What to do when (continued) – Sears 385.12514 User Manual

Page 39

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What to Do When (Continued)

SECTION 4. PERFORMANCE PROBLEMS CHART

problem

PROBABLE CAUSE

CORRECTION

Irregular Stitches

Incorrect size needle. ‘
Improper threading.
Loose upper thread tension.
Pulling tabric.
Loose presser foot.
Unevenly wound bobbin.

Nicks or burrs at hole o! needle plate.

Choose Correct size needle tor thread and tabric.

Rethread machine.

Tighten upper thread tension.

Do not pull fabric; guide it gently.
Reset presser toot.
Rewind bobbin.
Replace needle plate, or polish off burrs completely.

Breaking Needle

Pulling tabric.
Incorrect Size needle.
Incorrect setting of needle.
Loose presser foot.

Do not pull fabric: guide it gently.
Choose correct size needle for thread and tabric.
Reset needle.
Reset presser toot.

Bunching of Thread

Upper and lower threads not drawn back
under presser toot before starting seam.

When starting a seam be sure to draw both threads under and
back of presser foot about 4" and hold until a tew stitchs are
termed.

Puckering

Incorrect thread tension (s).
Using two different sizes or kinds ot thread.
Bent or blunt needle.
Loose presser toot.

Fabric very sheer or very soft.

Resetthread tension (s).
Upper thread and bobbin thread should be same size and kind.
Insert new needle.
Reset presser foot.
Use underlay of tissue paper.