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WHAT TO DO
PROBLEM PROBABLE CAUSE CORRECTION
Irregular
Stitches
Breaking
Needle
Bunching of
Thread
Puckering
24
Incorrect size needle.
Improper threading.
Loose upper thread tension.
Pulling fabric.
Light pressure on presser foot.
Loose presser foot.
Unevenly wound bobbin.
Pulling fabric.
Incorrect size needle.
Incorrect setting of needle.
Loose presser foot.
Upper and lower threads not
drawn back under presser foot.
Feed dog down.
Incorrect thread tension(s).
Light pressure on presser foot.
Using two different sizes or
kinds of thread.
Bent or blunt needle.
Loose presser foot.
Fabric too sheer or too soft.
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).
Do not pull fabric; guide it gently.
Choose correct size needle for thread and fabric (page 5).
Reset needle (page 5).
Reset presser foot.
Draw both threads back under presser foot (page 10).
Raise feed dog.
Reset thread tension(s) (pages 12, 13).
Increase pressure on presser foot (page 10).
Upper thread and bobbin thread should be same size and
kind.
Insert new needle (page 5)
Reset presser foot.
Use underlay of tissue paper or tarleton when stitching.
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