SINGER W7911 - Manual (Page 20)

20
Trouble Probable Cause Correction
Upper thread
breaking
Improperly threaded
Refer to threading instructions see page No. 10
and rethread machine
Too much tension
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 oi
needle
Refer to needle setting instruction see page No. 8
Bent or eye of needle
of too sharp
Try a new needle
Bent or blunt needle
Discard all blunt or bent needles and replace
with new
Material
puckering
Tensions too tight See tension adjustment page No. 12
Dull needle Change needle
Stitch length too
long
Reduce stitch length