Sears 385.12514 User Manual
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SECTION 4. PERFORMANCE PROBLEMS CHART
What to Do When
PROBLiM
PROBABLE CAUSE
CORRECTION
Skipping Stitches
Incorrect size needle.
Bent or blunt needle,
incorrect setting ol needle.
Tight upper thread tension.
Choose correct size needle tor thread and tabric.
Insert new needle.
Reset needle.
Loosen upper thread tension.
Breaking Upper Thread
Starting to stitch too tast.
improper threading.
Tight upper thread tension,
incorrect size needle.
Sharp eye in needle,
Nicks or burrs on shuttle.
Nicks or burrs at hole ot needle plate.
Start to stitch at a medium speed.
Rethread machine.
Loosen upper thread tension.
Choose correct size needle tor thread and tabric.
Insert new needle.
Replace shuttle, or polish otf burn completely.
Replace needle plate, or polish off burrs completely.
Breaking Bobbin Thread
Improper bobbin case threading.
Lint in bobbin case or shuttle.
Check bobbin case threading.
Clean bobbin case and shuttle.
Fabric not Moving
Darning plate in place.
Stitch Length set at 0,
Thread knotted under fabric.
Remove darning plate.
Adjust Stitch Length Control.
Place both threads back under presser foot betöre beginning
to stitch.
Machine Jamming Knocking Noise
Thread caught in shuttle.
Lint in bobbin case or shuttle.
Disassemble and dean shuttle.
Clean bobbin case and shuttle.
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