Sears 385.17724 - Manual (Page 60)

SECTiO’Ni 4. PERFORMAMCE PRÜBLEi'/S CHART
PROBLEM PROBABLE CAUSE CORRECTION
Skipping Stitches
incorrect size needle.
Bent or blunt needle.
Incorrect setting ot 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 plate.
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 presser foot before beginning
to stitch.
Push in the clutch.
Machine Jamming'Knocking Noise
Thread caught m hook race.
Lint in bobbin holder or hook race.
Disassemble and clean hook race.
Clean bobbin holder and hook race.
57