User manual

4. PERFORMANCE CHECKLIST
GENERAL PROBLEMS
M
achine does not sew.
*
P
ower switch is turned off. - Turn on the switch.
*
B
uttonhole lever is not raised when sewing stitch patterns. – Raise buttonhole lever.
* Buttonhole lever is not lowered when sewing buttonhole. – Lower buttonhole lever.
*
B
obbin winder is engaged. – Disengage bobbin winder (see page 5).
Machine jams/knocks.
* Thread is caught in hook. - Clean hook (see page 32).
*
N
eedle is damaged. - Replace needle (see page 10).
Fabric does not move.
*
Presser foot is not lowered - Lower presser foot.
* Stitch length is too short - Lengthen stitch length.
STITCHING PROBLEMS
M
achine skips stitches.
*
N
eedle is not all the way up into needle clamp (see page 10).
*
N
eedle is bent or blunt. - Replace needle (see page 10).
* Machine is not threaded correctly (see page 7).
* Thread is caught in hook. - Clean hook (see page 32).
Stitches are irregular.
*
N
eedle size is not correct for thread and fabric (see page 10).
* Machine is not threaded correctly (see page 7).
* Top thread tension is too loose (see page 11).
*
F
abric is being pulled or pushed against machine feeding action. - Guide it gently.
* Bobbin has not been wound evenly. - Rewind bobbin.
Needle breaks.
*
F
abric is being pulled or pushed against machine feeding action. - Guide it gently.
*
N
eedle size is not correct for thread and fabric (see page 10).
* Needle is not all the way up into the needle clamp (see page 10).
* Twin needle is being used but stitch width is set too wide (see page 30).
*
T
oo much thread appears on the underside of stitching.
*
U
pper thread is not correctly thread (see page 7).
THREAD PROBLEMS
T
hread 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.
*
M
achine is not threaded correctly (see page 7 ).
* Top thread tension is too tight (see page 11).
* Needle is bent. - Replace needle (see page 10).
*
N
eedle size is not correct for thread and fabric (see page 10).
Bobbin thread breaks.
*
B
obbin case is not threaded correctly (see page 6).
*
Li
nt accumulates in bobbin case or hook. - Remove lint (see page 32).
Fabric puckers.
* Top thread tension is too tight. - Adjust thread tension (see page 11).
* Stitch length is too long for sheer or soft fabric. - Shorten stitch length.
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