Brother rh-918a Sewing Machine User Manual


 
9. STANDARD ADJUSTMENTS
RH-981A
61
9-10. Changing the knife cutting length (Replacing the hammer)
1. Grind or replace the hammer after changing the knife cutting length.
2. Loosen the screw (1), and then remove the hammer (2).
Because the knife cutting length is set in accordance with the length of the hammer, grind the hammer as shown
in (A) in the above illustration.
Hammer length A = Knife cutting length + 1.5 mm
3. When installing the hammer, push in the pin (3) and then tighten the screw (1).
* Do not use knives with different numbers on the same hammer. If knives with different numbers are used,
accurate cutting will not be possible and the knife will be damaged.
3089Q
0970Q
Illustration (A)