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WHAT TO DO
PROBLEM PROBABLE CAUSE CORRECTION
Irregular
Stitches
Breaking
Needles
Bunching of
Thread
Puckering
36
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_,
Rethreod 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 _page 11_.
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 ('page 11_.
Draw both threads back under presser foot _poge 10_.
Raise feed dog (page 10_.
Reset thread tension s_ (,pcges 12, 13_.
Increase pressure on presser foot _pcge 10_,.
Upper threcd and bobbin thread should be same size and kind.
Insert new needle ('page 5_.
Reset presser foot _page 11_.
Use underlay oF tissue paper or tarleton when stitching.
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