Sears 385.1884180 User Manual

Page 64

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SECTION 4, PERFORMANCE PROBLEMS CHART

! What to Do When {Continued)

PROBLEM

PROBABLE CAUSE

CORRECTION

Skipping Stitches

Incorrect size needfe.
Bent or blunt needle.

Incorrect setting of needle.

Tight upper thread tension.

Choose correct size needle tor 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 at hole of needle piate.

Start to stitch at a medium speed.

Rethread machine.
Loosen upper thread tension.

Choose correct size needle tor thread and fabric.

Insert new needle.
Replace needle plate, or polish off burrs completely.

Breaking Bobbin Thread

improper bobbin threading.
Lint in bobbin holder or hook race.

Check bobbin threading.
Clean bobbin holder and hook race.

Fabric not Moving

Darning plate in place.
Stitch Length set at 0.
Thread knotted under fabric.
Push-pull clutch is disengaged.

Remove darning plate.
Adjust Stitch Length Control.
Place both threads back under presserfoot before beginning

to stitch.
Push in the clutch.

Machine Jamming Knocking Noise

Til read caught in hook race.

Lint in bobbin holder or hook race.

Disassemble and clean hook race.
Clean bobbin holder and hook race.

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