SINGER W1366 - Manual (Page 32)

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Trouble Probable Cause
Correction
Upper Thread
Breaking ‘
Improperly threaded
Refer to threading instructions, see page No. 8,
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 of
needle Refer to needle setting instruction, see page No. 6.
Bent or eye of needle
Try a new needle.
Bent or blunt needle
Discard all blunt or bant needles and replace
with new.
Material
Puckering
i Tensions too tight
See tension adjustment, page No. 10.
Dull needle Change needle.
j Stitch length too long : Reduce stitch length.