Пуговичная машина juki mb 373 инструкция

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1. SPECIFICATIONS

MB-373

1

Sewing speed

2

Number of stitches

3

Amount of feed

4

Stitching pattern

5

Button size

6

Needle bar stroke

7

Needle

8

Automatic thread trimmer

9

Presser lifter

10

Stop-motion unit

11

Power supply

MB-377

1

Stitching pattern

2

Needle

Other specifications are same as those of MB-373.

Max. 1,500 rpm

8, 16, and 32 stitches

(6, 12 and 24 stitches are also possible by changing the cam.)

Crosswise feed

2.5 to 6.5 mm

Lengthwise feed 0, 2.5 to 6.5 mm

コ -shape, Z-shape, Π -shape, and X-shape

10 to 28 ø mm

48.6 mm

TQ x 7 #16 (#14 to #20)

Interlocked with the presser lifter.

Consists of a fixed knife and a moving knife.

Automatically operated (Pedal-system is also available.)

Automatically operated (equipped with speed slowing device)

200 W (1/4 HP) single- or three-phase

コ -shape, Z-shape, and X-shape

TQ x 1 #16 (In case of attachments for medium button (Z202) and

large button (Z201) TQ x 7 #16, #14 to #20)

1

1

− 

− 

Normal speed 1,300 rpm

loading

Summary of Contents for JUKI MB-373

This manual is also suitable for:

Mb-377

File Specifications:

1922/1922581-mb373.pdf file (02 Jul 2023)

Accompanying Data:

JUKI MB-373 Series Sewing Machine PDF Manual  (Updated: Sunday 2nd of July 2023 08:34:05 PM)

Rating: 4.9 (rated by 80 users)

Compatible devices: LZ-2290A Series, LBH-1790A Series, MB-1373, LK-980 Series, LH-4500C Series, MB-1800B, AP-874/IP-420, MF-7900 Series.

Recommended Documentation:

Manual  (Text Version):

(Ocr-Read Summary of Contents of some pages of the JUKI MB-373 Series Document (Main Content), UPD: 02 July 2023)

  • 14, −14 − (13) Positioning the needle driving pulley pressure applying lever The clearance at the stop-motion position (while the driving pulley is running idle) should be 0.2 to 0.3 mm. (14) Positioning the thread pull-off lever Adjust the position of thread pull-off lever 1 so that the dimension between thread guide pole 4 and thread pull-off lever 1 is 5 to 9 mm at the stop-motion position. Standard Adjustment Needle driving pull…

  • 3, −3 − ™ Turn the hand wheel by hand and loosen screw 1 in the Fig. A in the thread take- up lever to adjust so that the upper engraved line of the two engraved lines on the needle bar aligns with the bottom of lower bushing 3 when the needle bar is at its lowest position. For the old type sewing machine, in addition, adjust the position so that needle clamp screw 4 enters the slot of lower bushing 3 as …

  • 10, −10 − (8) Positioning the thread nipper The clearance between thread nipper 1 and nipper block 2 should be 0.8 to 1.2 mm while the machine is in operation. (In case of MB-377 : 0.4 to 0.8 mm) (9) Positioning the stitch adjusting cam The clearance between the roller and the recess of the cam should be 0.8 mm at the stop-motion position. Standard Adjustment 0.8 to 1.2 mm 0.8 mm A Rotating direction of cam 1 2

  • 19, JUKI MB-373 Series −19 − ™ Make adjustment after tilting the machine head by loosening two nuts 3 and moving connecting screw 4 back and forth. Loosen nuts 3 so that thread trimming connecting joint 5 becomes almost horizontal. ™ If the above distance is too large, the timing of the thread trimming will be delayed, and excessively long thread will remain on the wrong side of a fabric. On the contrary, if the distance is too small, thre…

  • 33, iii R SINGLE THREAD, CHAINSTITCH BUTTON ATTACHING MACHINE WITH AUTOMATIC THREAD TRIMMER MB-373 MB-377 ENGINEER’S MANUAL 29231701 No.01 (WITH KNOT-TYING MECHANISM)

  • 8, −8 − (6) Lift and pressure of the button clamp 1) Lift of the button clamp A MB-372 : 12 mm MB-373 : 9 mm MB-377 : 8 mm for コ-shape 8 mm for Z -shape 10 mm for X -shape 2) Pressure of the button clamp Adjust the position of pressure adjusting nut 1 to 4 to 5 mm from the lower side of the screw section of pressure adjusting bar 2. (7) Thread tension disc No.1 Adjust so that the thread tension disc No.1 floats by 1 mm at the time of stop moti…

  • 12, −12 − (10) Positioning the stop motion disc and the stop motion plunger 1) The clearance between the stop motion disc and the stop motion plunger should be 2.4 mm while the machine is in operation or at the position of 3 to 4 stitches from the position of stop-motion. 2) The clearance between the stop motion plunger lever and the stop motion plunger should be 8.5 mm. (12) Positioning the button clamp lifting link The clearance between button c…

  • 29, − 29 − 7. THREAD TRIMMING TROUBLES AND THE CORRECTIVE MEASURES Troubles Causes Corrective measures 1. Thread is not trimmed. The needle does not come down into the correct point of a button hole. The final stitch is skipped. The height of the thread separating claw of the moving knife is not correct. Correct the position on the looper. Refer to the clause “2. (2) Positioning the needle and the looper” (pa…

  • 17, −17 − ™ Perform adjustment so that the clearance between the end surface of button clamp lifting lever 1 and the adjusting screw 2 becomes 0.5 mm. Then tighten nut 3. Adjustment Procedures Results of Improper Adjustment

  • 15, −15 − ™ Loosen nut 1 of the screw of the needle driving pulley pressure applying lever and adjust by screwing in and out screw 2. The clearance will become larger by screwing it in. ™ Perform adjustment by loosening screw 2 of the nipper bar block (rear) and moving nipper bar block (rear) 3 to the right or left. ™ If the amount of movement of the nipper bar block (rear) is too large, at the beginn…

  • 20, JUKI MB-373 Series −20 − (1) The mechanism and the name of each component of the knot-tying As shown in the figure below, when the machine is running, the stitch adjusting cam rotates and the thread bind arm roller rides over the thread bind notch attached to the stitch adjusting cam making the thread bind plate actuate by means of the respective links to hook thread. The slack portion of the hooked thread will be tightened by the thread wring lever at the time of stop motion. (2) Positioning…

  • 28, JUKI MB-373 Series − 28 − 6. CORRECTIVE MEASURES FOR MECHANICAL FAILURES (1) Defective stop motion 1) The sound of the stop motion is low, and the machine stops before reaching the required position. ™ Decrease the clearance between the stitch adjusting cam and the roller. ™ Decrease the tension of the clamping pressure spring. ™ Reduce the axial play of the needle driving pulley at the time of stop motion. (2) The button clamp …

  • 13, −13 − 1) Perform adjustment to provide the 2.4 mm clearance after loosening screw 1 of the stop motion tripping lever. Remove the stop motion disc pressure lever and the needle driving pulley, insert a 2.4 mm gauge or a 3 mm wrench between the stop motion plunger and the stop motion disc, and tighten srew 1 of the stop motion tripping lever since the stop motion lever shaft becomes loose. 2) Perform adjustment to provide the 8.5 mm clearance by the stop …

  • 5, −5 − ™ For adjusting the timing of the travel of the yoke slide, align the engraved marks of the loop positioning finger cam and the triangle loop positioning finger cam with the engraved mark of the cam and looper sleeve after the adjustment of the looper so that the engraved marks are on a straight line. Then temporarily tighten the screws. 1) Adjust the crosswise travel timing of the yoke slide in the rotati…

  • 21, −21 − ™ Loosen screw 1 and adjust so that the clearance between the outside periphery of the roller of the knot-tying arm and that of the stitch adjusting cam should be 1 to 1.5 mm at the time of stop-motion. ™ If the clearance is too large, the stroke of the thread bind plate will become short. ™ If the clearance is too small, the roller may come in contact with the outside periphery of the cam, or the thread bind plate may come in contact with the throat plate. A…

  • JUKI MB-373 Series User Manual

  • JUKI MB-373 Series User Guide

  • JUKI MB-373 Series PDF Manual

  • JUKI MB-373 Series Owner’s Manuals

Recommended: MHS550, DV 16540, 22-90830, 3300128

Links & Tools

Operating Impressions, Questions and Answers:

Single Thread, Chainstitch Button Sewing Machine

From the library of: Superior Sewing Machine & Supply LLC

w.ith

Automatic Thread

Trimmer

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CONTENTS

From the library of: Superior Sewing Machine & Supply LLC

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.;x

1. BUTTON CLAMP MECHANISM COMPONENTS

* 9

::..-

‘:1-:t

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001*

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. CLUTCH

7 7

3. BUTTON CARRIER COMPONENTS

;f.

4. SPINNER COMPONENTS

* 9

5.

DRIVE

1J

REDUCTION GEAR COMPONENTS

6.

ilitll~IVJ1j

7. CHUTE MECHANISM COMPONENTS

~

8. BUTTON FEEDER COMPONENTS

;f-9 ::..-7-(

9. LOADER COVER & MAGNET COMPONENTS

o-‘)1—JJ/’-

10. CONTROL BOX COMPONENTS

::J

11.

L.

SW

L.

12.

TABLE

3CMB6

NUMERICAL

*51

OPERATING MECHANISM COMPONENTS

·:;

71i:lb001j . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

9

:,.-.:f—\7

::..-itr!i~l!f.>001j

CAM COMPONENTS

.L-001*

IJ

71VJ1j

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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

.:L-

~

!V11~

. . . . . . . . . . . . • . . . . . • • . . . • . . . . • . • . . . . . . • • • . . . • • • . . . . . . • 13

-‘>’-IJil1j……………………………………….

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WIPER COMPONENTS

SW?

;f

OF EXCHANGING PARTS

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7

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/~-001~

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

INDEX

OF

~IVHj

·

………………………………..

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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

PARTS

……………………………………………..

·

…….

11

15

17

21

24

1. BUTTON CLAMP MECHANISM COMPONENTS

From the library of: Superior Sewing Machine & Supply LLC

~—————————-,

1 2

6-1

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35

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REF.NO.

From the library of: Superior Sewing Machine & Supply LLC

NOTE

PART

NO.

D E S C R I P T I 0 N

AMT.

t

2

3

4

5

6-t

7

8

9-t

tO-t

tt

t2
t3
t4
t5
t6
t7
t8
t9
20
2t
2t-t
22-t
23
23-t
24
25
26
26-t
27

27-t
28
29
30
31
32
33
34
35
36
37
38
39
40
41

42
43

44

45
46

B2542-372-RAO

B2546-372-000

B2549-372-ROO
SD-050030t-SP
SS-709t480-SP
GBR-Ot604000-B
GBR-Ot606000
GBR-Ot607000

NS-6t203t0-SP
GBR-Ot605000-A

NS-60903t0-SP
GBR-Ot601000-A

B2548-372-RAO
SS-9t2t340-CP
SS-8t505t0-TP

WP-050t0t6-SD

SD-055030t-SP

B2547-372-000
SS-7t50940-SP

B2542-372-ROO

B2555-372-RAO

not

B2555-372-RAA

not

B2555-372-ROA

B2556-372-ROO

not

B2556-372-ROA

SS-7090520-TP

B2559-372-000

B2557-372-RAO

not

B2557-372-RAA

B2557-372-RAO

not

B2557-372-ROA

B2558-372-ROO
SS-7090520-TP

B2559-372-000

B2560-372-000
SD-064039t-TP

B2561-372-000
B2552-372-ROO

B2553-372-000
GBR-01602000
SS-9091010-SP
B2540-372-000
B2541-372-000
B2544-372-000
B2545-372-000
B3t25-0t2-000
B4416-373-000
D93t7-762-TOO
WP-06t2056-SD
B4420-373-000

BUTTON
BUTTON
CLAMP
HINGE

SCREW

CLAMP
RELEASE

SPRING

NUT
CLAMP

NUT
CLAMP
BUTTON
SCREW
SCREW
WASHER

HINGE
JAW
SCREW
BUTTON

BUTTON
JAW
JAW
BUTTON

BUTTON
SCREW

BUTTON
BUTTON
JAV
BUTTON
JAW
BUTTON
SCREW
BUTTON
BUTTON
HINGE
BUTTON
BUTTON

CLAMP

CLAMP
SCREW
SCREW
9/64-40

RELEASE

RETURN

HOOK

3/t6-28

RELEASE

9/64-40

RELEASE

CLAMP

3/t6-28

t5/64-28

5X10.5Xt

SCREW

LEVER

t5/64-28
CLAMP
CLAMP

LEVER,

LEVER,

CLAMP
CLAMP

9/64-40

CLAMP

CLAMP

LEVER.

CLAMP

LEVER,

CLAMP

9/64-40

CLAMP
CLAMP

SCREW

CLAMP
CLAMP

NUT
SLIDE
SCREW

HINGE
SNAP

BUTTON

PRESSURE
THREAD
SPRING
GIMP
WASHER

BRACKET

9/64-40

PIN

RING

CLAMP

ADJUSTING
TENSION
GUIDE

GUIDE

6.1X18.5X2

CUSHION

HOLDER

LIFTING
A
D=

5
L=14
LINK

SPRING

BRACKET

LEVER

STOP

L=t3

L=

D=5.5

HOLDER

L=9
HOLDER
JAW

LEVER,

LEFT

ASM.

LEFT

PLATE

PLATE

L=

4.5

LOCATING

JAW

LEVER.

RIGHT

JAW

ASM.
LEVER.

RIGHT

PLATE

L=

4.5
LOCATING
STOP

PIN

D=

6.35
SPRING
SLIDE

L=10

PRESSURE

STUD

SHAFT

SHAFT

SPRING

ASM.

ROD

H=

3

SHAFT

LEVER

ASM.

4.7
H=3

LFFT

ASM.

SPRING,

LEFT

SPRING,LEFT

PIN

RIGHT
RIGHT

SPRING,

RIGHT

PIN

H=

3.9

GUIDE

ADJUSTING

SPRING

NUT

ASM.
ASM.

BAR

7~-~·3-

1~~~-f

t7UJ\·-

1·~-1~·

1·~-1~·

~7~7°~~~-3~~~

i~~·3

l7°~~~·

D’~~t’~

~~~·3~~~·~

o’t~t’~

~7~7°~~~·3

1~~1~

o’t~t.·~~

~~-1~·

t7t•t•-1

~·~-1~·

t.·1~

~~t7-1~·

7~~~-f

t-·1~,~~1~

t-·1~,~~1~

t.·~~1~~1~

t-·1~

t-·~~,~~1~

~~t7-1~·
‘~~1~

t-·1~,~~1~

t-·~~,~~1~

t-·~~,~~1~

t.·1~’~U~

t.·1~

~~t?-1~·

‘~~1~

7~~1~

1·~-1~·

t-·1~

t.·1~

t.·1~

l7~~

D7~~t.·~~

7~~~-f

7~~~-f

ttl
ttl

~~f3-~

1\·i~~t.·-

~~tt

t7t•:JJ•-1

~11·~ ~7~3~

t.·~~,~~~-f

~1~·1,~

~~-1~·

D=5
D=3.6

t~·~J\·-1

7’~

A

H=3

H=8.5

3/16-28
9/64-40

~J\·-

t7*~J\·-

t5/64-28

~~

3/t6-28

L=4.7

L=t3

5Xt0.5Xt

D=5.5

‘~~1~

~~’~9·~

‘~~~91\•-1

~~J\·-1

‘~~~11\•*

~11\

t7*to~

D=6.35

7~~1~

~·~~·1~

~-~~·y~

·~H9

~~,~~·~

~~,~~·~

17~3~

f3-t,J\•-1

t’~

1~t~~·;

H=3

~~1~1·~

15/64-28

t9·~

~~

t9·~~~

1

t1

J

t9·~

~11\·-1

9/64-40

~·~~·to~

~~·

~~

~*·

~~

~*·

~~

H

~~·

9/64-40

*

~·~~·to~

H=3.9

J\•*

~~-1~·

9/64-40

~~?

f3-t7t.•-

J\·-1

L=9

t1·~

L=4.5

L=4.5

L=lO

6.tX18.5X2

B

t

(1)

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

(2)

(1)
(2)
(1)

(1)

(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)

(1)

(1)

(1)

(1)
(1)

(1)

(1)
(2)

(2)

(1)
(1)
(1)

(1)

(2)

1
1
1
t

2

t

1

2

t

Note

(;i:!c I #01 ….. Special order

(Small

part

button

I

-2-

2. CLUTCH OPERATING MECHANISM COMPONENTS

From the library of: Superior Sewing Machine & Supply LLC

-3-

47

REF.HO.

From the library of: Superior Sewing Machine & Supply LLC

1

2

3

4

5-1

6

7

8

9

10

11

12
13
14
15
16
17
18
19
20
21
22
23
24
25
27
28
29
30

31

32

33

34
35
36

36-1

37-1
37-2
38
40
41
42
43

44

45

46
47
48
49
50
51

52

NOTE

PART

GBR-011030AO
GBR-012230AO-A
GBR-01222000
SS-6090810-SP
GBR-01231000-A
WS-0610002-KH
SS-9660720-SP
SM-6051802-SD
PT-0402000-CH
GBR-01220080
SS-8660512-TP
SS-8660512-TP
GBR-01238000

WP-0330500-MB

SM-4040601-SB

NS-6120310-SP
SS-6121010-SP
GBR-01227000
SS-6122030-SP
GBR-01225000-A
SS-9152130-CP
GBR-01229000-A

PS-0400141-KH
SD-0450211-SP
GBR-01183000
GBR-01221000

WS-0410002-KH
SM-4040601-SB
SS-6121010-SP
SS-9091010-SP

WP-0450500-SA
GBR-01240000

MA0-11602HOO
GBR-01234000

WS-0310702-KS

WP-0330500-MB
SM-4031801-SB
SM-4031001-SC
GBR-01235000
BT-0300250-AO
GBR-01236000
GBR-01237000
BT-0440330-ZO
D2120-555-COO
GBR-01233000
D6028-555-BOB
D6043-555-BOO
WP-0501016-SC
MAZ-02508000
WS-0410002-KN
GBR-01241000

GBR-01242000

NO.

D E S C R I P T I 0 N

SIDE

COVER 2 ASH.

CLUTCH

OPERATING
STOPPER
SCREW
SWITCH
SPRING
SCREW
SCREW
TAPERED
THRUST
SCREW

SCREW
SWITCH
WASHER
SCREW
HUT
SCREW
TENSION
SCREW
SHAFT
SCREW
CLUTCH
SPRING
HINGE

9/64-40

OPERATING

WASHER

1/4-40
M5X0.8

PIN

SWITCH
1/4-40
1/4-40

MOUNTING

3.3X6X0.5

M4

L=6

3/16-28

3/16-28

SPRING
3/16-28
PLATE
15/64-28

PLATE

PIN

SCREW
REINFORCEMENT
SOLENOID
SPRING
SCREW
SCREW

SCREW

WASHER

A

LOADER

PLATE

WASHER

M4

L=6
3/16-28
9/64-40

M4

MAGNET
MICRO-SWITCH
MICRO-SWITCH
SPRING
WASHER
SCREW

SCREW

WASHER

3.3X6X0.5
M3X0.5
M3X0.5

SOLDERLESS

TUBE

ASH.
PUSHBUTTON
PUSH-BUTTON

INSULATED

CORD

BRANCH

9-POLE

PIN

TERMINAL,
WASHER
CORD
SPRING
SWITCH
NUT

PLATE

TUBE

PRESSER

CONNECTOR
RECEPTACLE,

5X10.5Xl

HOLDER

WASHER

INSTALLING

LEVER

L=

7.5
LEVER

6.1X12.2X1.5
L=7
L=18

CAM

ASM.
L=5
L=5

PLATE

L=lO
L=20

L=20.5

4X14

D=

4.50

H=

STUD

B
M4
L=10

L=10

COVER

L=18
L=lO

TERMINAL
SWITCH

SWITCH

8N-1021

CAP,

(120V)

WHITE
MALE

M4

PLATE

ASM.

2.1

RED

:b$!

1

t•’J1’J.

~71f

iJ’-f~-~~—

;H’:I~o-

~7*~

..

A-i’1f’H·o)~~·-

~·*iJ’•;IJ•i

0′:/:b~t.·~~

0’1:11~Ytt.·,~

1″-~o~o~

A7A~

A-i’1f:bJ.

~~*~·

~~*~·

-~t.·$1~

~7iJ’•t•*

t~·l*~·

U1:11~t»‘J~

~7*~·

~’}\OJ}~•*

~7*~·

~’\’7~tiJ’l

O’:b~;t.·~~

2

~~

~~

9/64-40

L=7.5

M6

1/4-40

L=7

M5X0.8

L=18

4X20

~~

1/4-40
1/4-40

~1’1f~~’1t1$Z

L=5
L=5

l:ll

..

$1~’

M4X0.7

M3
L=6

3/16-28

3/16-28
3/16-28

L=lO
L=20

15/64-28

iJ’3-1$Z

~7°l}~~·~o~

$!·~*~·

t.H-~$!’1~

‘JltN~·

~

*,.

..

11

t~·l*~·

~7*~·

D1:11~t.·~~

~7f•11•*

n-~·x2·=1n

~1’1f:b~·

q-{~OA1’1f

~·*,.:b.*

~7iJ’·:b·*

t~·l*~·

t~·l*~·

q-{~D~1’1f

ND~fl.-7•

-~;J;·$!~

t~;r;·$!~

t·,l~

N!]:.t 2j:.t7°

~t~

l*~$!

9~3~

t1D~

~o~

$!-~t~

~7iJ’·:b·*

J-t-·~u·~

~·*iJ'»‘:II

q1~D~1’H~~·

q1~DM$H~~t’~

4X14

D=4.5

H=2.1

B

tiJ’I1$Z

*

M4

M4X0.7

3/16-28

9/64-40

l:II•$Zq~

3.1X5.9X0.7

l:b•$Zq~

M3X0.5
M3X0.5

Y’f’\’~$!~~

~1,1

f:J.-7.

5X10.5X1

.. * H4

L=6

L=lO

L=10

M4

M3
L=18

L=lO

D=3.3X4.4

ltt7°$Z~~(~D)

fA

AHT.

1

1

1

2

1

1

1

4

2

1

(2)

1

1

2
2

1

1

1
1

1

1

1
1

1

1
1

4

4

2

1

2

1

2

2

6

6

2

2

5

0.1

1

1

0.9

1

1
1

9

4

1

2

1

1

4-

3. BUTTON CARRIER COMPONENTS

From the library of: Superior Sewing Machine & Supply LLC

56-t%~

5~

57——-n.

-5-

REF.NO.

From the library of: Superior Sewing Machine & Supply LLC

I

2

3

4

5

6

7

R

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
49-1
50

50-1
51
52

53

54

55

56
57
58
59
60
61
62
63

64

65

66

67
68

NOTE

PART

GBR-01173000
GBR-01170000
GBR-01175000
NH-6060002-SD
GBR-01146000
NM-6040001-SC
WS-0410002-KR
GBR-01171000
IIP-0450000-SD
WP-0612066-SP
B1116-804-000
GBR-01177000-A
R0-6465701-00
GBR-011440AO
SS-9120910-TP
WS-0410002-KR
GBR-011470AO
SS-8660512-TP
NS-6090310-SP
B2557-280-00B
GBR-01169000
SS-8660810-TP
GBR-011020AO
GBR-01161000
GBR-01160000
GBR-01159000
GBR-01158000
SS-9152130-CP
SS

-9151630-CP
GBR-01141000
GBR-01140000
GBR-011390AO
CQ-3030000-00
GBR-01164000
GBR-011380AO
SS-9152130-CP
GBR-01357000
GBR

-01184000

G

BR

-01172000

NS-6110310-SP

SS-7112420-SP
GBR-01119000-A
GBR-011350AO
GBR-011300AO

NS-6080210-SP

SS-6081810-SP
GBR-01129000
PS-0400151-KH
GBR-01149000

«02

GBR-01149AOO
GBR-01143000

«02

GBR-01143AOO
GBR-011480AO
SS-8620610-SP
GBR-011330AO-A

SS-9660720-SP

GBR-01176000

SS-9080410-SP

GBR-01162000

GBR-011500AO-A

«01

GBR-01152AAO

«01

GBR-01152BAO

«01

GBR-01152CAO

«01

GBR-01152DAO
SS-2090510-SP
GBR-01101000
SS-9152130-CP
PT-0402000-CH
SM-6061502-SD
GBR-01137000

NO.

SCREW
ROD
ROD
NUT
CONNECTING
NUT
SPRING
ROD
WASHER
WASIIER
CLOTII
THRUST
RUBBER
PULLEY
SCREW
SPRING
SPINNER
SCREW
NUT
WASHER
SEAL
SCREW
SIDE
NIJT
ROLLER
WORK
UPPER & LOWER
SCREW
SCREW
OSCILLATING
SPACER
SPINNER
OIL
LINK
HOLDING
SCREW
SPRING
TENSION
ROLLER
NUT

SCREW
STOPPER
STOPPER
CLAMP
NUT
SCREW
TENSION

SPRING

WORK
WORK
ROTATING
ROTATING

LEAF
SCREW
CLAMP
SCREW
COVER
SCREW

ARM

SPINNER
BUTTON
BUTTON
BUTTON
BUTTON

SCREW

BASE

SCREW

TAPERED
SCREW
CAM

D E S C R I P T I 0 N

END

1

END

NUT,

LEFT

H6

ROD

H4

WASHER,

END

2

H4

4.5X8X0.5

6.1XllX2

PLATE

WASHER

SUPPORT

PLATE
RING
ASH.,

3/16-28

SHALL

L=9

WASHER.

M4

OSCILLATING

1/4-40

L=5

9/64-40

FOR

NEEDLE

1/4-40

BEARING

L=8

COVER 1 ASH.

CLAMP

FOOT

LIFTING HOOK

ARM
15/64-28
15/64-28

L=20.5
L=15.5

LEVER

SUPPORT

ARM

WICK

SUPPORT

15/64-28

SHAFT

CLAMP

DRIVE

L=20.5

HOOK

SPRING

STUD

BRACKET

11/64-40

11/64-40

L=24
PLATE
ASH

.

RELEASE

ARM

ASH.

1/8-44

1/8-44

L=18.0

SPRING

PIN

CLAMP

ATTACHMENT

CLAMP

ATTACHMENT
ROD
ROD

SPRING

BRACKET

3/16-32
RELEASE
1/4-40

1/8-44

ARM

L=7
L=4.3

L=6

ASH.

SHAFT

OSCILLATING

CARRIER

CARRIER
CARRIER
CARRIER

9/64-40

ASH.
ASH.
ASH.

ASH

L=5

.

CASTING

15/64-28

L=20.5

PIN

M6

L=15

ROLLER

SHAFT

ARM

PIN

ARM

A

ASH.

B

ARM

LEVER

ASH.

ASH.

ASM.

n•H

·1~~ • pJ•H*~·

D~~·l~~·

D7~·l~~·-t~~

D~:IJ?t~~

~~~~·Jn•H

D7:1J?t7~

11·*11·:1J·*

D7~·l~~·

~7f·:IJ·*

~711·:1J·*

«J.Jt•-t

~7::H~~1t

01}~?·

1°-1)

D7:1J?t.·~~

11·*-,·:IJ·*

t~:IJ1

ASM.

~~*~

o•J:IJ?t~

3:J:f?IJ~T·

=-~·~~-1~~?·3-

~~*~

1Jt•-t

M6

M4X0.7

M4

4.5X8X0.5

6.1X11X2

,.

(~3-)

3/16-28
M4

1-J.J,J\

..

1/4-40

~

9/64-40

,.:IJ

..

1/4-40

:IJ•’J-tt

2~:t

?~

..

..

1

D-7

:;tJ:tHr~·

;,tJHl

D7:1J?t.·~~

D7:1J?t.·~~

~3-~:1-1-J.

~~0-·-

t~:IJ-{1-J.

:1~~

«J.1Hl1J~?

«J.J:tn

D~:IJ?t.·~~

~70

t·1·u~.

J\1)~·3-

D~:b?t•J~

~~~7*~·

:IJJ.

~~711°-

?7~7°

u•J:IJ?t·J~

~7*~·

~~11ol}11•*

~7o1J~?·~o~

‘1-?

‘1-?1t~f~~~

:IJ17~D~~·

:IJ17~D7~

1tJI

~~*~·

?7~7°:1J1~·37-J.

D~:IJ?t.·~~

;t.•t~:tf t.•-~:IJII•-

D7:1J?;J;

1-J.~·?

t~:b11-J.

;~;·t~~’\1

;t;•t~H1JY B ?~

;t;·t~~’\1

t.·t~~’\1

~~f7*~·

:llt•-t

D7:11?;t.·~~

7-11°

D~:IJ?1t;t;·,~

D-7

7~?

~·3-~·1-1.

15/64-28
15/64-28

t~:IJ-{1!11·-

~~·t·~,~~o~ ?~

~~·~·?

?~·-1-1.

15/64-28

1)~?·7~?

u·~11·*

:ID~·?’)~

11/64-40
11/64-40

~~711°—ft

?~

:IJ1~·31-J.

118-44

1/8-44

1t·Jt~~~

..

*’)~

?~

3/16-32

1/4-40

..

~~

1/8-44

?~

1

11 A ?~

1

JY c ?~

1

JY D ?~

9/64-40

~t~·-~

15/64-28

~o

~

4X20

M6

~I)•J~~·?

~t·~

1~:1

L=9

?~

L=5

* B

~-~

L=8

?~

?~

L=24

A

?

L=l8

L=6

B

?~

L=7
L=4.3

L=5

L=15

~

AMT.

3

1

2

2

1

1

1

2

1

1

2

1
1

1

4

2
1

6

3

2

1

2

1

1

1

1

1

1
1
1

1

1

(0.

1)

1

1

(1)

1
1

1

2

1
1

1
1

2
2

1

1

1

1
1

1
1

(2)

1

2
1

1

1
1
1

1
1

1

2
1

5
4
4

1

Note ()i:

ft

e)

#01 ….. Selecting
#02

….. Special

(Small

part

order

button)

part

iJltRM.ff,

~ii.M.ff,(‘l’*:il

;..-If!)

-6-

4.

From the library of: Superior Sewing Machine & Supply LLC

SPINNER

2

COMPONENTS

to@

-24

-~

I B

17 16

I p 0 /

27

0

I

26

-7-

Loading…

Adjustment Procedures

™ Turn the hand wheel by hand and loosen

screw 1 in the Fig. A in the thread take-

up lever to adjust so that the upper

engraved line of the two engraved lines

on the needle bar aligns with the bottom

of lower bushing 3 when the needle bar

is at its lowest position.

For the old type sewing machine, in

addition, adjust the position so that

needle clamp screw 4 enters the slot of

lower bushing 3 as illustrated in Fig. B

when the needle bar is at its highest

position.

Following needles are equipped at the

time of delivery.

MB-373 : Standard needle TQ x 7 #16

MB-377 : Standard needle TQ x 1 #16

MB-377 / Z201 : TQ x 7 #20

MB-377 / Z202 : TQ x 7 #18

1) Adjusting the looper timing

7

™ Loosen two screws 5 in the looper and cam sleeve and

adjust in the rotating direction of the looper and cam sleeve

so that the looper’s blade point aligns with the center of

the needle when the lower engraved line of the needle

bar is aligned with the bottom of the lower bushing. Then

tighten the screws.

2) Clearance between the needle and looper

Loosen two screws 7 in the looper suppot ring and adjust

in the longitudinal position of the looper when the looper’s

blade point is aligned with the center of the needle. Then

tighten the screws.

3) Clearance between the needle guide and needle

Loosen screw 8 in the needle guide and adjust in the

longitudinal position of the needle guide so that the clearance

between needle guide 6 and needle should become 0 to

0.1 mm when the needle bar is at its lowest position.

1

2

3

Fig. B

3

5

3

− 

Results of Improper Adjustment

™ If needle bar 2 is too high, skipped

Fig. A

stitches will be produced.

If the needle bar is too low, the

needle will come in contact with the

looper.

4

4

™ If the clearance between the needle

and looper is too excessive, it is

likely to produce skipped stitches.

If the clearance is too small, in

accordance with the material used,

the needle will come in contact with

the looper resulting in needle

breakage and looper’s blade point

breakage.

™ For thick materials and overlapped

sections, adjust the clearance

between the needle guide and

needle so that the needle guide

touches the needle by 0.1 to 0.2

mm.

1. SPECIFICATIONS

MB-373

MB-377

Other specifications are same as those of MB-373.

−1 −1

1

2

3

4

5

6

7

8

9

10

11

Sewing speed

Number of stitches

Amount of feed

Stitching pattern

Button size

Needle bar stroke

Needle

Automatic thread trimmer

Presser lifter

Stop-motion unit

Power supply

Max. 1,500 rpm Normal speed 1,300 rpm

8, 16, and 32 stitches

(6, 12 and 24 stitches are also possible by changing the cam.)

Crosswise feed 2.5 to 6.5 mm

Lengthwise feed 0, 2.5 to 6.5 mm

-shape, Z-shape, Π -shape, and X-shape

10 to 28 ø mm

48.6 mm

TQ x 7 #16 (#14 to #20)

Interlocked with the presser lifter.

Consists of a fixed knife and a moving knife.

Automatically operated (Pedal-system is also available.)

Automatically operated (equipped with speed slowing device)

200 W (1/4 HP) single- or three-phase

1

2

Stitching pattern

Needle

-shape, Z-shape, and X-shape

TQ x 1 #16 (In case of attachments for medium button (Z202) and

large button (Z201) TQ x 7 #16, #14 to #20)

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