Sears KENMORE 385. 1254180 User Manual

Page 48

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SECTION 4. PERFORMANCE PROBLEIVIS CHART

What to Do When (Continued)

PROBLEM

PROBABLE CAUSE

CORRECTION

Skipping Stitches

Incorrect size needle.

Certain knits and synthetics.

Bent or blunt needle.
Incorrect setting of neadie.

Tight upper thread tension.

Choose correct size needle for thread and fabric.
Use "QNEEDLE'i.

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.

Rathread 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 m bobbin case or shuttle.

Disassemble and clean shuttle.
Clean bobbin case and shuttle.

46

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