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WHATTO
PROBLEM PROBABLE CAUSE COR RECTION
trregular
Stitches
Breakmg
Needles
Bunching of
Th read
Incorrect s_ze needte.
Improper [breading,
Loose upper thread tension.
Pulling fabric.
Light pressure on presser toot.
Loose presser foot.
Unevenly wound bobbin,
Choose correct size needle for thread and fabric (page 5),
Rethread machine (page 9).
Tighten upper thread tension (page 12).
Do not pull fabric; guide it gently.
Increase pressure on presser foot (page 10).
Reset presser foot.
Rewind bobbin (page 7).
Pulling fabric.
Incorrect size needle.
Incorrect setting of needle,
Loose presser foot.
Do not puIl fabric; guide it gently.
Choose correct size needle for thread and fabric (page 5).
Reset needle (page 5).
Reset presser foot,
Upper and lower threads not
drawn back under presser fool
Feed dog down.
Draw both threads back under presser foot {page 10),
Raise feed dog.
24
Puckering
Incorrect thread tension{s).
Light pressure on presser foot.
Using two different sizes or kinds
of thread.
Bent or brunt needle.
Loose presser foot.
Fabric too sheer or too soft.
Reset thread tension {s) (page 12. 13).
increase pressure on presser foot (page 10).
Upper thread and bobbin thread should be same size and kind,
tnsert new needle (page 5),
Reset presser foot.
Use underlay of tissure paper or tarleton when stitching.
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