9. STANDARD ADJUSTMENT
9-10. Adjusting the holding pressure (BE-438F)
Loosen the nut (1) and turn the nut (2) to the point where it is just tight enough that the material will not slip out of place when it is slightly pulled (keep pressure as slight as possible).
2387B
9-11. Adjusting the position of the button clamp (BE-438F)
1. Loosen the two bolts (1) and adjust the button clamp base (2) by moving it.
2. Carry out test feeding to check that the needle will go through the button hole with no contact.
2388B
9-12. Adjusting the thread wiper
<Thread wiper height adjustment>
Approx. 2 mm
2338B
Loosen the two screws (2) and adjust the thread wiper (1) so that the clearance between the top of the thread wiper (1) and the needle point is approximately 2 mm when the thread wiper (1) is aligned with the center of the needle.
Note:
Check that the needle bar thread guide (3) and the thread wiper base shaft (4) are not touching at this time.
2335B
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