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WHATTO
PROBLEM PROBABLE CAUSE CORRECTION
Skipping
Stitches
Breaking Upper
Thread
Breaking Bobbin
Thread
tncorrect size needle,
Bent or blunt needle.
Incorrect setting of needle.
Tight upper thread tension.
Light pressure on presser foot.
Choose correct size needle for thread and fabric (page 5).
Insert new needle (page 5).
Reset needle (page 5).
Loosen upper thread tension (page 12L
Increase pressure on presser foot (page 10).
Starting to stitch too fast.
Improper threading.
Tight upper thread tension.
Incorrect size needle.
Sharp eye in needle.
Start to stitch at a medium speed.
Rethread machine (page 9).
Loosen upper thread tension (page 12).
Choose correct size needle for thread and fabric (page 5).
Insert new needle (page 5).
Improper bobbin case threading. Check bobbin case threading (page 8).
Tight bobbin thread tension_ Loosen bobbin thread tensEon (page 13).
Lint in bobbin case or shuttle. Clean bobbin case and shuttle (page 22 & 23).
Fabric not
Movi ng
Machine Jamming
(Knocking Noise)
Feed dog down.
Light pressure on presser foot.
Threads kno-.ted under fabric.
Raise feed dog.
Increase pressure on presser foot {page 10).
Place both threads back under presser foot before beginning to stitch.
Thread caught m shuttle.
Disassemble and clean shuttle (page 22 & 23).
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