Trouble chart – SINGER W1805 User Manual
Page 47
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;3. TROUBLE CHART
Breaking lower
thread
PROBABLE CAUSE
Thread not wound evenly on the bobbin
or not drawn up correctly
Lower thread tension too tight
Lint stuck in the bobbin case and inside
the tension spring
CORRECTION
P.11, P.14
P.13
Remove lint
and fluff with a
cleaning brush
Skipping stitches
Irregular stitches
I The material not
fed correctly
Needle not fully inserted
Needle bent
Size or type of needle and thread not
suitable for the material
Incorrect upper threading
Too much oil on the hook
Incorrect size of needle for the material
Upper thread tension too loose
Incorrect lower tension
Pattern selection dial not set correctly
Lint stuck on the feed dog
P. 8
P. 8
P.I6
P.14
P.41
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