SINGER W1099 User Manual
Page 37
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PROBLEM
PROBABLE CAUSE
CORRECTION
The material
Upper or lower thread tension too tight
P.12,P.18
puckers
Stitch too long for material
P.I6
Thread too thick
P.15
Incorrect threading of upper or lower thread
P.13, P.11
Breaking needle
Needle not correctly inserted
p
y
Needle bent
P. 7
Needle
clamp screw too loose
P. 7
Upper thread tension too tight
P.18
Needle too fine for the material
P.15
Dials and levers have been changed while
the needle was down in the material
P.16, P.19
^
if trouble is stil! apparent in the machine, please consult your nearest
dealer.
Do not try to correct fault by yourself.
For adjusting the tension of any belts, please do not try to adjust it by
yourself but contact your nearest dealer.
Changing Light Bulb
Unplug the machine.
Open face cover as shown.
Remove bulb by unscrewing it
in counterclockwise.
Install a new bulb by screwing it
in clockwise.