SINGER W1599 - Manual (Page 48)

21. TROUBLE CHART
PROBLEM PROBABLE CAUSE CORRECTION
Breaking lower Thread not wound evenly on the bobbin RIO, P.15
thread or not drawn up correctly
Lower thread tension too tight P.12
Lint stuck in the bobbin case and inside Remove lint
the tension spring and fluff with a
cleaning brush
Skipping stitches Needle not fully inserted P. 6
Needle bent
P. 6
Size or type of needle and thread not
P.16
suitable for the material
Incorrect upper threading R13
Too much oil on the hook P.45
Irregular stitches Incorrect size of needle for the material P.16
Upper thread tension too loose P.20
Incorrect lower tension P.12
Thè material not
fed correctly
Pattern selection dial not set correctly P.17
Incorrect feed dog height P.12
Lint stuck on the feed dog
P.44
Noisy machine Check for thread in race, the
slightest amount of thread in race may
cause noise or binding, use material
like tooth pick or cotton swab to
clean.
P.45
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