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5. PERFORMANCE CHECKLIST
GENERAL PROBLEMS
* 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 14 - 15).
* Thread is caught in hook.- Clean hook (see page 60 - 61).
* Needle is damaged.- Replace needle (see page 22 - 23).
Fabric does not move.
* Presser foot is not lowered - Lower presser foot.
* Stitch length is too short - Lengthen stitch length.
* Darning plate is placed on needle place - Remove darning plate.
STITCHING PROBLEMS
* Needle is not all the way up into needle clamp. - See page
22 - 23.
* Needle is bent or blunt. - Replace needle (see page 22 -
23).
* Thread is caught in hook. - Clean hook (see page 60 - 61).
Stitches are irregular.
* Needle size is not correct for thread and fabric. - See page
22 - 23.
* 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
22 - 23.
* Needle is not all the way up into the needle clamp. - See page
22 - 23.
* Twin needle is being used but stitch width is set too wide.
- See page 62 - 63.
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.
* Top thread tension is too tight. - See page 24 - 25.
* Needle is bent. - Replace needle (see page 22 - 23).
* Needle size is not correct for thread and fabric - See page 22
- 23.
Bobbin thread breaks.
* Bobbin case is not threaded correctly. - See page 16 - 17.
* Lint accumulates in bobbin case or hook. - Remove lint
(see page 60 - 61).
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 length.
64
- See page 18 - 19.
- See page 18 - 19.
- See page 18 - 19.
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