Juki M0-6000S, M0-6900G, M0-6900R, M0-6900J User Manual

a.JUKI®

Super-High-Speed Ovel1ock Machine High-Speed Ovel1ock Machine/ Safety Stitch Machine

M0-6000S

M0-6900G

High-Speed Variable Top

M0-6900R series

M0-6900J

ENGINEER'S MANUAL

·~:-·

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series

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series

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29355807

No.E350-01

PREFACE

This Engineer's Manual is written for the technical personnel who are responsible for the service and maintenance of the machine. The Instruction Manual for these machines intended for the maintenance personnel and operators at an apparel factory contains operating instructions in detail. And this manual describes "Standard Adjustment", "Adjustment

of

Procedures", "Results

Manual.

It is advisable to use the relevant Instruction Manual and Parts List described below together with this Engineer's

Manual when carrying out the maintenance of these machines.

In addition, for the motor for the sewing machine with thread trimmer, refer to the separate Instruction Manual Engineer's Manual for the motor. And for the control panel, refer to the Instruction Manual for the control panel.

This manual gives the "Standard Adjustment" on the former page under which the most basic adjustment value

described, and from mechanical failures are described together with the

on

Improper Adjustment", and other important information which are not covered by the Instruction

or

is

the latter page "Results of Improper Adjustment" under which stitching errors and troubles arising

CIAdjustment

Procedures".

ii

ll

11

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MO·6900S MO-6700S

N

~

Instruction Manual 29351707 Parts List 29351806 29352408

Part No.

Part No. Part No. Part No. Part No.

29351707 29351707 29356409 29363009

MO·6900G

29352309 29356201

MO·6900R MO·6900J

29362803

CONTENTS

1. SPECIFICATIONS ....... _ ...•....•..•••.•.••••...•••..••••.••.••••••..•.••...••..•........•..•••.•..•••.••.•... 1

(1) MO-6700S SERIES ........................................................................................................... 1

(2) MO-6900S SERIES ........................................................................................................... 2

(3) MO-6900G SERIES

( 4) MO-6900R SERIES •.••.•••••••••••.••••.•••.••••••••.•••••.......•.•..••..•••...•.......•.•.•••.•.••..•...•..••.....•.•.•...• 4

(5) MO-6900J SERIES ............................................................................................................. 5

2. MODEL NUMBERING SYSTEM ..••.••.•••..••••...••...•.•••••••.•••.•..•.••.•...•..•...••.•...•..... 6

3. STANDARD ADJUSTMENT ....••.•.•.•..•••..•.••••.••••••....•......•..•.•••.••......•.•.••.••.....•.. 8

(1)

Adjusting

(2)

Positioning

(3)

Installing

(4)

Adjusting (Applicable

(5)

Adjusting

1)

Returning amount of the lower looper .................................................................................................... 12

2)

Clearance between the lower looper and the needle .............................................................................

(6)

Position

(7)

Positioning

(8)

Positioning

1) Height of the upper looper .................................................................................................

2) Longitudinal position

(9)

Adjusting

· (Applicable

1) Returning amount of the double chain looper .........................................................................................

2) Longitudinal motion {Avoid motion) ........................................................................................................

3) Clearance between the double chain looper and the needle ................................................................. 20

(10)

Adjusting

1) For 1-needle

2) For safely stitch machine ........................................................................................................................

(11)

Adjusting

(12)

Adjusting

(13)

Adjusting

(14)

Longitudinal

(15)

Adjusting

1) Adjusting the tilt of the presser foot ........................................................................................................

2) Adjusting the micro-lifting mechanism of the presser foot ......................................................................

(16)

Positioning

(17)

Positioning

1)

lower

2) Upper knife ............................................................................................................................................. 30

3) Overdging width ......................................................................................................................................

(18)

Resharpening

(19)

Position

1) Adjustment of the thread cam ............................................. : ................................................................... 32

2) Adjusting looper thread cam thread guides A and B and the looper thread cam nail ............................. 32

the

position

the

only

the

of

the

the the

the

only

the

or

the the the

the

knife ............................................................................................................................................. 30

of

the

•••••••..•••••••..•••••••...••••••..••••..••••.•••••.•.•••.•....•.••...•••••...•.•••••.•.•.•.•••.•.•.•••.•.

needle

length

lower

upper

double

height

2-needle overlock machine ........................................................................................... 22

tillt

position

the the

height

throat

of

the

of

to

MO-6.616S / MO-6916R, G, J

looper

looper upper upper

of

the upper looper ................................................................................................ 18

chain

to

M0-6~

height

of

the

differential presser

upper upper

of

the

thread

............................................................................................ 8

plate

............................................................................................ 8

needle Clamp .......................................................................

the

lower

._

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

looper looper

guide

holder

looper

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

holder

series)

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

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

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

~

.................... 18

looper

16S/MO-6916R, G, J series) ............................................... 20

and

clearance

of

the

feed

dog

feed

of

the

feed

foot

.......................................................................................... 28

knife

arm

and

lower

knife

.......................................................................................... 32

cam

(Applicable

of

the

needle

dog

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

guard

.............. ~ .......................... 22

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

ratio

........................................................................... 26

dog

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

shaft

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

knives,

and

only

available

to

MO-6~16~

overedge

series)

widths

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

.............. 30

3

10 10

12

14

16

18

20

22

24 24

26

28

30

32

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(20)

(21)

(22)

(23)

(24)

(25}

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Adjusting Adjusting Adjusting

Adjusting Adjusting Position

1)

Orientation

2)

Setting the lubricating pin ....................................................................................................................... 40

(26)

Longitudinal (27) Vertical (28)

Adjusting

(29)

Locus Adjusting

(30)

(31)

Adjusting

(32)

Position

(33)

Adjusting Adjusting

(34)

(35)

Lifting

(36)

Height Lifting

(37} (38) Position

Adjusting

(39)

1)

Replacing· the parts with those exclusively designed

2)

Adjustment value .................................................................................................................................... 64 -

3} Important points

(40) Position

the throat plate support .............................................................................

the

feed mechanism

the

looper

the

cloth

the needle mechanism ............................................................................... 38

of

the

upper

of

the lubricating pin ............................................................................................................. 40

momentum

the

height

cut

of

the

longitudinal

the lateral

of

the

motion the feed the

top

amount

of

the presser (pedal operation) ..................................................................... 58

amount

of

the

soft

chain making mechanism .................................................................. 64

in

of

the

cover

chip

cover

looper

of

the

of

the

top

feed

position

of

bar

guides

feed

dog

of

the

top

of

the

top

thread

adjustment ............................................................................................................... 65

thread

guides

cover

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

................................................................................... 36

lubrication

of

the

top

feed

top

feed

dog

.................................................................................... 48

position

of

the

top

A and B ................................................................. ~ .•..

pressure .........................................................................

feed

dog

feed dog (when

and

presser .......................................................... 34

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

top

feed

dog

(Top feed amount) ...........................

dog

.................................................................... 44

dog

................................................................... 46

of

the

top

feed

dog

.......................................... 48

the

top

feed

dog

.................................................... 50

feed

dog

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

(when operating

the

presser

the

looper

thread

for

making soft chains ......................................... 64

thread take-ups

the

pedal) ••....••..••..••.......•..••.•

lifting

take-ups ................................ 62

lever

is

operated)

of

MO-6900G (J) ... 66

.••

34

36

40

42

52 54

56 56

60

4. ADDITIONAL INFORMATION AND PRECAUTIONS ..................................... 68

(1) Thread

1)

2)

(2) Upper looper· .................................................................................................................. 69

(3) Center-to-center distance

(4) Caution

1) Application

2) Precautions to

(5) Kinds

1)

2)

(6)

Inspection

5. ADJUSTMENT

(1) MO-60006. SERIES ........................................................................................................

tension

Strength of tension spring ....................................................................................................................... 68

Springs used

in

of

motor

Motor pulleys

Pat

No.

of

............................................................................................................... 68

for

each model. ................................................................................................................. 68

of

the

upper

assembly

of

sealant .............................................................................................................................

be

and

frame support plate bolt ......................................................................................................... 73

and replacement

OF

...................................................................................................... 69

taken with respect to the lubricating components ............................................... ~ ......

pulleys,

belts ........................................................................................................................... 72

belts

and frame

of

the

THE NEEDLE HEIGHT AND LOOPER TIMMI NG ........... 7 4

looper

support

cartridge

holder

filter

............................................... 69

plate

bolts

.................................... 72

..................................................... 73

69

71

74

6. TROUBLES AND CORRECTIVE MEASURES ............................................... 75

7. DIMENSIONS

(1) Semi-sunken

(2) Fully-suken

OF

TABLE

type

.................. u

••...••.••..••••....•.•..•.•.••••.•..•••.•..••••..••.••••••..•••.•••.••..••.•..

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

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

87

87 88

1

..

SPECIFICATIONS

(1) MO-6700S SERIES

No.

1

2

3

4

5 6

7

8

9

10

11

12

13

14

15

16

17

18

19 20

21

22

23

Model

Description

Stitch

Sewing Stitch Needle Overedging Differential Needle Needle Needle Presser Presser Stitch Upper Differential Weight

Lubrication

Lubricating

Needle Needle

Micro Motor

Item

type

F.

S.

speed

length

gauge

width

feed

bar

stroke

tilt

angfe

lifting

amount

foot

pressure

acfJUstlng

knife

feed

oil

cooler thread

presser

lifting

T.

ratio

method

adjustment

heat

remover

device

M0-67048 M0-67148

1-neecile

JISE13 (USA

Overlock

machine

standard : 504)

JISE24 (USA

. 0.8to4mm

-

1.6,

3.2,

4,

4.8

mm

Gathering

ORGAN

7.0mm

•

JUKI

1 = 2

DC X 27

By

lever

Gear-type

MACHINE

2P

400W

(Max.1 : 4),

(Standard)

with

550W

Specifications

2-needle

machine

standard:

7,000,pm

2,

2.4,

32,4,4.Bmm

Stretching

24.5mm

20·

6.5nm

49N

By

pushbutton

FlatknHe

micro

adjustment

28kg

automatic

OIL

18

Optional

Provided

(In

case

(in

case

of

Overlock

514)

3.2

mm

(DC

X 1

(5Kg)

lubrication

(Equivalent

as

standard

of

7,000

less

than

JISE13+D12 (USA

1 :

0.7

(Max.1 : 0.6)

can

be

used

medlanism

to

ISO

rpm)

7,000

rpm)

. M0-6716$

2-needle

machine

standard = 516)

1.5to4mm

2.

3.2,

4,

4.8,

as

well.)

7.0mm

VG

18)

Safety

4,

4.8

6.4

stitch

mm

111

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* JUKI MACHINE

No. : MML018900CA (900 m g )

Part

OIL

18 (Equivalent to ISO

VG

18)

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-

(2)

MO-6900S

SERIES

No.

10

..

1

2

3

4

5

6

7

8

9

11

12

13 14 15

16

17

18

19

20 21

22

23

Model Description

Stitch

type

Sewing

speed

Stitch

length

Needle

gauge Overedging Differential Needle

bar Needle

tilt Needle Presser

lifting

Presser

foot

Stitch

adjusting

Upper

knife

Differential

Weight

Lubrication Lubricatina Needle

cooler

Needle

thread

Micro

presser

Motor

Item

F.

S.

width

feed

stroke

angle

amount

pressure

feed

oil

lifting

T.

ratio

method

adjustment

heat

remover device

1-needle

JIS

E13

(USA

standard : 504)

1.6,

MD-69045

Over1ock

machine

8,500rpm

-

3.2,

4,

4.8

Gathering

ORGAN

7.0mm

" Provided Provided

0.8to4mm

mm

DC

By

JUKI

as as

2P

JIS

(USA

1 : 2

(Max.1 : 4),

X 27

(Standard)

lever

with

Gear-type

MACHINE

standard

Provided

550W

(In

400W

(In

Specifications

M0-6914$

2-neeclle

E24

(Exduding {Excluding

case

machine

standard:

2,

2.4,

3.2,

4, 4.8

Stretching

24.5mm 20·

6.5mm

49N

By

pushbutton

Flat

micro

adjustment

28kg

automatic

OIL

18

of

case

of

Over1ock

3.2

(DC

(5Kg)

knife

(Equivalent

as

not

less

514)

mm

X 1

can

lubrication

some

of

some

of

standard

less

than

2-needfe

JISE13+ (USA

8,000rpm

1 : 0.7

{Max.1 : 0.6)

be

used

mechanism

to

ISO

VG

subclass

subdass

7,000

rpm)

7,000

rpm)

MQ-69168

Safety

machine

D12

standard : 516)

1.5to4mm

2,

3.2.

4,

4.8

3.2,

4,

4.8,

as

weil.)

7.0mm

18) machines) machines)

6.4

stitch

mm

* JUKI MACHINE OIL

18

(Equivalent to ISO VG 18)

Part No. : MML018900CA (900 m

! )

-2-

(3) MO-6900G SERIES

·

No.

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16

17

18

19

20

21 22 23

Model

Description

Stitch

Sewing Stitch

Needle

Overeclging Differential

Needle

Needle Presser

Presser

Stitch

Upperknife Differential Weight

Lubrication

Llbricating Needle Needle Micro

Motor

Item

type

F.

S.

speed

length

gauge

width

feed

bar

stroke

tilt

angle

frfting

amount

foot

pressure

acfjUSting

feed

oil cooler thread

presser

T.

ratio

methcxJ

adjustment

heal

remover

lifting

device

M0-6904G

1-needle

JIS

E13

(USA

standard : 504)

2.5to5mm

4.8,

Gathering

Stretchirg

Specif

cations

M0-6914G

Overlock

machine

-

10mm 6.4mm 4.8,6.4mm

1:

1.75

(Max.1

:

3.8)

1 :

0.6

By

lever

*

JUKI

MACHINE Provided Provided

as

standard

as

standard

2-needle

JISE24

(USA

Gathering

Stretching

ORGAN

By

with

micro

Gear-type

OIL (Excluding (Excluding

Provided

Overlock

machine

standard : 514)

6,000rpm

2.5to4mm

2.6mm

1 : 2

(Max.1

:

1 :

0.7

(Max.1

28.8mm

20·

DO

XS

Max.Bmm

49N(5Kg)

pushbutton

Flat

knife

adjustment

28kg

automatic

2P400W

18

(Equivalent

some some

as

standard

lubrication

3.8)

:

0.6)

mechanism

to

ISO

of

subclass

of

subclass

M0-6916G

2-needle

machine JIS E13+ 012 (USA

standard:

2.5to5mm

4.8mm

Gathering

1 :

Stretching

1 :

VG

18) machines) machines}

Safety

1.75

{Max.1 : 3.8)

0.6

stitch

516)

·-

• JUKI MACHINE OIL 18 (Equivalent to ISO VG 18)

Part No. : MML018900CA (900 m 2 )

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(4)

MO-6900R

No.

Model

1

2

Feed Description

3

Stitch

4

Sewing

5

Stitch

6

Needle

7

Overedaina

8

Differential

9

Needle

10

Needle

11

Needle

12

Presser

13

Presser

14

Stitch

15

Upper

16

Vertica!

17

Lonaitudnal

18

Top

19

Differential

20

Weight

21

Lubrication

22

Lubricating

23

Needle

24

Needle

25

Micro

26

Motor

27

type

F.

speed

length

gauge

bar

tilt

angle

lifting foot

adjusting

knife

amount

feed

adjusting

cooler thread

presser

SERIES

Item

S.

T.

width

feed

ratio

stroke

amount

pressure

method

of

top

amount

of

type

feed

adjustment

oil

heat

remover

lifting

device

feed

top

feed

JIS (USA

dog

dog 1

Specifications

M0-6904R M0-6914R

Vertical

amount

1-needle

E13

Overlock

r:nachine

standard :

7,000

6,000

504) rpm

rpm

JIS

(USA

(longitudinal

0.8to4mm

2-needle

machine

E24

standard : 514)

amount

-

3.21 4,

4.8,

5.6

mm

Gathering

ORGAN

7.0mm 6.5mm

to

7.5

mm

Provided Provided

1 : 2

DC X 27

(deoending

By

lever

*

JUKJ

MACHINE

as

standard

as

standard

2P

55DW

2P

(Max.

Gear-~,pe

400W

1 :

(Standard)

49N

By

3.5to8.5mm

on

the

~ifications

with

micro

OIL

(Exduding

(Excluding

Provided

(In

case

(In

case

3.2.4nm

4),

24.5mm

pushbutton

Rat

By

automatic

18

of

top

feed

Over1ock

of

top

of

top

2mm

Stretching

20·

(DC

X 1

(5Kg)

knife

lever

adjustment

29kg

lubrication

(Equivalent

some

as

standard

not

less

of

less than

dog

feed

less

feed

6

1 :

0.7

can

be

of

the

mechanism

to

ISO

of

subclass

of

subclass

than

7,0CYJ

7,000

M0-6916R

2-needle

machine

JISE13+D12

{USA

standard : 516)

than

6 rrm)

to

8.5

mm)

1.5to4mm 32,4.Bmm

3.2,

4,

4.8,

(Max.1 : 0.6)

used

as

well.)

5.5mm

respective

VG

18) machines) machines)

machines)

rpm)

Safety

6.4

stitch

mm

• JUKI MACHINE OIL

18

(Equivalent to ISO

Part No. : MML018900CA (900 m

f )

VG

18)

-4-

(5) MO-6900J SERIES

No.

Model

1

Feed type

2

Description

3

Stitch

4

Sewing

5

Stitch

6

Needle

7

Overedging

8

Differential

9

Needle

10

Needle

11

Needle

12

Presser

13

Presser

14

Stitch

15

Upper

16

Vertical

17

Longitudinal

18

Top

19

20

21

22

23

24

25

26

27

feed Differential Weight Lubrication Lubricating

Needle Needle Micro Motor

* JUKI MACHINE OIL

Part No. : MML018900CA (900 m £ )

Item

type

F.

S.

speed

length

gauge

width

feed

bar

stroke

tilt

angle

lifting

amount

foot

pressure

acfJUsting

knife

amount

adjusting

feed

oil cooler thread

presser

lifting

T.

ratio

method

of

top

feed

of

top

type

adjustment

heat

remover

device

18

doa

feed

dog

(Equivalent

1-needle

JIS

E13

(USA

standard:

2.5to5mm

Gathering

Stretching

2.7

to

ISO

.

Specifications

M0-6904J

Vertical

Orerlock

machine

504)

-

4.8mm 6.4mm

1 :

1.75

(Max.1 : 3.8)

1 :

0.6

to

7.0

mm

(depending

By

lever

Gear-type

*

JUKI

MACHINE

Provided

VG

18)

as

standard

as

standard

M0-6914J

amount

2-needle

machine

JISE24

(USA

standard:

6,000rpm

2.5to4mm 2.5to5mm

2.6mm

Gathering

Stretching

with

1 : 2

1:

28.8mm

ORGAN

Max.8mm

49N

By

pushbutton

Square

3.5to8.5mm

on

the

specifications

By

micro

29kg

automatic

OIL

18 (Exduding (Excluding

Provided

2P400W

0.7

20·

lever

adjustment

as

of

top

feed

Overlock

514)

(Max.1 : 3.8)

(Max.1 : 0.6)

DOX5

(5Kg)

knife

lubrication

(Equivalent

some

of

some

of

standard

dog

2-needle

JIS (USA

Gathering

Stretching

of

the

respective

mechanism

to

ISO

VG subclass subclass

M0-6916J

Safety

machine

E13+ 012

standard : 516}

4.8mm

4.8,6.4mm 1:

1.75

1 :

0.6

machines)

18} machines) machines)

stitch

(Max.1:

3.8)

I

-5-

I!

l,

I,

11

I

i

ii

11

.I

l

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!j

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2.

MO-6000 SERIES MODEL NUMBERING SYSTEM

1 2 3 4 5 6 7 8 9 10

~I

1

11

II

I

ll

I

~

I

11

·I

11

ri!

i

I

11:

M06666DDD6666/D666-DO6

4

7 · 6700 series

9 6900 series

7

s

G

*

A

*

,I

* 6900only

MODEL

Machine

J

Basic

Standard

Extra

Variable

Variable extra

code

specification

heavy-weight

NUMBERING

code

materials

top

feed

type

top

feed

type

for

materials

SYSTEM

11

12 13 14 15 16 17 18 19 20

5. 6 Seam

03

04

05

12 14

16

43

45

code

Splicing

1-needle

For

blind 2-neeclle 2-needle

2-needle

3-needle 2-needle

3-threa~ hemmong 4-thread

4-thread

S.thread

6-thread double

chainstitch

overtock

(505)

mock

safety overtock safety

stitch

safety

stitch

(504)

(514)

(516)

stitch

(512)

21

22

8

0

B C 2.4mm,

D

E

F

1 4.8 mm+ 2.0

Needle

gauge

1-needle

2.0mm

26

mm

heavy-weight

materials)

32mm

4.0mm

4.8mm

(for

code

extra-

mm

11

I

9

Overedging

1.6mm

A

D

3.2mm

4.0mm

E

4.8mm

F

6.4mm

H

10.0mm

M

18.0mm

N

12

Application

Classification

and

process

0

Standard

1

For

blind

2

Forgathering

4

For attaching

5

For

binding

6

For

binding

Splicing•

D

E Car mattress

F

Soft

chain

width

code

based

stitching

tape

code

on

tape

type

1 O

4

5

6

7

of

operation

Feed

2-row

1-row 3-row 4-row

dog code

11

Material

code

Classification

1

2 Light-weight

-----

3

4

-

5

------

6

7

based

Extra

light-weight

weight

materials

weight

materials Medium-weight weight

materials

Heavy-weight to extra heavy-weight

on

materials

to

medium-

to

to be used

light- For light-weight materials

shirts

or

the

Knit

wear

only

General

fabrics

heavy-

Knit wear the

fike Medium·weight to heavy-weight materials

For

such

heavy-weight

Heavy-weight

materials

mattress,

etc.

Uke

only

materials

such

as

denim materials

such

as

sweater or

or

for

jeans,

the

as

like

car

•

In

case

of

the

splicing,

13th

figure

is

(1).

-6-

13

Special

classification

specification

0

Standard

6

Feed

7

Upper

F

For

swim

H

Upper

M

For

zipper

1

For

splicing

15

to

18

Device

G0'2/O141 G39/Q141

L121

S159

S161

S162 N077

machine

dog

code of

machine,

other

than

gauge

provided

looper

high

suits

looper

extra

and

attachment

Presser

fo(?Vtape Presser foot (for sharp curve)/tape guide for attaching Blind

hemming

Swing

type stitch} Swing

type ruffler stitch) Swing

type

Four-fold

structure

set

w~h a lip

throw

type

high

throw

code

guide

tape

ruler

ruffler

(pedal-intertocking

ruffler

(Manual

binder

type

for

(Manual

and

attaching

lever

tape

type

lever type for safety

type

for

safety

over1ock)

I

J

l

j

I

11

lj

I,

\

I

i

I

II

·1

20

A

21

22

•

The

Machine

Standard (Common

Accessory

A

Fa

B

ForJE

G

For

Machine

0

Fully-sunken

Semi-sunken

general

head code

machine

code

general

China

head

export

head

to

all

specifications)

export

*

code

type

s~ification is for

Hong

The

numberings

and

after

Kong,

Apnl

U.SA,

after-..!'

1,

2002.

Japan and

(hyphen)

They

are

Singapore.

of

19th

not

described

figure

on

will

the

be

used

catalogue

on

or

the

fike.

~

j:

11

I

11

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ij

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.. 7 -

I

3.

STANDARD

ADJUSTMENT

Standard Adjustment

i'

!

1·

I

(1) Adjusting

When the needle(s) is in the highest position, the needle height from the throat plate surface should be as shown below.

11

z,z

.,[!~zzma

C2'Z2222Z]n

I

j

I:

I'

I

the

6~046

··-

~

1

,inJ,a

66146

66166

n

needle height

1-needle/

2-needle

: left

10.5

11.3

11

:0

11.3

10.5 9.1

11.3

10.5

11.3 13

10.5

11.3

9.8

14.4

15.4

14.1

for

MO-

30-

SD

~

:I

n ::i.,

CD

g:

R

~

Cl)

:II,"

Cl)

MO-

fl)

::,

MO-

Cl)

3 Cl)

I»

e:

MO-

n

a,

2:o

MO-

:,

<

CD

Cl>

::i.

0

MO· 6614S (R)

0

':,t:

MO-

en

MO-

3

e.

II>

a,

MO- 6Li 16S(R)-A.6.L'l

g.~

-·

en

MO- 6943R -6.D.6

i~

MO- 66.43S

::r

MO-

MO· 6903G

:i5:

0

MO· 6904GCJl-OF6

0,

CD

MO-

0

p

MO-

<-

MO-

The adjustment

Model

6l!.04S(R)

6604S

6/\05S

6.6.125 SD.12S

Sb

6b

Sil

6/\45S

6905G 6914G(Jl-CH6 6916G(J)-F

-l!.66

-D.D.D.

-606

-D.D.D.

-CE4

14S (R)

-8~6

-B66

16S(R)-D.D.b

16S(R)-b.66

-61::J.{:j,

-D.b.l:l

-ON6

·OM6

.0.6

·l!..60

-Lib.6

SOM

·66H

-66.H 11.3 507

SOF

-40H

-3c7

-20H

40H

-.t.60

-l!..6H

-60H

-b.l::,7

·6.D.H

-360

-3D1 15.4

-700

-760

-700

of

needle height overlock machine should be made in reference to the left needle.

(Unit: mm)

2-needle : right

-

9.4

9.9

-

9.9

-

12.6

-

the

2-needle

. -

I

I·

1;

ii

I

.I

I!

i

I

(2) Positioning the throat plate

The

needle entry point should be such that the distances listed below are provided between the

needle slot edge of

Over1ock

Double·chainstitch side B

Note that

for

M0-6~

side

A

"A:=1.8"

16S (R)

"A=1.6" and "8=1.3" for

the

throat plate and the center of needle.

1.3

1.0

and

"8=1.5"'

-n6.6-60H,

M0-69~6G,

(Unit:

J

mm)

I

-8-

A

Adjustment Procedures

Results of Improper Adiustment

1) Take off the upper cover, loosen setscrew 8. of needle driving

forked crank

down to adjust the needle height.

O and move needle driving forked crank O up

or

o Any other needle height than

specified here the action of the lower looper. the timing for.catching the upper looper thread, etc.

will badly affect

(Caution) Do not fully loosen the setscrew 8 of the needle

driving forked crank If the needle driving forked

laterally when setscrew and

until

it

settles

forked crank

1} Loosen setscrews 8 of throat plate base O and move throat

plate base

at

8 back and forth to adjust dimension A or

0.

crank

has

got

out

of

its

setscrew was loosened, fully loosen the

turn

pulley

to

allow the forked crank

by

itself. Then tighten the setscrew

that

position.

position

to

tum

to

fix

the

B.

of

o Improper lateral position

needle driving forked crank cause seizure, play, troubles.

o Improperly positioned throat

plate breakage, needles will the throat plate,

will

cause contact

the

will

or

other

needle

of

the

or

other troubles.

-9-

,11

!I

:-1

;ii

Standard Adjustment

II

I

1l

Ii

I

'I

!1

'I

11

~

'!i

I

(3) Installing position of the needle clamp

Needle clamp connecting stud O should fit with the bottom end of needle bar 8

0.5mm.

Oto 0.5 mm

Butt the needle clamp with the

end

of

the

bottom

needle bar.

0

or

spaced within o to

( 4)

Adjusting (Applicable

The center-to-center distance should be 26 mm. At this time, the clearance between the end surface of the arm and the neck of the ball should be

3.5mm.

the

only

length

to

M0-6~

26mm

of

the

lower

looper

16S

/ M0-6916R,

holder

G, J series)

-10

-

Adjustment Procedures

Results of Improper Adjustment

1) Loosen setscrew O and adjust, by slightly turning needle clamp

8.

the clearance provided between the right-hand side needle

and the lower looper (for 2-needle overlock machine) and the

clearance provided between the needle hole

and the needle (for safety stitch machine).

in

the throat plate

o

If

the

clearance betw~en the needle and looper is excessive, the needle thread will time of tucking.

o

If

the

between

looper is insufficient, the needle

will break or the looper blade

point will be damaged causing thread breakage.

be

clearance

the needle and

provided

likely to skip at the

provided

the

1) Loosen setscrew O of the lower looper holder from the rear of

the frame. Since it is difficult to accurately measure the center-to-center distance. perform adjustment to provide a 3.5 mm distance between the end surface of the arm and the neck of the ball as illustrated.

o Increasing the center-to-center

distance stroke of the duble chain looper or

lower looper, and decreasing the stroke.

will

distance

give a smaller

will give

larger

II

ll

·I'

I

-11

-

·1

I

Standard Adjustment

(5) Adjusting the

1) Returning amount

lower

looper

of

the lower looper

The distance between the blade point

looper

lower

and the

center

of the needle

should be as follows when the lower looper is at the extreme left of its stroke.

of

the

.:.::

8

~

(D

>

C:

o:c

Cl>

u

-

"'

ie

Cl>

c;=

.:.::

8

ii

(D

> C

o·-

..92

'g

je

C

(\I

~

<D

.:

C

~~

QI

"'

-e

t8

,.

•

C,

Og

:E

a,

U)

6604S{R)

MO-

SD.OSS

MO·

6604S{R)-

MO-

6604S

6

MO-

'°'

14S(R) •

MO-

6614S(R) -806

MO-

66125

MO-

6612S

6616S(A)

MO·

MO- 6.t).16S(R)

MO·

6616S(R) MO- 6943R MO-

6643S

MO-

6903G

MO-

6904G(J)

MO-

6905G

MO- 6914G(J)

MO-

6916G(J)

Model

OAS

·OA4

006

OF4

OF6

OH4 0D4

•

OF6

B04 to BE4

B06

BE7

-CE4

·DF6

-66.0.

BE4

-00/.\ F66

·F66

-666

-6.6.6

-ON6

·OF6

-OM6

-CHS

-F66

156

·210

to

OE4

3t).~ 3t).O

500

SOM

toOE4

46H

.

50H

-3lH

to

BES

20H

to

BFS

4uH

·40H

50F

507 2.2

360

500

46.H

.

56H

-60H

-6.67

-.ti.6.H

-301 1.4

-700

-760

-700

(Unit: mm)

Dimension8

4.0

3.7

3.8

4.0

3.7

3.8

2.8

3.8

3.5

1.3

..

3.3

3.5

-

2) Clearance between the lower looper and the needle

The clearance should be O to 0. 1 mm.

0to0.1

mm

J

- 12 -

Adjustment Procedures

Results of Improper Adjustment

1) Returning amount

CD

Loosen setscrew • of lower looper support arm 8 lower looper 8 to make adjustment of the returning amount.

(Referential information)

1. Radius 8 of lower looper 8 will

looper is inserted into lower looper support arm O until it contacts with stopper pin O and then is fixed.

2. The rocking angle

(M0-66665,

The rocking angle of the lower looper will

(M0-6966G,

R)

J)

of

the lower looper

be

66.9

of

the lower looper will

and

mm

when the lower

be

2s·.

be

32·.

adjust

o Excessive return of the lower

looper skipping when filament thread is used.

o Insufficient return of the lower

looper tends to cause needle

thread

spun thread is used.

tends

stitch

to

cause· stitch

skipping

when

2) Clearance between the lower looper and

MO-6700S Series

CD

Loosen setscrew 8 of lower looper support arm O to the extent that it is temporarily tightened. Now, make the adjustment by

moving lower looper support arm 8 back and forth.

MO-6900S,

CD

Loosen setscrew 8 of lower looper support arm 8 to the extent

that it position of the looper using fine adjustment screw O.

R,

G,

J Series.

is

temporarily tightened. Then finely adjust the longitudinal

the

needle

® Turn fine adjustment screw 8 clockwise to move lower looper

G away from the needle.

Tum the screw counterclockwise to move lower looper 8 closer to

it.

-13-

o Excessive clearance will often

cause skipping.

o Insufficient clearance will cause

needle contact of the looper with needle, the blade point of the looper.

leading

breakage

needle

breakage

or

thread

due

produce scratches on

to

needle

or

other troubles.

thread

stitch

to

the the

Standard Adjustment

(6) Position

Vertical position : To

be

in

close contact with

Laternal position

To

be

pressed

gauge

8.

Q)

c::

MO·

S.604S(R)

£

co

6.605S

E

~

8

'C

MO-

66.04S(A)-OF6

~

a,

'g

a,

M0-6.l!:.045

~

6614

a,

MO·

C

:c

0

t'G

MQ.

E

6614

~

8

'C

a,

MO-

MO·

6612S

6.6.12S

>

0

Q)

=o

a,

Q)

C

"'

of

the upper looper g~ide

the

frame

:

against

the

upper

looper

0

Frame

(Unit: mm)

Model

OAS

-OA4 006

OF4

OH4

004

·OF6

BD4toBE4

S(R)·sos

S(R}-806

BE7

-CE4

·DF6

lo

OE4

to0E4

to

BEG

to BF6

15A

-210

3.6A 360

-500

SOM

4AH

50H

-3.6.7

20H

0

4.llH

-40H

507

0

SOF

Dimension

a-i

~-3

@~

[f]

!...;6

,~

~7

ffil

guide

Ci)

surface.

support

surface

Upper

looper

guide support gauge

MO-

a,

C

:E

0

co

MO·

E

..c:;

g

MO·

~

?:-

.S!

co

Cl)

MO.

MO·

MO.

MO-

""')

cj

MO• 6905G

0

CJ)

CD

6

MO· 6914G(J)

::E

MO- 6916G(J)

&St

13131909

11

11545100

Modef

6.6.16S{R)

6/\16S(R)

6A16S{R)

6943R

6.6.43S

6903G

6904G(J) -OF6

-6.Ab.

BE4

-00.6.

F.6..6.

-F.6.6

-61.).A

.,6_1.),,6,

-ON6

-OM6

-CHS

-f66

(Unit: mm)

~7

5.8

13132006

~

12375606

(Unit:

Dimension(B

360

500

46H

-

SOH

-60H

-D.D.7

-6D.H

-301

-700

-1.6.0

-700

E@

~y

r,s.s

[iliJ

~

i

[iJ

~~~

ff:

u~

mm)

3

-14-

Adjustment Procedures

1)

Fit

upper looper guide support gauge 8 over gauge fixing pin

0 which has been driven in frame 8 and secure the gauge

with

an

O ring.

Then position the gauge taking the marker dot engraved on

or the chamfering direction as reference.

2)

When installin upper looper guide support 81 press the gauge close contact with the frame guide surface, then tighten the

screws.

(Caution) Refer to "4- (4) -1) -

various sealants.

while keeping the upper looper guide support into

(J)

Various sealants" for the

it

against

Results of Improper Adjustment

o If the upper looper guide has

improperly positioned it

will

cause

it

disturbed path

looper

skipping.

o If the upper looper guide has

been inaccurately positioned

laterally. skipping, looper.

oil

with

resultant

it

will

or

contact with the

vertically,

leakage

of

the

cause stitch

or upper stitch

-15-

Standard Adjustment

(7) Positioning the upper looper holder

The distance between the bottom surf ace of the frame and the upper end of the upper looper holder

8 should be as shown below when the upper looper holder O is at the highest point of its stroke.

(Unit:

53mm

t

0

l

Bottom surface

llt(tllfl(llltltl((l/1

of

frame

•

-~

1

8

'C

CS)

{:;

~

m

J

CS)

~

u

~

.g

a,

>

0

Cl>

=a

G)

Cl>

~

(\I

GI

C

:c

u

as

E

.c

.B

",ID

en

2:-

.S!

a,

(/)

Cl>

-~

GI

Ill

-,_

(!J

0 0

en

C0

6

:E

MO-

MO·

MO-

,-.

MO-

Model

OAS

SLl.04S(R) 6Ll.05S

M04S(A)·

6.!i.04S

6614S(R)·

6.ll.125

6ll.12S

66.16S(R)-6/\l\

6Ll.16S(R)-

6616S{R)

6943R

6643S

6903G

6904G(J)-OF6

6905G

6914G(J)-CH6

6916G(J)·FD.6

-OA4 006

OF4 OF6

OH4 004

•

OF6

B04 B06toBE6 BO~ BE7 4.ll.H

-CE4

-DFG

·F

-D.bD.

-D.66

-ON6

-OM6

BE4

006 Fll.D.

D.6

to

OE4

toOE4

loBE4

to

BF

. -

Li.

156

·210 3All. 3ll.O

-500

SOM

46H

50H

·3ll.7

20H

•

·40H

507

-

SOF

3l:.O 500

4.ll.H

5Ll.H

-60H

·6.D.7

-6.ti.H

-301

-700

·1/:J.O

-700

Dimension&

45.0

462

482

47.3

48.4

46.8

46.9

46.2

48.2

4B.4

47.3

48.4

512

50.7

51.7

49.3

48.B

mm)

--

-

-16-

Adjustment Procedures

1) Loosen the setscrew of upper looper ball arm O and setscrew

0 of the upper looper holder.

2)

Adjust the clearances between upper looper bracket 8 and

Oto

upper looper holder and tighten setscrew (Make sure that the upper looper holder smoothly moves together with upper looper shaft

3)

Then determine dimension O from the bottom surface of the frame to the top surface of upper looper holder pin tightening the setscrew of upper looper ball arm

(Caution) Replace upper looper holder 8 according to the

needle gauge size.

approximately 0.2

O of the upper looper holder.

O.)

mm

respectively,

8.

8 before

Results of Improper Adjustment

o Inaccurately positioned upper

looper

excessive

upper looper, resulting in stitch

skipping,

(Caution) To adiust the upper

looper

dimension Remember that the projecting

amount and the

upper

eventually

adjusted.

dimensions upper looper.

holder

or

ball

looper

will

projection

other troubles.

arm,

O

as

height of the

be

So,

confirm

related to

cause

of

the

take

standard.

should

properly

the

l'I

:1

!I

II

I

l'

11

I

-17-

I

II;.

'

~

F

Standard Adjustment

II

I

I!

ii

I

i

j

I

j

II

'1·

ii

!

t

l

(8) Positioning

the

upper looper

1) Height of the upper looper

The

distance between

when

the

upper looper

2) Longitudinal position

G)

The clearance between the upper

and lower loopers

when

they cross with

® The clearance

and

the needle should

the

is

of

the upper looper

should

between

throat

plate

surface

at

the

each

extreme

be

0.1

other.

left

to 0.2

the upper looper 8

be

o to

0.2

mm.

of

mm

and

its

the

travel.

"g

"im

is

a>

ti

'g~

Q)

:r

~

u

0

"C

Q)

l>

~

Q)

-

alE

Q)

C

"'

--

Cl>

C

:E

u

t'O

E

.c

j:1

--=

C/l

~

tU

Cl)

0

c:J

·c:

CD

VJ

~

0

O>

co

6

~

blade

11)

u

co

point

of

the

Model

MO-

6804S(R)-L\L\L\

MO-

6604S

-L\l::.l::.

MO-

6/\05S

-!:l.66

MO-

Bli

MO- 6614S(R)-8E

MO-

~

MO· 6616S(R)

MO-

6943R

MO-

6643S

MO-

6903G

MO-

6904G{J)

6905G

MO·

MO· 6914G(J) -CHS

MO-

6916G(J} -FL\6

B04

145

lR)·sos

BO6

6612S

6L\12S -DF6

6616S(R)

16S(A) -

-CE4

-666

BE4

D06

F6A

-F

b.6

-/\~6

·L\L\6

-ON6

-OF6

-OM6

looper

to8E4

to

BES

to

BF.6.

7

should

660

-6.66

SOM

-l::.l::.H

-6illi

·307 20H

4!::.H

-40H

507

50F

-L\60

4/\H

5~H

-60H

·L\L\7

·L\L\H

-3D1

•700

·760

-700

be

as

{Unit:

Dimension

11.0

11.3

10.3

11.0

11.B

11.0

11.3

12.8

10.3

11.0

13.6

13.7

12.0

12.9

13.7

follows

mm)

Ci)

0.1

to 0.2mm

7

Lower looper

•

-18-

~

__

---

:s:

l

Adjustment

1)

Height of the upper looper

CD

Set a hexagon screwdriver onto setscrew 8

looper bracket

O to adjust height

Procedures

f).

at

the

end

of

upper

@ When adjusting the height, pay attention also to the clearance

produced between the upper looper and the lower looper at the time of their crossing.

Results

o

o On the contrary, if the upper

of

Improper Adjustment

If

the upper looper has been positioned excessive clearance will produced between the upper looper and the needle. result, the upper looper thread

will

fail to catch the

thread,

occurs.

looper has been positioned too low, the needle point

looper, breakage. Also the looper will touch other component when the presser foot goes up .

too

and

stitch

causing

high,

As

needle

skipping

will

hit the

needle

an

be

the

......

··

2)

Longitudinal position of the upper looper

CD

Loosen setscrew 8 at the top end of upper looper bracket O to move upper looper O clearance of lower looper at the time to 0.2

0.1

to 0.2 mm between the upper looper and the

mm

between upper looper O and the needle.

back

or

forth for positioning the

of

their.

crossing or the clearance of O

-19-

o Excessive clearance

stitch skipping.

o Insufficient clearance will cause

. the upper looper to come in

contact with the lower looper.

will cause

Standard Adjustment

(9)

Adjusting

the

double

chain

looper

(Applicable only to M0-6.616S/6916R, G, J series)

1) Returning amount of the double chain looper

The

distance between the needle center

to 2 mm

when

the_

looper

is

at the extreme left of

and

the

blade point of

its

travel.

the

double

chain

looper should

be

1.5

M0-691

2) Longitudinal motion (Avoid motion)

The

3.0

mm

3.5

mm

Note : The avoid

SG,

J

series

standard minor

(M0-6~ (M0-691

16S, R).

BG,

motion

axis

of

the

elliptical motion

J).

should be adjusted in accordance

M0-661651 R

should

be

series

:

Marller

with

•

(63.4mm)

Needle No.

__

,.,---------\

(\.

I

l-~

3) Clearance between the double chain looper and the needle

The

clearance should be

0.05

to

0.1

o.os

mm.

to

o.

1 mm

-20-

~j

Marker Hole 8

Adjustment Procedures

Results

of

Improper Adjustment

1) Returning amount of the double

chain

looper

(D Loosen setscrew 8 of double chain lopper driving arm O to

make this adjustment.

@ Radius

63.4 mm when

(I

of the double chain looper driving arm 8 will be

it

is lowered until it comes

in

contact with stopper

pint,.

@ For M0-6916G,J type machines,

the tilt to

2)

Longitudinal motion (Avoid motion)

(i)

Open the cover of the adjusting hole

loosen setscrew the adjustment by turning the rod back and forth.

Marker:

Marker

1.6 mm.

0,

and put a

This

side

.....

Minimum (for standard

.

: Far

side

· . .

.....

Maxunum

(for

ttuck

radius®

02

rod

to

thin

needles)

will be 63.2 mm.

8.

Adjust

on

the rear of the frame.

in the hole. Now, make

needle)

e }

As

observed

from

C)

this side

o Excessive return

chain looper will cause frequent

stitch skipping when filament

is

thread

used.

of

the double

o Insufficient return of the double

chain

looper

will

cause frequent thread stitch skipping when spun thread is used.

o

If

the avoid motion is too large, triangle stitch skipping occur.

will often

Bad needle

-----~entry

Good needle

entry

a

3)

Clearance

(i) Temporarily tighten setscrew

and finely adjust the longitudinal position of the double chain looper. Adjust the clearance to

M0-6916S,R series only

between

the double

chain

looper

fJ

in the double chain looper,

0.05 to

0.1

mm.

and

the needle

® Turn fine adjustment screw O clockwise to move the double

chain looper away from the needle. Turn

it counterclockwise to move the double chain looper closer

to

it.

o Insufficient avoid

cause the needle point to hit the looper, producing scratches on the needle point or looper.

motion

will

o Excessive clearance will cause

frequent needle thread stitch

skipping.

'.:>

Insufficient clearance will cause

looper

to leading to needle breakage scratches point breakage.

to

hit the

on

the looper blade

with consequent thread

needle,

or

-21

-

Standard Adjustment

(1

O)

Adjusting the height and clearance of

1) For 1-needle or 2-needle overlock machine

Make

needle guard e lightly come

mm)

when the blade point of the lower looper reaches the needle center.

The clearance between needle guard

point of its stroke.

The

height of needle guard

CD

is 1

in

contact with the top end

Ci)

and the needle

mm

from the throat plate bottom surface.

the

needle guard

is

0.1

of

needle (bend needle

mm

when the needle is

by

o to 0.05

at

the lowest

Needle guard Q

(Traveling needle guard)

2) For safely stitch machine

The

safely stitch machine

positioned in the same manner

The needle guard

Cl

should be positioned 5

has

four needle guards,

as

those for the overlock machine.

Needle

Throat

plate

•

e,

CD,

(9

and

{i).

The

needle guards e

mm

below the throat plate bottom surface.

guard

@)

and

1

mm

6)

are

Throat

plate

==-~--===~_;r-~;=::_J_

-22

5mm

-

Adjustment Procedures

1)

For

1-needle

CD

Adjust needle guard e with setscrews O

so

that

by

Oto

reaches the needle center.

®

To

adjust needle setscrews 8 in to

adjust

@

Adjust

bottom

or

2-needle

it

lightly comes

0.05 mm) when the blade point of the lower looper the

clearance

when

the

needle

the

clearance

the

height

of

surface

w~h

overlock

in

contact

provided bar

is

at

needle

guard

to

0.1

mm.

needle

guard

setscrew 8 in

machine

with

between

the

IONest

support

CD

the

the needle

needle

point

and

to 1 mm

needle

in

the needle guard

(bend

needle

guard

CD

and

of

its

stroke,

loosen

tum

needle

guard

from

the

throat

guard.

the

CD

plate

Results

o

o A clearance left between the

o

of

Improper Adjustment

Excessively the needle guard

needles

or

stitch

needle

will

cause

come

leading breakage, If

the thread resultant stitch skipping. Also, double causing double chain stitch

dose

contact

will

lead

to

needle

skipping.

guard

6'

and

the

looper

blade

in

contact

with

to

needle or blade point

or

other

troubles.

needle

guard

CD

loops

will

be

damaged

chain

loops

will

between

e and the

bend

the

needles

point

to

the

needles,

is

too

high,

with

be

affected,

skipping.

o

If

the

needle

guard

t)

is

too

low,

the needle cooling felt will be lowered, effect guard.

o

Excessive needle cause shake. clearance guards to catch the needles between the on

resulting

of

the cooling

guard@)and

stitch

On

them,

needle

the

needles.

in

clearance

skipping

the

contrmy,

will

cause

leading

guards

and

deteriorated

and

needle

between

the needJe

due

to

needle-

insufficient

the

needle

to

wear

scratches

the will

on

2)

For

safety

stitch

machine

clearance provided between needle guard so

that it lightly comes

by

o to 0.05

®

Adjust

8

in

the

@

Adjust needle

(Caution) Check again the clearance

guard guard&.

the

needle

the

to

CD

0.1

and

installing

mm).

guard.

clearance

mm

the needle after

height

provided

with

in

contact

of

needle

setscrews

with guard

between

O.

adjusting

provided

Ci

and

the needle

the

needle (bend needle

(9

to 5 mm

needle

the

with

guard

(!)

between

height of needle

setscrew

and

the

needle

o

If

the

needle

guard

(tis

too

high,

the

needle thread loops will be damaged, occur. points

o If the clearance between the

needle is

too blade the

needles, of the needles, causing the breakage

blade

No

clearance cause close wear scratches

o

Excessive

the needle guard

needles due to insufficient needle

between

the

needle

on

the

and

stitch skipping

If

it

is

too

low,

will

be

crushed.

guard 8 and

large,

the

double

pcint

will

come

causing

of

the

needles

point.

left

between

them

tooome

contact

with

each

on

the needle guard on

the

needles

clearance

will

cause

needle

clearance

guards

to

catch

them,

leading

guards

needles.

the

needle

the

needles

chain

In

contact

the

breakage

or

them

in

excessively

other,

will

left

between

CD

and the

stitch

skipping

shake,

wiU

cause

the

needles

to wear

and

scratches

boper

with

looper

will

and

occur.

and

the

on

-23-

Standard Adjustment

(11) Adjusting the height

The height of main feed dog O from the top surface of the throat plate O should it is

at its highest posion.

Needle A

8

entry

I

'

of

the feed dog

Model

MO-6.600S Series

MO-6904G Series MO-6914G Series MO-6916G Series

•

Auxiliary feed dog 8 is 0.5 mm lower than main feed dog &.

-05mm

• •

be

as follows when

(Unit: mm)

Dimension A

-

1.0

1.3

1.2

1.1

(12) Adjusting the

Tilt

of

the

feed dogs when

have

come

up

most.

Model

MO-6.t!:.0OS

M0-6904G Series

MO-6914G Series MO-6916G Series

Series

tillt

of

the feed dog

the

•

Dimension

1.0

1.3 (1.5)

1.2

-

1.1

feed dogs

Front up

(Unit:

A

DimensionB

(1.2)

(1.4)

(1.3)

mm)

When

the

feed dog

the throat plate

Top surface

thethr\pla~

of

iuts

out

the

top

Feed dog

leveled.

N\MI\

surface

is

of

-24-

AdJustment Procedures

1)

Adjust the height of main feed dog 8 to dimension A with o setscrew

2)

Adjust the height of differential feed dog 8 with setscrew O so that there is no difference and differential feed dog

3) Adjust the height of auxiliary feed dog that it is 0.5

0.

8.

mm

lower than main feed dog

in

level between main feed dog 8

8 with setscrew O so

8.

Results of Improper Adjustment

If

the feed dogs are too high, the needles will be deflected and broken weight materials. The feed dogs will when materials. frequently occur.

o If the feed dogs are too low,

insufficient

result

o If the auxiliary feed dog is too

high, chain-off thread often jammed.

o

If differential feed dog are set at different differential feeding action will be hindered.

when sewing heavy-

tend

to

suffer

the

sewing

main

light-weight

Puckering

feed

heights,

scratches

will

power

will

dog

proper

will

and

be

1) Use the tilt of the feed dog when it

reference plate when

2) Feed setscrew

When the marker line is set at middle

..... The feed dog will be flat.

When the marker line is set at bottom

..... The feed dog will be tilted with its front

When the marker line is set

..... The feed dog will be tilted with its front down.

(Caution) The marker line should be used just as the reference

since it slightly differs with that of each machine the disparity of the components.

Confirm the accurate

and

adjust so that the feed dog is flush with the throat

the

feed dog juts out the throat plate.

bar

shaft O consists of an eccentric shaft. Loosen

t)

to

perform adjustment.

direction).

tilt

of

at

top

the

is

in its highest position as a

up

(in the arrowed

due

feed dog

by

observing the

feed dog itself.

c When tilted with the front

Good material catching will be obtained.

o When tilted with the front down

Uneven feed and puckering

be effectively prevented.

to

up

will

-25-