Backlash Between Hook Gear And Lower Shaft Gear - ELNA Elnita ec 30 Service Manual

BACKLASH BETWEEN HOOK GEAR AND LOWER SHAFT GEAR

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.
Setscrew
MECHANICAL ADJUSTMENT
Needle plate
Bobbin holder
Span of feed dogs
Setscrew A
Notch
C
B
Lower shaft bushing
14
Hook point
0.8 mm or less