14
The rotary play of the hook point should be 0.8 mm or less when it is in between the span of the feed dog teeth,
and the gears should turn smoothly.
1. Remove the needle plate and bobbin holder.
2. Remove the bed cover (Refer to page 5).
3. Loosen the setscrew A.
* If the rotary play is too large, turn the lower shaft bussing in the direction of B.
* If the rotary play is too small, turn the lower shaft bussing in the direction of C.
4. Tighten the setscrew A.
5. Attach the front cover.
6. Attach the bobbin holder and needle plate.
BACKLASH BETWEEN HOOK GEAR AND LOWER SHAFT GEAR
MECHANICAL ADJUSTMENT
B
C
Needle plate
Span of feed dogs
Hook point
0.8 mm or less
Setscrew A
Notch
Lower shaft bushing
Setscrew
Bobbin holder
