5. PERFORMANCE CHECKLIST
GENERAL PROBLEMS
Machine does not sew.
*Power switch is turned off.- Turn on the switch. Machine iams/knocks.
*Thread is caught in hook.- Clean hook (see page 62 - 63).
*Needle is damaged.- Replace needle (see page 24 - 25). Fabric does not move.
*Presser foot is not lowered - lower presser foot.
STITCHING PROBLEMS
Machine skips stitches.
*Needle is not all the way up into needle clamp. - See page 24 - 25.
*Needle is bent or blunt. - Replace needle (see page 24 - 25).
*Machine is not threaded correctly. - See page 18 - 19.
*Thread is caught in hook. - Clean hook (see page 62 - 63). Stitches are irreqular.
*Needle size is not correct for thread and fabric. - See page 24
*Machine is not threaded correctly. - See page 18 - 19.
*Top thread tension is too loose. - See page 26 - 27.
*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 24
*Needle is not all the way up into the needle clamp. - See page 24 - 25.
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 4 inches (10 cm) and hold until a few stitches are formed.
Needle thread breaks.
*Machine is not threaded correctly. - See page 18 - 19.
*Top thread tension is too tight. - See page 26 - 27.
*Needle is bent. - Replace needle (see page 24 - 25).
*Needle size is not correct for thread and fabric - See page 24
Bobbin thread breaks.
*Bobbin case is not threaded correctly.- See page 16 - 17.
*Lint accumulates in bobbin case or hook. - Remove lint
(see page 62 - 63). Fabric puckers.
*Top thread tension is too tight. - Adjust thread tension (see page 26 - 27).
*Stitch length is too long for sheer or soft fabric. - Shorten stitch length.
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