39
Condition
Gathering
The machine doesnÕt
work.
Patterns are
distorted.
The automatic
buttonhole stitches
are not working.
Noisy operation.
Cause
1. The needle thread tension is too loose.
2. The needle is too heavy or light for the fabrics being sewn.
1. The machine is not plugged in.
2. A thread is caught in the hook race.
3. The bobbin winder spindle is still in the winding position.
1. The stitch is not balanced.
1. The stitch density is not suitable for the fabric being sewn.
2. Interfacing is not being used with stretch fabrics.
1. There is thread caught in the hook race.
2. Lint has built up in the bobbin holder or hook race.
Reference
Refer to page 15
Refer to page 8
Refer to page 5
Refer to page 37
Refer to page 10
Refer to page 32
Refer to page 25
Refer to page 23
Refer to page 37
Refer to page 37
Troubleshooting, contÕd
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