6. PERFORMANCE CHECKLIST
GENERAL PROBLEMS
Machine does not sew
* Power switch is turned off.- Turn on the switch.
* Buttonhole lever is not raised when sewing stitch patterns.
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Raise buttonhole lever.
* Buttonhole lever is not lowered when sewing buttonhole.
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Lower buttonhole lever.
* Bobbin winder is engaged.
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Disengage bobbin winder (see page 11).
Machine jams/knocks
* Thread is caught in hook.- Clean hook (see page 47).
* Needle is damaged.- Replace needle (see page 17).
Fabric does not move
* Presser foot is not lowered - Lower presser foot.
* Stitch length is too short - Lengthen stitch length.
STITCHING PROBLEMS
Machine skips stitches.
* Needle is not all the way up into needle clamp (see page 17).
* Needle is bent or blunt. - Replace needle (see page 17).
* Machine is not threaded correctly (see page 13-14).
* Thread is caught in hook. - Clean hook (see page 47).
Stitches are irregular.
* Needle size is not correct for thread and fabric (see page 16).
* Machine is not threaded correctly (see page 13-14).
* Top thread tension is too loose (see page 18).
* Fabric is being pulled or pushed against machine feeding action. - Guide it gently.
* Bobbin has not been wound evenly. - Rewind bobbin.
Needle breaks.
* Fabric is being pulled or pushed against machine feeding action. - Guide it gently.
* Needle size is not correct for thread and fabric (see page 16).
* Needle is not all the way up into the needle clamp (see page 17).
* Twin needle is being used but stitch width is set too wide (see page 48).
* Too much thread appears on the underside of stitching.
* Upper thread not correctly thread (see page 13-14).
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