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Irregular Stitches
PROBLEM
Breaking Needle
Bunching of Thread
Puckering
"PROBABLE CAUSE
Incorrect size needle.
Improper threading.
Loose upper thread tension.
Puilieg fabric.
Loose presser toot.
Unevenly wound bobbin.
Nicks or burrs at hole of needle plate.
Puiling fabric.
Incorrect s_ze needle.
_ncorrect setting of needle.
Loose presser foot.
Upper and lower threads not drawn back
under presser toot before starting seam.
Incorrect thread tension.
Using two different sizes or kinds of thread,
Bent or b_unt needle,
Loose presser foot.
Fabric too sheer or too soft.
CORRECTION
Choose correct size needle for thread and fabric.
Rethread machine.
Tighten upper thread tension.
Do not pull fabric; guide it gently,
Reset presser foot.
Rewind bobbin.
_Reptace needle plate, or polish off burrs completely.
Do not pull fabric; guide it gently.
Choose correct s_ze needle for thread and fabric.
Reset needle.
Reset presser toot.
When starting a seam be sure to draw both threads under and
back of presser foot about 4" and hold until a few stitches are
formed,
Reset thread tension.
Upper thread and bobbin thread should be same size and kind.
Insert new needle_
Reset presser foot.
Use underlay of tissue paper.
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