28
104 72 47-26
A
C
B
0,5 mm
Fig 1
15. The height of the hook
Is checked between the bobbin case and the case holder
Check
The distance between the bobbin case and the case holder should
be 0.5
+ 0.1
-0,05
mm.
The check is carried out at the tightest spot between the bobbin case and the case
holder. Check at the two marked positions according to fig. 1.
Adjustment
1. Loosen screw (A).
2. The gap between the hook and its cover can now be adjusted by turning the stud (C)
right or left.
- To the right, the gap becomes larger.
- To the left, the gap becomes smaller..
3. When the adjustment is done. Remove stitch plate, bobbin case holder and bobbin case.
4. Push the hook shaft (B)downwards and tighten the screw (A).
5. Re-check.
Note!
This setting affects:
1. The play of the hook gear.
9. The timing of the hook and the needle
10. The needle height
Check with distance gauge 412 38 85-01.
Settings
