Brother HE-800B Service Manual page 62

6. ASSEMBLY
1. Lower thread trimming cam
connecting rod
2. Driving lever roller
3. Shoulder screw
4. Lower thread trimmer cam
5. Lever shaft
6. Set screw
7. Roller shaft
8. Nut
9. Roller
10. Retaining ring
11. Lower thread trimmer cam
lever
12. Cam shaft, ;L-TR
13. Washer
14. Retaining ring
15. Set screw
16. Cover
17. Lower thread trimmer link
18. Shoulder screw
19. Shoulder screw
20. Screw
21. Opening plate, B
22. Screw
23. Shoulder screw
24. Roller
25. Roller shaft
A
Press down
Forward
Needle
Move the base plate (55) so that the needle is exactly in
the middle of the needle hole in the needle plate (53) in
the forward and back directions, and then tighten the four
screws (56).
C
Bobbin case
53
26. Opening plate, A
27. Shoulder screw
28. Spring
29. Screw
30. Lever assembly
31. Collar
32. Lower thread retainer
33. Screws [2 pcs]
34. Screw
35. Knife driving lever
36. Collar
37. Plain washer D
38. Plain washer U
39. Shoulder screw
40. Lower
assembly
41. Washer
42. Plain washer
43. Shoulder screw, SM3.18
44. Lower thread presser
45. Shoulder screw
46. Screw
47. Lower fixed knife assy
48. Movable knife assy
49. Washer
50. Plain washer
Back
Needle hole
0670D
0671D
thread clamp plate
B
Approx.12.5 mm
0672D
Turn on the power, and after the sewing machine returns
to the home position, turn the screw (59) and the nut (60)
to adjust so that the clearance between the bobbin presser
(61) and the edge of the bed is approximately 12.5 mm.
Install so that the end of the bobbin presser (61) is at the
center of the bobbin case.
HE-800B
51. Bind
52. Bind
53. Needle plate
54. Flat screws [2 pcs]
55. Base plate
56. Screws [4 pcs]
57. Spring hook U
58. Bobbin presser bracket
59. Screw
60. Nut
61. Bobbin presser
62. Screw
63. Auxiliary plate
64. Opening plate
65. Shoulder screw
66. Shoulder screw
67. Shoulder screw
68. Shoulder screw
69. Spring [2 pcs]
a. Lower thread trimmer link assy
A
b. Lower thread connecting rod A
c. Screws [2 pcs]
d. Needle plate cover
e. Base plate