TROUBLE SHOOTING
Trouble Cause Remedy
Breaking needle 1. Needle touches plate.
2. Needle is bent or blunt.
3. Needle touches shuttle hook.
4. Machine feeds while needle is in
fabric or zigzag timing is not
correct.
5. Fabric is pulled while sewing.
Adjust the needle drop see
page 11.
Replace with a new needle.
Adjust the clearance between
needle and shuttle hook see
page 15.
Adjust the zigzag timing see
page 10.
Do not pull the fabric while
sewing.
Machine is noisy 1. Backlash between lower shaft
and hook driver gears is not
appropriate.
2. Too much play on lower shaft
3. Motor belt tension is too tight.
4. Too much upper shaft play.
5. Lack of oil.
Adjust the backlash see page
15
Reduce the play.
Adjust the motor belt tension
see page 26.
Reduce the upper shaft play.
Apply a few drops of oil on all
moving parts.
Distorted stitch
pattern.
1. Zigzag timing is not appropriate.
2. Cam follower is not released
enough.
3. Needle thread tension is too tight.
4. Stretch stitch feed is not
balanced.
Adjust the zigzag timing see
page 10.
Adjust the cam follower see
page 22.
Adjust the needle thread
tension see page 7.
Adjust the balance see page
20.
3
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