

Fig.

(6)

After adjusted, tighten the screw of feed

lifting rock shaft.

UCtiOn

*Stitching

adjustment

Threadtension spring

Threadtension

screw

~~

!o.smm

@I

~:

1.2mm

21?

Feed lifting

rock

Screw shaftcrank

P17

From the library of: Superior Sewing Machine & Supply LLC

Siruba P717K User manual

Popular Sewing Machine manuals by other brands