SINGER W311 User Manual
Page 31
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30
T rouble
Probable Cause
Correction
Skipping
S ritches
Bent needle
Discard and replace.
Needle placed
incorrectly in clamp
See instruction' page N
0
,
6
.
Too fine a needle
for thread being used
See needle and thread chart, page No. 4.
Irregular
Stitches
Upper thread tension
too loose
Tighten upper tension.
Improper threading
See threading instruction, page N
0
.
8
.
Bobbin not wound
evenly
Rewind bobbin.
Uneven
St itches
Pulling or holding
material
Avoid pulling or holding material, just guide it.
Not enough tension
on upper thread
Increase tension.
Poor quality thread
Try different thread.
Needle too fine for
thread being used
See needle and thread chart, page No. 4.