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What to Do When (Continued)
SECTION 4. PERFORMANCE PROBLEMS CHART
PROBLEM PROBABLE CAUSE
Incorrect size needle.
Improper threading.
Looseupper thread tension.
Irregular Stitches Pulling fabric.
Loose pr_
Unevenly wound bobbin.
Nicks or burrsat hole of needle plate.
Pulling fabric.
Incorrect size needle.
Breaking Needle
Incorrect setting of needle.
Loose presser foot.
Upper and lower threads not drawn back
Bunching of Thread under presser foot before starting seam.
Incorrect thread tension(s).
Using two different sizesor kinds of thread.
CORRECTION
Choose correct size needle for thread and fabric.
Rethread machine.
Tighten upper thread tension.
Do not pull fabric; guide it gently.
RA_Rt pr_Ar fnnt
Rewind bobbin
needle plate, or polish off burrs completely.
Do not pull fabric; guide it gently.
Choose correct size needle for thread and fabric.
Reset needle.
Reset presser foot,
When starting a seam be sure to draw both threads under and
back of presser foot about 4" and hold until a few stitchs are
formed.
Reset thread tension(s).
Upper thread and bobbin thread should be same size and kind.
Puckering Bent or blunt needle. , 1 Insert new needle.
Fabric very sheer or very soft. Use underlay of tissue paper.
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