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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.
Machine jams/knocks.
* Thread is caught in hook.
-
Clean hook (see page 80 - 81).
* Needle is damaged.
-
Replace needle (see page 24 - 25).
Fabric does not move.
* Presser foot is not lowered
-
Lower presser foot.
* Stitch length is too short - Lengthen stitch length.
* Feed dogs are lowered - Raise feed dogs.
Desired pattern cannot be selected.
* Twin needle mode switch has been turned on and lit red.
– Turn off the switch.
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 20 - 21.
* Thread is caught in hook.
-
Clean hook (see page 80 - 81).
Stitches are irregular.
* Needle size is not correct for thread and fabric.
-
See page
24 - 25.
* Machine is not threaded correctly.
-
See page 20 - 21.
* 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 - 25.
* 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 20 - 21.
* 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 - 25.
Bobbin thread breaks.
* Bobbin case is not threaded correctly.
-
See page 18 - 19.
* Lint accumulates in bobbin case or hook.
-
Remove lint
(see page 80 - 81).
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.
5. PERFORMANCE CHECKLIST
86


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