SINGER W1523 User Manual
Page 29
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12. TROUBLE CHART
PROBLEM
PROBABLE CAUSE
CORRECTION
Breaking lower
Thread not wound evenly on the bobbin
P.9, P.13
thread
or not drawn up correctly
Lower thread tension too tight
P.11
Lint stuck in the bobbin case and inside
Remove lint
the tension spring
and fluff with a
cleaning brush
Skipping stitches
Needle not fully inserted
P. 6
Needle bent
P. 6
Size or type of needle and thread not
suitable for the materia!
P.14
Incorrect upper threading
R12
Too much oil on the hook
P.26
Irregular stitches
Incorrsct size of nesdlo for the material
P.14
Upper thread tension too loose
P.17
Incorrect lower tension
P.11
The materia! not
Incorrect feed dog height
P.11
fed correctly
Lint stuck on the feed dog
P.25
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2 7
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