Seiko STH-8BL, STH-8BLD User Manual

PARTS BOOK

Superior

Sewing

48 WEST 25TH STREET
NEW

Machine & Supply

YORK, N.Y 10010

LLC

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INDEX

pages

THREAD TENSION, GUIDE, NEEDLE

*~f-

ARM

.

itt&

SHAFT, TAKE

UP

LEVER

J:.m.7CH

NEEDLE BAR, FEEDING MECHANISM

iHf.

PRESSER BAR ··························

J:i!

• J

~1~

·········

·······

··········

ifllx•

LOWER FEEDING MECHANISM .

"Fia•J

FEED

i!•J~in

!Ulil

REGULATOR ···············

·····

···········

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

··················

PLATE

····

···

·········

·······

······

...

........

······

····

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

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

··································

·························

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

········

...

........ :......

··················

···········

····························

........

·············

········

··············

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

······

········

········

···········

.......

·········

····

·······························

.....

·············

···

·····················

....

...

....

.......

.......

···················

...

..........

.....

1,

2

3,4

5,

6

···

7,

8

...

.....

9,

10

···

11,

12

ARM

SHAFT (UPRIGHT), LOWER SHAFT ·····················

.ll:*di."Fflll

LUBRICATION ·······

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BELT GUARD

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ACCESSORIES .......

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.....

..........

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

···

····

···

·······

····

······

··········

·········

····

············

······

·······

·······

··········

··············

······

·········

......

....

.......

...........

...

....

...

...........

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......

....

.......

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

··························

···

···

........

·······

······

··············

....

.......

························· 13, 14

········

···

············

.........

···················

··············

.....

.........

15,

17,

19,

16

18

20

THREAD

TENSION,

GUIDE, NEEDLE PLATE

*'~-=I-,

~tm:

.

33

19

~r,

13

11

I~

5 \ I \ 21 I

I

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20

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y

32

44

9

34

3

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18

28

41

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36

40

23

24

25

/G)~

42

I

~

I

43

39

1

THREAD TENSION, GUIDE, NEEDLE PLATE

*miJ-T-·ttti

Fi11:. No.

I
2

3

4

5
6
7

s

9

10

11

12
13
14

15
16

17
18
19

20
21

22

23
24

25
26

27

28

29

30

31

32
33

34
35
36
37
38
39

40

41
42

43

44

Parts

No.

10698 I

10699

•

8093

*

10700 I

10650

•

8100

*

10551
10682
10683

10759-A I

10760

10685

•

19510

*

10720

10679

•

19422

*

10678 1

10792

•

19512

*

10545

•

19518

*

10689 1
10690 1

10650

•

8100

*

10709 1
15062

10675

•

19421

*

10789

•

19511

*

15055

•

18085

*

10791
10793

10694 I
10659

•

* 8118319

10697

•

19534

*

10691

•

19531

*

10692

•

19532

*

10693-A

•

J.9533

*

16704

•

12384

*

10703
18004 1

6031-Ql

18030
18032 1

6034 1
6035 2

18852

•

18495

*

10532

•

37254

*

28206

37279

•

19513

*

30046 1

Ouantrtv

I

I
1

I

I

I
3
I
2

1

1

1

1
1

1

1
1

1

1

1

2

1

1

1
1

2
1

1

2
1
1

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Name of

Face

plate

Face

plate

set

Face

plate

stopper

Screw

for

I#

I 0551

Oil

guard

Thread guide (upper)

Thread guide (middle)

Thread guide
Felt for thread guide

Thread guide
Tension release lever rod
Tension release lever
Tens

ion

release lever

Thread controller stud

Tension stud
Thread controller spring

Thread controner spring stop
Set

screw

Spool

pin

Thread retainer
Tension

Ten:sion

Set
Tens

Tens
Thread controller disc

Thread controller disc

Tens

Thread disc

Tens

Tens

Ann cap

Ann cap

Ann

Needle plate
Needle plate

Bed slide
Bed
Set

Edge guide

Screw
Tens
Tens
Screw

bracket

:stud

screw

ion

bracket

ion

release plunger

ion thumb nut

ion

release

ion

release spring

screw
screw

cap

slide spring

screw

plate

ion

thumb nut

ion thumb nut

screw

(lower)

screw

set

screw

pin

washer

washer

set

screw

Parts

pin

screw

screw

stopper

a

FOR

wTHw

SERIAL

NUMBER

MACHINES * FOR

wSHw

SERIAL

NUMBER

2

MACHINES

I

B

I

2

I

25

I

~

27

I

•

43

\~"---27

~

2642

23

I

®

I

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I

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ARM SHAFT, TAKE UP LEVER

...t.-·xn~fl

Fi2. No.

1
2
3

•4

5

6
7

8

9
10
11

12

13

14
15
16

17

18
19
20
21

22
23

24
25

26
27
28
29
30

31

32
33

34
35
36
37
38
39
40
41

42
43
44
45

46
47
48

49
50

Parts No. Quantity

•

•

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*
*

*

10579

10726 1

10527

18003

15026
10528
10728
10506
19504
10724
10726
10523
10764
19418
10524
19417

10520

19414

10522

19416
10521
19415

10563

18006 1

10522

1786
10725
10771
19427
10566
19508
18008
10579
10725
17014
19506
10766
23637
17011
17132
18020
19521
10766
10828
18009
19528
10766
n637
17040
17041
10723
17017
17018 1
17019 1
17015
17016
17013
10571
10579
13081
10504
18470
10576 1
10579
10577
19505
10729
11879
10573

1
1

1
1
1
1

1
1

I

1

1

I

1
1
1

1

1
2
1

2
1

1
1

1

2

'1

1
2
1

2
1

1
1
1

1
2
1

1
2
1

1
1
1

1

2

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Set screw
Oil wick
Take up lever hinged stud
Thread take up
Take up lever driving stud
Needle bar
Oil

Ann
Oiling wick

Oiling wick
Needle bar

Set screw(B)

Set

Needle bar

Screw(

Screw(A)

Ann

Ann

Set screw
Oiling
Lifting

Screw
Ann

Set screw
Oiling

Ann

Set

Ann

Feed lifting cam

Set screw

Feed driving

Set screw
Feed fork

Oiling

Oiling

Arm
Set screw(A)

Set screw(B)

Gear

Set screw
Ann

Set screw

Oiling
Balance wheel

Set screw(A)

Set screw(B)

Balance

Oil wick
Lifting
Screw

4

wick

• FOR

"TH"

SERIAL NUMBER MACHINES

* FOR

"SH"

SERIAL NUMBER MACHINES

Name

of

Parts

lever

connect

shaft

oil packing stop screw

for

connecting

screw(A)

crank

B)

shaft

bushing (front) washer

shaft

bushing (front)

felt

eccentric

shaft

bushing (middle)

felt

shaft

bushing collar

screw

shaft

collar
felt
felt

presser

shaft

gear (spiral)

cover

(upper)

shaft bushing (rear)

felt

wheel adjusting screw

eccentric

ing link

arm shaft

eccentric

pin

caller

link stud

NEEDLE

'H'

·

l:i!

BAR,

~J

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FEEDING MECHANISM

42

12

47

I

10

46

I

\

~

~

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-7

8-~

9-

m

[

28

25-

~

I

29

35

38

39

I

~

i'

~

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~

I"

44

5

NEEDLE BAR, FEEDING MECHANISM

it*'

.

..t~

Fie:. No.

1
2
3

4
5

6
7

8

9

10

11

12
13
14

15
16

17

18

19
20
21

22
23
24

25

26
27

28
29

30

31

32
33

34
35
36
37
38
39

40
41

42 18018 2

43
44 8105 1

45

46
47

48

")

00~

Parts No.

•

*

10553-A

•

*

•

19412C

*

•

*

•

*

•

*

•

*

•

*

•

100446

*

•

1511D-A

*

•

*

•
*

•

*

•

*

•

8140553

*

NQ122

6026-02

•

*

•

*

Quantity
10557 1
10558 1
10556
15060
19517

10554
34713
10662
17104
30032

10516
19515
10517

19516
10515
19425
10514 2
10754
19420
16505
19419
10775 1
10703 1
10774 1
10776 1
10772 1
10773 1
10525

11875 1
11874

10532
13365
10531
19426
10726 1
10560 1
10561 1
10530
19413
10534

6035

10535

10533

11877 1
11876 1
10581 1
17048 1

18532
19409
18017 1

10519
19408

15118 1
15117 1

8100 2 tl:h.ll:.till:.

10728 1

1 <

1
1

1
1

1

1

I

1

1

1

1

1

1

1

1

1

1

1
1

1

1
1

1

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Lifting bell
Lifting bell
Presser

Screw
Vibrating

Presser
Vibrating

Screw

Inside

Screw

Nut

Lifting rock
Lifting rock
Clamp

Connecting crank
Screw

Washer

Connceting
Wing
Lifting
Needle

Screw

Hinged
Needle

Set

Needle
Oil

wick

Position

Set

Needle

Set

Needle
Needle

Needle
Slide block
Slide block
Screw

Needle bar rock frame rock

Nut (upper)
Connection
Connection rod

Hinge
Set

Nut

Vibrating

Vibrating
Screw

Oil

wick

bar

bar

presser

screw

nut

eccentric

bear

stud

bar

screw

bar

bracket

screw

bar

screw

set
bar

OPx

screw

screw

presser
presser

Name of
crank
crank

connecting

presser

extension

presser

shaft
shaft

collar

ing

rock frame

connecting

screw

thread

17

stud

Parts

link

link

bar

extension

spr

bar

foot W/Screw(1#17104)

bushing

connectin

stud

guide

#22

bar

block

bar

guide

ing

shaft

• FOR

NTH"

SERIAL

NUMBER

MACHINES

* FOR

NSH"

SERIAL

NUMBER

MACHINES

6

_.......34

33-

~

3~

23

l

7

PRESSER BAR

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0

0

0

Fig. No

1

2

3

4

5

6
7

8

9
10
11
12
13
14
15

16
17

18
19

20
21
22

23
24

25

26

27

28

29
30
31
32

33
34

• FOR

Parts No.

.

•

*

•

*

•

*

•

*

• 10554-01

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

•

*

"TH"

SERIAL

Quantity

10761
19406
10543
10761
19406
10538
10662
10541
10545
19518
10559
18480

18479
10547

10546-A

18481
10659
10660
19405
10540
10549
13360
10532
13365
10761
19406

10539-A

10796
10664
10712
19403
18080
10705
11156
19519
10706
19404

6384

6359-A

6360
18081
18862
18085

10548-A 1

10519
19408
15111

1
1
1

1

1

1

1

1
1

1

1

1
1
1

1
1
1

1
1
1

1
1

1
1

1

1
1
2
1
1
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1
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screw
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Pinch
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Presser

Tension
Presser
Hinge
Presser
Presser

Pinch

Presser
Lifting
Pinch

Set
Knee lifter lifting lever

Presser
Regulating

Supporting
Hinge

Lifting
Lifting lever connecting rod screw
Lifting lever
Knee lifter bell crank complete
Set
Bracket

Pin

bar

screw

bar

screw

bar

bar

release
release

bar

screw

bar
bar

screw

screw

bar

presser

screw

screw

bar

screw

screw

screw

lever

screw

guide block

screw

MACHINES

position guide

bushing (upper)

position guide

lifting

lifter

spring bracket

bushing (lower)

spring (flat)

connecting rod

connecting

Parts

brakcet

bracket
spring
slide

foot

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rod

8

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20

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LOWER FEEDING MECHANISM

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Fig. No

1
2
3

4

5
6
7
8

9

10
11
12
13

14
15

16
17

18
19
20
21
22
23

24
25

26
27

28
29
30
31
32
33

34

35

36
37
38

39

40
41
42
43
44
45
46
47

48

.

•

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•

*

•

*

•

*

•

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•

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•

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•

*

•

*

•

*

•

*

•

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Parts No.

18065
18694

31094
18061

21124

19535
18699
19529
1870(
19530
50230 1
18031

19525
18010
18011

18014
17207

18537

19527

18015

10754
31021

18073
18489

18524

18492

30066 1 ..t

1~072

18488
10579
18021

17041
10723
18077
18493
18018

18065
18491
10828
18490
18539
1854C
17095

10599
11412

Quantity

18523

8009

18696

18702

1786
18535
19526
18698

8044

4137

4211

8105

8105

8009

8105

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screw
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Feed

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Feed

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Washer
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Feed dog (standard type)
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Screw
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Nut
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Feed connecting
Nut

Feed rock
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Nut

Pinch screw

Feed lifting
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Pinch
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Oiling

Feed lifting crank (back)
Hinge screw

Nut
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Feed lifting
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"E" ring
Washer
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shaft

base

supporting pin

shaft

shaft

bushing (rear)

base

crank

screw

(small)

screw

shaft

shaft

screw

screw

screw (back)

felt

presser

collar

ring

Parts

base

link

crank (back)

bushing

shaft

pin

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8

9
10
11
12
13
14
15
16

17
18

19

20
21
22

23
24
25
26
27
28
29

1
2
3
4

6
7

Parts No.

18505
17053
17209

18506

18721

18507
18515
18516

18512
18511
10845
18502
17055
17057
17060

17056

12361

•

30066

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34029
18417
18418
15729
18420
18503

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7033

8100

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screw

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regulating screw
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Reverse
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Reverse lever spring
Spring
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Reverse lever
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Feed
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Washer
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Screw
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Feed

Feed

Dial
Screw
Pin
Spring
0 ring

Arm
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lever
block complete

stop

regulating

stud

regulating screw
regulating

number plate

side

cover

Parts

shaft

crank

shaft

base

pushing screw

dial

stud

• FOR

"TH"

SERIAL NUMBER MACHINES * FOR

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SERIAL NUMBER MACHINES

12

ARM

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SHAFT (UPRIGHT), LOWER SHAFT

4

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51

13

28

ARM SHAFT(UPRIGHT), LOWER SHAFT

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Fig. No

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1

2
3

4

5
6

7

8

9

10

11
12
13

14
15
16

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

41
42

43
44

45
46 17024

47
48
49 18058C
50
51

Parts No.

18045

•

18096

*

18034A 1
18033C

18035

6025

18037

•

18090

*

8009

18044

50304

•

•

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•

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•

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21124

.

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18036
18089
18039
18040
18041
18042 1

1786
18043 1
30066
18053
18054 1
10674
18052
17022
18038

8009 1
18047 1
17019 3
18056
18046
18051
18048
18049
18050
17019

18.057 1

8009
17028
10828 2
17023 1
17022 2
17026
10571
10579
17025
17020
17026
10571
10579

17022 2
17021 1

18060
18059

*

*

Quantity

1

1

1
1

1
1

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2

1
1

1
1

1

1
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1
2
1

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shaft
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shaft

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of

Parts

complete

bushing (front)

collar

shaft

finger

shaft
shaft

bushing

shaft

fork

spring

lock

ratchet

bushing (rear)

bushing

gear

(spiral)

(upright)

(upright) bushing (lower)
(upright)

(upright) bushing (upper)

(upright)

complete (lower)
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gear

gear

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screw

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30

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Fig. No.

1

2
3
4
5

6

7
8
9

10

11

12
13
14

15
16

17

18

19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

Parts

20171

30022
31206

18112
11069
18110
11069

20171

18113
18109
18111
18104
18103 1

•

11044

*

20171

11069

20067

18108

20171

11069 2
18100
18101

18094 1
18093 1
21104 1

18095
18354 1

18352 1
18353 1

15007 4
18092
18091

Quantity

No.

1

4124

1

I

1
1
1
1
1
1
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1
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felt

Oil

wick (D)

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felt
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Oil

wick
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felt
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Oil

wick (A)
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controller
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controller
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screw

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nut

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reservoir
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reservoir
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filter

Name

plug

clamp

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plug

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plug

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window

screw

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16

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Fig. No.

1

2
3

4
5
6

7
8

9

10
11

12 10937

13
14

-~'00~

No.

Quantity

Parts

•

*

•

*

30165
30164

11162

8100
12418
10650

8100
11142

15121

15122

11830
15081
16287

10677

10749

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for 15081

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HOOK(#18033) WITH BOBBIN CASE( #18096)

Fig.

No.

1

2

3

4 18096-01

5

6

7
8

9
10
11
12

13
14A
14B

15

16

17

18

Parts

18045-02
18045-04
18045-03

18096-05
18096-06
18045-08
18045-10
18045-09

18033-04
18033-05
18033-06
18033-01
18033-07
18033-08
18033-02
18033-03

•

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18045

18096

No.

Quantity

1

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Name
Thread
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Regulating
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Bobbin
Bobbin
Bobbin
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Set
Bobbin
Hook gib
Set
Rotating hook only
Hook
Hook

Thread

Set

Hook
Bobbin

tension

screw

case

case

set

set

releasing

screw

case

screw

set

screw(A)

set

screw(B)

guide

screw

Complete

case

spring

screw

pulling plate
plate
plate

base

(No bobbin

Complete

of

Parts

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protecting

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• FOR

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SERIAL NUMBER MACHINES

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SERIAL

NUMBER

18

MACHINES

ACCESSORIES

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11

10

14

12

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5

6

7

3

9

10
11
12
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14
15
16
17

18

19
20
21
22
23

24

Parts

No .

81329

6057
3123

10709

18034

N0122

10734

35254

18083
15571

11969

10748

18084

8118
8120

8121
11886
11885

6055
6054

8180

11887

6055
6055

Quant

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Accessories
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cover
Oil
Spool

pin
Bobbin
Needle
Bobbin
Thread
Knee

Wrench
Wrench
Double

Spanner
Screw
Screw
Screw

Screw

Bed

Nail
Oil

Screw
Table
Nail
Nail

lifter

driver
driver
driver

hinge

pan

driver(+)

corner

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complete

DPx 1 7 #22

winder

stand

4.0 mm

2.5 mm

6 x 7

Name

of

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complete

complete

ad

wrench

mm
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(middle)

(small)

connection

rubber

Parts

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SEIKO SEWING MACHINE CO., L TO.

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Head Office : 1 i -3, lmado l·

*$&::t:.S 'FS43

Branch:

Osaka

:r1 11

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26571.18

Telex: 2657148

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5-10,

Terada-<:ho

chome. Tailo-l<u,

SEIKO

J Cable: SEIKOSEWMCO TOKYO Telefax: 03-3873-6596

2-chome

, Tennoji-ku, Osaka

SEIKO

Tokyo

-;;1;;

03-3872-6171-2 (@J:*Ia-•!Jl 6173-4 ()(fb.:Jl

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. Japan Tel: [phone] (Exoort Deot.)

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os-779-7578 UtJ

543,

Japan TEL: [phone]

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03-3873-6596

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06-779-7501

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PARTS
18045-2 1

1

18045-4

2

18045-3 1

3

18096-1

4

18096-5

5

18096-6 1

6

18045-8 1

7

18045-7

8

18045-10

9

18045-9

10

18033-4

11

18033-5

12

18033-6

13

18033-1 I

14

18033-7 I

15A

18033-8

15B

18033-2

16

18033-3

17

,ijf6

PARTS NAME

THREAD

SET
REGULATING
BOBBIN
BOBBIN
BOBBIN
BOBBIN SET PLATE SPRING
PIN

ANTI SPILL

SET

BOBBIN
HOOK
SET
ROTATING HOOK ONLY
HOOK
HOOK
THREAD
SET

TENSION SPRING

SCREW

SCREW

CASE

CASE

PULLING PLATE

SET

PLATE

SPRING

SCREW

CASE

BASE

GIB

SCREW

SET

SCREW

SET

SCREW

GUIDE

SCREW

(A)
(B)

Parts No.P803300-1(0701)

(Rev.l)