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Brother HE-800B Service Manual Page 74

Electronic direct drive lockstitch button holer.
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6. ASSEMBLY
1. Cutter driving arm shaft
2. Set screw collar
3. Cutter driving arm assembly
4. Set screws [2 pcs]
5. Set screw
6. Cutter bar guide [2 pcs]
7. Screws [4 pcs] (Temporarily
tighten)
8. Cutter driving link
9. Needle bar guide slide block
10. Cutter driving shaft holder
11. Set screw
12. Screws [4 pcs] (Fully tighten)
13. Stopper cushion
14. Nut
15. Solenoid stopper
16. Spring washer
17. Nut
18. Cutter solenoid
19. Cutter solenoid bracket
20. Bolts [3 pcs]
A
C
65
21. Slide block
22. Washer
23. Retaining ring
24. Cutter link bracket
25. Bolt (Temporarily tighten)
26. Screws [4 pcs] (Temporarily
tighten)
27. Bolt (Fully tighten)
28. Screws [4 pcs] (Fully tighten)
29. Cutter driving shaft
30. Felt
31. Cutter driving shaft holder
32. Oil rejector
33. Set screws [2 pcs]
(Temporarily tighten)
34. Adjusting screw assembly
35. Nut
36. Cutter holder DM
37. Screws [2 pcs]
38. Cutter holder M
39. Bolts [2 pcs]
40. Cutter holder
B
Oil tube
Insert the oil tube and the cord of the cutter solenoid (19) in
between tube support U and the arm.
0685D
Tighten the two set screws (33) so that the distance A
between the processed surface of the arm and the end of
the cutter driving shaft (29) is 24.5 mm when the cutter
solenoid (18) is at the stroke end (when the solenoid
stopper (15) is touching the stopper cushion (13)).
* Lift up the cutter driving shaft by hand at this time and
check that it moves by its own weight. If it does
not move, loosen the socket bolt (27) and the screw (28)
and readjust the cutter driving shaft so that it moves
easily.
0689D
HE-800B
41. Bolt
42. Cutter
43. Screw
44. Spring
45. Cutter sensor
46. Screw
47. Cutter sensor setting plate
48. Screw
a.
Pin, dowel
b.
Pin
c.
Set screw
d.
Cutter driving arm
e.
Cutter driving link shaft
f.
Cutter driving shaft holder
g.
Adjusting screw
h.
Cushion spring
i.
Cushion support
j.
Shoulder screw
Tube support U
Insert
Oil tube
0686D

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