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Kenmore 385.11607 User Manual

Page 38

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SECTION 4. PERFORMANCE PROBLEMS CHART

What to Do When

PROBLEM

PROBABLE CAUSE

CORRECTION

Skipping Stitches

Incorrect size needle.

Bent or blunt needle.

Incorrect setting of needle.

Tight upper thread tension.

Choose correct size needle for thread and fabric.

Insert new needle.

Reset needle.

Loosen upper thread tension.

Breaking Upper Thread

Starting to stitch too fast.

Improper threading.

Tight upper thread tension.

Incorrect size needle.

Sharp eye in needle.

Nicks or burrs on shuttle.

Nicks or burrs at hole of needle plate.

Start to stitch at a medium speed.

Rethread machine.

Loosen upper thread tension.

Choose correct size needle for thread and fabric.

Insert new needle.

Replace shuttle, or polish off burrs 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 before beginning

to stitch.

Machine Jamming Knocking Noise

Thread caught in shuttle.

Lint in bobbin case or shuttle.

Disassemble and clean shuttle.

Clean bobbin case and shuttle.

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