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9. Needle timing to shuttle hook
Check “Feed timing (vertical movement)” and “Needle height” beforehand.
Checking
1. Select widest zigzag stitch.
2. Remove needle plate. Check to see if needle is not bent.
3. Move needle to left position by turning hand wheel. Raise needle from its lowest
position slowly and check if distance is as illustrated below when point of shuttle
hook aligns with right side of needle.
Adjustment
1. Remove front cover. Loosen two screws (A & B) on gear and adjust position
of gear as illustrated below.
With one screw tightened temporarily, check to see if the distance is as illustrated
above. Adjust it by turning main shaft with hand wheel, with screws loosened and
hex driver inserted into one of the screws.
0.5 to 1.2
Needle plate
Shuttle race
point of shuttle hook
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