5. 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.
– Raise buttonhole lever.
*Buttonhole lever is not lowered when sewing buttonhole.
– Lower buttonhole lever.
*Bobbin winder is engaged.
– Disengage bobbin winder (see page 15).
Machine jams/knocks.
*Thread is caught in hook.
-Clean hook (see page 56 - 57).
*Needle is damaged.
-Replace needle (see page 23).
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 23).
* Needle is bent or blunt.
- Replace needle (see page 23).
*Machine is not threaded correctly (see page 17
*Thread is caught in hook.
-Clean hook (see page 56 - 57).
Stitches are irregular.
* Needle size is not correct for thread and fabric (see page 23). * Machine is not threaded correctly (see page 17 - 18).
* Top thread tension is too loose (see page 24 - 25).
*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 23).
*Needle is not all the way up into the needle clamp (see page 23).
* Too much thread appears on the underside of stitching.
*Upper thread not correctly thread (see page 17 - 18 ).
THREAD PROBLEMS
Thread bunches.
*Top and bobbin threads are not drawn back under presser foot before starting seam.
-Draw both threads back under presser foot about 6 inches (10 cm) and hold until a few stitches are formed.
Needle thread breaks.
* Machine is not threaded correctly (see page 17 - 18). * Top thread tension is too tight (see page 24 - 25).
*Needle is bent. - Replace needle (see page 23).
*Needle size is not correct for thread and fabric (see page 21 - 22).
Bobbin thread breaks.
*Bobbin case is not threaded correctly (see page 16 - 17).
*Lint accumulates in bobbin case or hook.
-Remove lint (see page 56 - 57).
Fabric puckers.
*Top thread tension is too tight.
-Adjust thread tension (see page 24 - 25).
*Stitch length is too long for sheer or soft fabric.
-Shorten stitch ngth.
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