SINGER W1523 User Manual

Page 29

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12. TROUBLE CHART

PROBLEM

PROBABLE CAUSE

CORRECTION

Breaking lower

Thread not wound evenly on the bobbin

P.9, P.13

thread

or not drawn up correctly

Lower thread tension too tight

P.11

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

suitable for the materia!

P.14

Incorrect upper threading

R12

Too much oil on the hook

P.26

Irregular stitches

Incorrsct size of nesdlo for the material

P.14

Upper thread tension too loose

P.17

Incorrect lower tension

P.11

The materia! not

Incorrect feed dog height

P.11

fed correctly

Lint stuck on the feed dog

P.25

2 7