Brother International LS2-B837 Support Question
Brother International LS2-B837 Support Question
Find answers below for this question about Brother International LS2-B837.Need a Brother International LS2-B837 manual? We have 2 online manuals for this item!
Question posted by vperkovich on August 1st, 2013
Ratchet Spring
How do you put on a ratchet spring?
Current Answers
Related Brother International LS2-B837 Manual Pages
Parts Manual - English - Page 4
... Lever
1 156394-001 Control
I
4-2-13 Stud Screw 3.57
2 112712-001 Assembly
4-2-14 Tension Release Spring
I 118320-001 (for Thread
I
4-2-15 Upper Thread Tension Adjusting Nut
I 151012-001 Trimmer)
2 108263... Control
21
Thread Guide Disc (for Thread Trimmer) 2 44504-001
1 145153-001 Assembly
22
Spring (for Thread Trimmer)
I 58782-101
2 108265-001 (for Thread
23
Nut (for Thread ...
Parts Manual - English - Page 5
...18
14
15
Ref.
Machine body / Maschinengehause
Corps de la machine / Denominacion del mecanismo...
34
2
7
6
tr.
(05---29 0-28
1%--31
r
30
t--13
19 W-- 20 16 27 26
)-33
[1= -32
11
10
24
17 I 12 13 14 IS 16 17 18
Name of Parts Slide Plate Stopper Screw 4.37 Pressing Button (for Standard) Pressing Button (for Thread Trimmer) Spring...
Parts Manual - English - Page 8
...Assembly (for Standard) Presser Foot Lifter Screw Presser Bar Guide Sere 437-40x7 Presser Bar Guide Shaft Screw 5.95 x 6 Presser Plate Spring Stud Screw 6.35 Presser Adjusting Screw
Q'ty I 1 1 I I 1 1 I I 1 I I I I I
0 1...Bar Bracket Screw 357-40 x 8 Presser Bar Lifter Screw 476-32 x 20 Tension Release Spring Tension Release Plate Screw (for Thread Trimmer)
Screw 6.2 x 32
3
Parts No. 150923-...
Parts Manual - English - Page 9
... 14
Name of Parts Bell Crank Link Bell Crank Upper Feed Presser Link Upper Feed Presser Bar Adjusting Screw Presser Bar Presser Presser Bar Presser Spring Bell Crank Roller Stud Assembly Roller Stud Guide Plate Screw 4.76 Roller Stud Guide Screw 437-40 x 12 Wasker 4.37 Guide Plate Screw 437-40...
Parts Manual - English - Page 10
... of Parts Needle Plate (for Standard) Screw 4.37 Feed Dog (for Standard_) Screw 3.18 Presser Foot Screw 437-40 x 6 Walking Foot Screw 3.57 Needle Plate Spring Pin Feed Dog (for Standard) Feed Rock Shaft Bushing (Left) Screw 5.95 Feed Rock Shaft Feed Rock Shaft Collar Screw 6.35
Q'ty Parts No. 1 148493...
Parts Manual - English - Page 11
...Reverse Lever (for Thread Trimmer)
Screw 6.35 x 10 (for Standard)
Link (B)
Spring Hook
Screw 5.95 x 6 (for Standard)
Spring
Spring Hook Plate
Screw 476-32 x 8
Lever Feed Connecting Rod
Needle Bear ng
Level ...001
Screw 4.76
42747-002
Length Control Supporter
42746-002
Pin
45502-001
Notch Spring
00328-001
Feed Regular (for Standard)
48489-001
Feed Regulator (for Thread Trimmer)...
Parts Manual - English - Page 12
...Rock Lever
El 150980-001
Lever Stud Screw 4.37 Lever Spring Stud Screw 4.37 Link Ratchet Pin Ratchet Spring Collar (for Standard)
I 150981-001 I 151603-001
fl...
10- I 10- 2 11 12 13 14
IS
16
Screw 6.35
Spiral Gear Pinion Gear Screw 6.35 Screw 6.35 Screw 6.35 Screw 6.35 Rock Ratchet (for Standard) Rock Ratchet (for Thread Trimmer) Screw 6.35 x 12 (for Standard)
Q y I I I I 2 I 1 I I 3
I
I
I I 1 ...
Parts Manual - English - Page 13
K-7-1 Ouuer Rotaly Iloo" , ..HY
(1;sts4todi
(14 Thread Trinime,
S0 Rotary hook mechanism / Greifervorrichtung
Mecanisme du crochet rotatif / Mecanismo del cangrejo
E 24
25-"
7
1-I
5 23
4ILDflE)
7-2-8
7- 6 7-2 1
15 9 -9
ft -M41 - 8
19
20
CD
12
11
10
-18
17 T I -11
7-2- No. 1-1 1-2 2 3 4 5 6 7-1- 1
7-1-10
7-I 16
A 21-s
22
Ref. I
7-2- 6 7-2- 7 7-2- 8
Name of Parts Rotary Hook Base...
Parts Manual - English - Page 14
...-001
Screw 476-32 x 16 (for Thread Trimmer)
062711-612
Oil Gauge Window (for Thread Trimmer)
156388-000
Screw 3.57 (for Thread Trimmer)
156392-000
Spring
155485-001
Screw 476-32 x 16
062711-612
Washer
116662-003
Assembly No.
- 12-
Ref.
I 150989-000 I 112735-000 I 150995-000 I 114693-001 I 150996-000...
Parts Manual - English - Page 15
...
5 Cap for Oil Inlet 7 Oil Gauge Window
I 113526-001 I 150990-001
Oil Tube (for Standard)
40
Oil Tube (for Thread Trimmer)
I 51000-100 I 43661-000
9 Spring
I 150993-101
41
Wick 4 x 4 (16 cm)
I 51001-000
10 Oil Pendulum
I 150994-000
42
Oil Tube
1 48733-001
I I
Screw 357-40 x 6
I 062670-612
43
Wick...
Parts Manual - English - Page 16
...
I
5-3 Terminal Pin (for BROTHER Motor) 2
6
Screw 2.38
2
7
Actuator Pin
I
8
Screw 437-40 x 14
I
9
Stop Ring E8
10
Bushing
fl
11
Actuator Bar
O
12
Spring
1
13
Actuator Bar
I
14
Spring
I
15
Stop Ring E4
I
16
Button
1
Parts No. 156415-001 062680-812 146 I 20-002 062670-812
43549-000
Assembly No. P.
No. ez...
Parts Manual - English - Page 17
...
8
Fixed Knife (Right)
9 i Stud Screw 2.38
10
Thread Presser Plate
ll
Thread Presser
12
Thread Presser Spring
13
Stop Ring EI.5
14
Screw 3.18
15
Knife Driving Cam
16
Screw 6.35
I7
Screw 6.35 x 6...Screw 6.35 x 6 Knife Rock Lever (Right) Assembly Screw 476-32 x 14 Joint Assembly Screw Spring Hook (Right) Screw 476-32 x 10 Cord Supporter Screw 476-32x 18 Nylon Connector 12P Connector...
Parts Manual - English - Page 19
.... 12 20 21 31 32 36 40 41 42 43 44 45 46 47
Name of Parts
Q'ty
Reverse Lever
I
Reverse Lever (B)
I
Screw 6.35 x 10
I
Spring
I
Reverse Lever Shaft
1
Solenoid
1
Plunger
1
Stop Ring EIS
1
Rubber Stopper
1
Terminal Pin (for BROTHER Motor)
154731-00-0-
159902-001 EFKA Motor
143549-000 (1 54734-001...
Parts Manual - English - Page 20
... Nut 5 Cap Spool Holder 2 Bolt 5 x 28 Spool Shaft (B) Washer 2-5 Nut 5 Spool Stand Base Spool Mat Spool Cushion Spool Holder 2 Thread Hanger Thread Bushing Thread Guide Spring Bolt 5 x 28 Washer 5
Q'ty Parts No. Assembly No.
2 062680-812 Z-13
2 028680-242 Belt Cover
2 100666-002 Compleate (D)
2 025750-132 147908-001
I 147858-001
Assembly...
Instruction Manual - Page 9
Pedalbedienung
* Den Netzschalter der Nahmaschine einschalten und kontrollieren, ob die Lampe 0 leuchtet. Arrester immediatement le courant. Lightly depress the treadle 0 to position O , the machine runs at high sewing speed. 2.
RE Pedal 1.
Wenn das Pedal 0 in der richtigen Drehrichtung dreht. Den Netzschalter wieder ausschalten und sofort das Pedal etwas niederdrucken, um die ...
Instruction Manual - Page 11
... regulators loosen and only pre-tension 0 keeps the threads taut. Anti-racing spring
The Anti-racing spring 0 is loosened.
2. Das vom Nadelohr herausstehende Fadenende ist bei groRer Spannung ...
Cout
Largo
Corto
1'
•
0
Bobbin
Soule Canette Bobina
E Pre-tension, and Anti-racing Spring
1.
L'ouvrage est de nouveau entraine vers ('avant quand ce bouton est relache.
* La tele se...
Instruction Manual - Page 14
... and raise the presser foot.
(2) Remove screws 0 and remove cover 0. (3) Loosen screw 0, and remove the needle plate. (4)Tilt the head back. (5)Remove two knife return springs 0, and return the head to its original position. (6)Operate oscillating arm 0 until holed screws 0 are visible. (7) Remove holed screws 0, and remove moving knife 0. (8) Remove screws...
Instruction Manual - Page 20
...Improper needle and rotary hook timing. Improper thread take -up spring tension and stroke.
mentary instruction manual.
Threading Needle groove direction
...the feed dog.
Also, check the below.
Rotary hook point damaged.
Rotary hook lubrication. Thread take -up spring stroke and tension. ra Adjust the needle bar lift
stroke and height. Refer to the rotary hook assembly....
Instruction Manual - Page 21
...tension as weak as possible.
Adjust the needle bar lift stroke and height. Thread take -up spring stroke is too large.
Lower thread loop spreading does not match the rotary hook. Movable knife...mm. rAo Adjust the rotary hook and
needle plate gap to 0.05 mm. Thread take -up spring is too small.
With the tension release disengaged, adjust the
tension release lever and 14
presser bar...
Instruction Manual - Page 22
... -up stop position is too thick. Tension release movement. tion the rotary hook
8
rotates.
Trouble
Bobbin races during thread cutting. Needle up spring stroke is too weak. Upper thread from needle tip to 80% of sewing. Improperly polished knife hook. Replace the racing prevention spirng.
8
Refer to 1 mm. Decrease thread take -up...
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