Seiko STH-8BLD-2 User Manual

Superior

Sewing

48 WEST 25TH STREET

NEW YORK,

Machine & Supply

N.Y.

LLC

10010

PARTS

BOOK

FOR

IE:

I

..

,

II

......

.......-

MODEL

llll

STH-SBLD-2

.

+

SEIKO

SEWING

MACHINE CO.,L

TD.

,

INDEX

pages

THREAD TENSION, GUIDE,

-*KMT-

ARM

J:t.,

NEEDLE BAR, FEEDING MECHANISM

itf*,

PRESSER BAR

tiP~-

LOWER FEEDING MECHANISM

1'

FEED

iJ!

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SHAFT, TAKE

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•

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REGULATOR

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Plin

IIJ{Jt

.........

UP

...

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

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

NEEDLE

LEVER

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

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

PLATE

......

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

...

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

.

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

.

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

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

9,

11,

1,

3,

5,

7, 8

10

12

2

4

6

ARM

SHAFT (UPRIGHT), LOWER SHAFT

.3ttdl,l'fdl

LUBRICATION

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BELT GUARD · HOOK

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ACCESSORIES

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

....

...

...

........

...

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

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

....

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

...

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

13, 14

. 15, 16

17, 18

19,20

THREAD TENSION, GUIDE, NEEDLE PLATE

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41

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THREAD TENSION, GUIDE, NEEDLE PLATE

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No.

Parts No.

19421C-A

Fig.

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 6035
41
42
43
44
45

tttJi

10698

8093

10700

8100
10551
10682
10683

10759-A

10760
19510
10720
19422 2
10678
19512 1
19518

10689 1
10690

8100

10709

15062

19421
19511
18085
10791
10793
10694

B118319

19534
19531
19532
19533
12384
10703
18004 1

6031-01

18030

18032C

6034

18495
37254
28206
19513
30046

Quantity

1
1

1
1
1
1
1
1
1
3
1

1

1

1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1

2
1
1
1
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1

2

1
1
1

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Name of Parts

Face plate
Face plate set screw
Face plate stopper pin
Screw for # 1 0551

guard

Oil
Thread guide (upper)
Thread guide (middle)
Thread guide (lower)

Felt for thread guide
Thread guide screw
Tension release lever rod
Tension release lever screw
Tension release lever
Thread controller stud
Tension stud set screw
Thread controller spring
Thread controller spring stop
Set screw
Spool pin
Thread retainer
Tension bracket complete
Tension bracket
Tension stud
Set screw
Tension bracket pin
Tension release plunger
Thread controller disc
Thread controller disc screw
Tension thumb nut
Thread disc
Tension release washer
Tension release spring
Arm cap screw
Arm cap screw washer
Arm cap
Needle plate set screw
Needle plate
Bed slide complete
Bed slide spring
Set screw
Edge guide plate
Screw
Tension thumb nut stopper
Tension thumb nut
Screw

2

ARM SHAFT, TAKE UP LEVER

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2

I I

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25

I

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27

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44

45

3

"ARM

SHAFT, TAKE UP LEVER

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Fig.

·

~"on~

Parts No.

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

17017C 1

37

38

39

17015C
40
41
42
43

44

45
46
47
48
49
50

Quantity

10579

10726

10527
18003
15026
10528
10728
19504 1 .Udl)dlti
10724
10726 1
10523
19418 1

19417
19414
19416
19415 1
10563
18006

1786
10725
19427 1
19508
18008
10579
10725
19506

23637

17132 1
19521
10828
19528
23637
17040 1
17041
10723

17018 1
17019

17016 2
17013
10579 1
13081
18470
10576
10579
19505 1
10729
11879
10573

1
1
1
1
1
1
1

1

1

1
1

1

1
1
1

2

2
1
1

1

1
2

1
2 i*IJJ:.'"ftJb..ll:
1
2

1

1

1
1

1

2

1
1
1

1

1
2

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JJ.,

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Set screw
Oil wick
Take up lever hinged stud
Thread take up lever
Take up lever driving stud
Needle bar connecting link
Oil wick
Arm shaft
Oiling wick for arm shaft
Oiling wick

Needle bar connecting link stud
Set screw (B)
Set screw (A)

Needle bar crank
Screw (B)

Screw (A)

Arm shaft bushing washer (front)

Arm shaft bushing (front)

Set screw
Oiling felt

Lifting cam
Screw

Arm shaft bushing (middle)
Set screw
Oiling felt

Arm shaft bushing

screw

Set

Arm shaft

Feed lifting cam
Set screw

driving eccentric

Feed
Set screw
Feed fork

felt

Oiling
Oiling felt presser pin
Arm shaft gear (spiral) complete
Set screw (A)
Set screw (B)
Gear cover complete (upper)
Set screw
Arm shaft bushing (rear)
Set screw
Oiling felt
Balance wheel
Set screw (A)
Set screw (B)
Balance wheel adjusting screw
Oil wick
Lifting eccentric
Screw

Name

oil packing stop screw

collar

collar

collar

of

Parts

4

NEEDLE BAR, FEEDING MECHANISM

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44

5

·NEEDLE BAR, 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

·

J:m

Parts No.

~J

M1~

Quantity

10557
10558
10556
19517 1

10553-A

10554
34713 1
17104

19412C

19515
19516 1
19425
10514
19420

19419
10775
10703
10774 1
10776

10772C

10773

100446 1

11875

15110-A

13365 1
19426 1
10726

10560
18085 1

19413 1

6035 1

8140553

10533

N0122 1

11877 1
11876
10581
17048 1

6026-02

19409
18017
18018
19408

8105
15118 1
15117 1

8100 2
10728

1
1
1

1
1

1
1
1

1
2
1

1
1 ..tllt'i
1

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Name

of

Parts

Lifting bell crank link
Lifting bell crank
Presser bar connecting
Screw
Vibrating presser bar extension
Presser bar extension spring
Vibrating presser bar
Screw

Inside presser foot W/Screw (#17104)
Screw
Nut

Lifting rock shaft
Lifting rock shaft bushing
Clamp screw
Connecting crank, lifting rock shaft
Screw

-

Washer
Connecting
Wing nut
Lifting eccentric connection

Needle
Screw

Hinged stud
Needle bar rock frame
Set screw
Needle bar connecting stud
Oil wick
Position bracket
Set screw
Needle bar
Set screw
Needle set screw
Needle bar thread guide
Needle DPx17 #22
Slide block
Slide block
Screw
Needle bar rock frame rock shaft
Nut (upper)
Connecting crank,
Connection rod
Hinge screw
Set screw
Nut
Vibrating presser bar
Vibrating presser bar guide
Screw
Oil wick

collar

bearing

stud

link

complete

needle bar rock frame rock shaft

block

6

PRESSER BAR

~·;t-OO'(!

/34

33-

~

3~

23

I

7

. PRESSER BAR

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Fig.

No.

Parts No.

Quantity

BU

fa

~

Name

of Parts

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

ftJ;IqWJ.I:.

1

19406
10543
19406
10538
10662
10541
19518
18480
18479
10547

10546-A

10659

19405
10540
13360

13365

19406

10539-A

10796
10664

19403
18080
10705

19519

19404

6384

6359-A

6360
18081
18862
18085

10548-A

19408
15111

1
1

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11

1

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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
2
1
1
1

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Set screw
Presser bar position guide
Set screw
Presser bar bushing (upper)
Pinch screw
Presser bar position guide bracket
Screw
Screw
Presser bar lifting bracket
Tension release spring
Tension release slide
Presser bar lifting lever
Hinge screw
Presser bar
Presser bar spring bracket
Pinch screw
Set screw
Presser bar bushing (lower)
Lifting presser foot
Pinch screw
Set screw
Foot lifting lever
Presser bar spring (flat)
Presser bar regulating screw
Supporting screw
Hinge screw
Lifting lever connecting rod joint
Lifting lever connecting rod screw
Lifting lever connecting rod
Knee lifter bell crank complete
Set screw
Bracket guide block

Pin

8

LOWER FEEDING MECHANISM

~~

~)

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v

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33

v

X l J

40

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42

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Fig.

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

No.

Parts No.

18523

8009
18065
18694
18696
31094
18061
18702

19526
19535
19529
19530
50230
18031

19525
18010

18011

18014

17207

19527 1 m

18015

31021
18489

18492
30066
18488
10579 1
18021
17026 1

10723
18493
18018

18065
18491
10828 2
18490
18539
18540
17095
10599
11412

Quantity

1786 1

4137
4211

8105

8105

8009

8105

1
1
2
1
1
1
1
1

1
1
1
1
1
1
2
1
1
1
2
1
1
1

1
1
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of

Feed shaft bushing(front)
Screw

screw

Set
Feed rock shaft base
Feed base supporting pin
Stop ring
Feed rock shaft
Feed shaft bushing( rear)
Screw
Feed base
Bell crank
Pin
Washer
screw
Feed dog(standard type)
Set screw
Feed fork connection
Screw
Nut(large)
Nut( small)
Pin screw
Feed connecting link
Nu1
Feed rock shaft crank(back)
Hinge screw
Nut
Pinch screw
Feed lifting shaft bushing
Set screw
Feed lifting crank(front)
Pinch screw
Feed lifting rock shaft
Set screw
Feed lifting connecting rod
Oiling felt
Oiling felt presser pin
Feed lifting crank (rear)
Hinge screw
Nut
Pinch screw
Feed lifting collar
Screw
"E"rlng
Screw
Washer
"E"ring
Washer
Nut

Parts

10

FEED REGULATOR

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No.

Parts

No.

1 18505 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

17053 1
17209 1

8105

18506

18721C

18507 1
18515 1
18516 1

7033 1
18512 1
18511
10845 1
18502 1
17055 1
17057 1
17060 1
17056 1

30066 4
50174 1
18504 1
18416 1
34029 1
18417
18418 1
15729 1
18420 1
18503 1

8100 2

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of

Parts

Feed regulator
Pinch screw
Feed regulating screw
Nut
Reverse lever shaft crank
Reverse block complete
Screw
Reverse lever spring
Spring stop
Screw
Reverse lever shaft

Reverse lever

Screw

Feed regulating base
Feed regulating support stud
Washer
Supporting stud pushing screw
Screw
Screw
Pin
Feed regulating screw
Feed regulating dial
Dial number plate
Screw
Pin

Spring
0 ring
Arm side cover
Screw

12

ARM SHAFT(UPRIGHT), LOWER SHAFT

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1
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7
8
9

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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
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42
43

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46
47
48
49
50
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Parts

18096

18034·A

18033
18035

18090

18044

18089
18039
18040
18041
18042

18043

30066

18053
18054
10674
18052
17022

18038

18047

17019
18056
18046
18051

18048

18049

18050
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18057

17028C

10828

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17022
17026
10579
17025
17020
17026
10579
17024
17022

17021C
18058C

18060
18059

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No.

6025

8009

8009

1786

8009

8009

Quantity

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of Parts

Bobbin case
Bobbin
Rotating hook
Hook supporting

screw

Set
Hook shaft bushing (front)
Set screw

releasing cam

Thread
Set screw
Hook driving shaft
Tread

release finger

Set screw

releasing shaft

Thread
Thread

releasing shaft bushing

Set screw

releasing shaft fork

Thread
Pinch screw
Push button
Push button spring
Clip
Hook shaft lock ratchet
Set screw
Hook shaft bushing (rear)
Setscrew
Safety clutch (left)

screw

Set

Lower shaft
Oil wick
Set screw
Safety

clutch (right)
Steel ball
Spring
Set screw

Lower shaft bushing
Set screw
Lower shaft gear
Set

screw

Arm shaft (upright) gear

screw

Set
Oiling felt

screw

Set
Arm shaft (upright) bushing
Arm shaft (upright)
Oiling felt

screw

Set
Arm shaft (upright) bushing (upper)
Set screw
Arm shaft (upright) gear
Gear cover complete (lower)
Gear cover (lower) sealing screw
Pinch screw

plate

(spiral) complete

(lower) complete

(lower)

(spiral) complete

14

LUBRICATION

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29

31

33

15

LUBRICATION

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No.

Parts No.

Fig.

1
2
3

4 31206
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

20171

4124

30022

18112
11069

18110

11069
20171
18113

18109
18111

18104

18103

11044
20171

11069
20067

18108
20171
11069

18100
18101
18094

18093
21104
18095

4137
18354
18352
18353
15007
18092
18091

Quantity

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
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1
1
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2
1
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(B)

Name

Rubber plug
Screw
Oil wick clamp
Nut
Vinyl pipe(C)
Oil felt
Oil wick(D)
Oil felt
Rubber plug
Vinyl pipe(D)
Oilw

ick(C)
Vinyl pipe(B)
Felt
Oil reservoir
Screw
Rubber plug
Oil felt
Oil packing
Oil wick(B)
Rubber plug
Oil felt

Vinyl pipe(A)
Oilwick(A)
Oil controller
Oil controller plate
Screw
Lock screw
Lock nut
oil reservoir gasket
Oil reservoir plate
Oil reservoir window
Screw
Oil packing
Oil filter plug screw

of

Parts

16

BELT GUARD (OPTIONAL EQUIPMENT)

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3

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Fig.

No.

Parts No.

1
2
3
4 12418 1

5

6

15099 1
15098

8100 2

8100 1

11142 1

Quantity

1

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Bell guard upper cover
Bell guard
Set screw(upper)
Set screw
Set screw(lower)
Washer

of

Parts

HOOK

:fJv~M~IJS

COMPLETE

18033C:fJvfJl·18033:fJv

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08

Quantity

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lin

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Name

Thread tension spring
Set screw
Regulating screw
Bobbin case

Bobbin case pulling plate
Bobbin set plate
Bobbin set plate spring

Thread releasing protecting spring

Set screw
Bobbin case base

Set screw
Rotating hook only
Hook set screw(A)

Hook set screw(B)
Thread guide
Set screw
Hook complete(No bobbin case)

of

Parts

Fig.

No.

Parts No.

1
2

3
4
5
6
7
8
9

10 18033·04
11
12

13
14A
14B

15
16
17

18045·02
18045-04 1

18045-03 1

18096·01

18096·05
18096·06
18045­18045·10
18045-09 1

18033-05 1
18033·06 3
18033-01 1
18033-07 1
18033·08

18033·02
18033-03 3

18033

18-B

18

ACCESSORIES

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10

9

11

12

13

14

15

20

21

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