SINGER W311 User Manual
Page 30
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Trouble
I’rabable Cause
Correction
Upper Thread
Breaking
Improperly threaded
Too much tension
Refer to therading instructions. See page 8
and retliread machine.
Loosen tension on upper thread by turning
thread tension knob to lower number.
: Starting with take-up
in incorrect position
Always start sewing with take-up lever in
highest position.
Improper setting of
needle
Refer to needle setting instruction. See page 5.
fient or eye of needle
= too sharp :
Bent or blunt needle =
Try a new needle.
Discard all blunt or bent needles and replace
with new ( re.
Material
Puckering
Tensions too tight :
See tension adjustment page 10.
Dull needle
Change needle.
Stitch length too long
Reduce stitch length.
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