Alfa Network 233 - Page 37

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Trouble Probable Cause Correction
Bent needle Discard and replace.
Skipping Needle placed incorrectly in
See instruction page
6.
stitches clamp
Too fine a needle for thread
See needle and thread chart, page 5.
being used
Upper thread tension too
Tighten upper tension.
Irregular loose
stitches improper threading See threading instruction, pages 8 & 9.
Bobbin not wound even Rewind bobbin.
Pulling or holding material Avoid pulling or holding material, just guide it.
Not enough tension on upper
Uneven
Increase tension.
thread
stitches
Poor quality thread Try different
thread.
Needle too fine for thread
See needle and thread chart, page b.
being used