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5. PERFORMANCE CHECKLIST
GENERAL PROBLEMS
Machine does not sew.
*Power switch is turned off.
-
Turn on the switch.
Machine jams/knocks.
*Thread is caught in hook.
-
Clean hook (see page 96 - 97).
*Needle is damaged.
-
Replace needle (see page 30 - 31).
Fabric does not move.
*Presser foot is not lowered
-
lower presser foot.
*Feed dog control is lowered (see page 16 - 17).
STITCHING PROBLEMS
Machine skips stitches.
*Needle is not all the way up into needle clamp.
-
See page 30
- 31.
*Needle is bent or blunt.
-
Replace needle (see page 30 -
31).
*Machine is not threaded correctly.
-
See page 28 - 29.
*Thread is caught in hook.
-
Clean hook (see page 96 - 97).
Stitches are irregular.
*Needle size is not correct for thread and fabric.
-
See page 30
- 31.
*Machine is not threaded correctly.
-
See page 28 - 29.
*Top thread tension is too loose.
-
See page 32 - 33.
*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 30
- 31.
*Needle is not all the way up into the needle clamp (See page 30
- 31).
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 28 - 29.
*Top thread tension is too tight.
-
See page 32 - 33.
*Needle is bent.
-
Replace needle (see page 30 - 31).
*Needle size is not correct for thread and fabric
-
See page 30
- 31.
Bobbin thread breaks.
*Bobbin case is not threaded correctly. See page 22 - 23.
*Lint accumulates in bobbin case or hook.
-
Remove lint
(see page 96 - 97).
Fabric puckers.
*Top thread tension is too tight.
-
Adjust thread tension
(see page 32 - 33).
*Stitch length is too long for sheer or soft fabric.
-
Shorten
stitch length.