SINGER W166 User Manual
Page 31
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29
Trouble
Probable Cause
Correction
Bent needle
Discard and replace.
Skipping
stitches
Needle placed incorrectly in
clamp
See instruction page No. 6.
Too fine a needle for thread
being used
See needle and thread chart, page No. 5.
Irregular
Upper
thread
tension
too
loose
Tighten upper tension.
stitches
Improper threading
See threading instruction, page No. 9.
Bobbin not wound even
Rewind bobbin
Pulling or holding material
Avoid pulling or holding material, just guide it.
Uneven
Not
enough
tension
on
upper thread
Increase tension
stitches
Poor quality thread
Try different thread.
Needle too fine for thread
being used
See needle and thread chart, page No. 5.