White 445 - Page 23

21. TROUBLE CHART
PROBLEM PROBABLE CAUSE CORRECTION PROBLEM PROBABLE CAUSE CORRECTION
Breaking lower Thread not wound evenly on the bobbin Р:10, P.15 The material Upper or lower thread tension too tight РІЛ2, P.19
tayaan ar pak. srawn Up cometi РАИ Stitch too long for material PAZ
Lower thread tension too tight pa Thread; too dk Р.16
Lint stuck in the bobbin case and inside Remove lint
the tension spring
and fluff with a
cleaning brush
Breaking needle
Skipping stitches
Needle not fully inserted
Needle bent
Size or type of needle and thread not
suitable for the material
Incorrect upper threading
Too much oil on the hook
Irregular stitches
Incorrect size of needle for the material
Upper thread tension too loose
Incorrect lower tension
Incorrect threading of upper or lower thread | Р.13, Р.11
Needle not correctly inserted PF
The material not
ted correctly
Pattern selection dial not set correctly
Incorrect feed dog height
Lint stuck on the feed dog
Needle bent Rw
Needle clamp screw too loose BR.
Р16 Upper thread tension too tight P.19
Needle too fine for the material P.16
pus Dials and levers have been changed while P.17, P.20
Р.40 the needle was down in the material PH
Zigzag width set more than 2.5 while twin
Р
needle
was
attached
ree
P.19
P.12
n.b.
If
trouble
is
still
apparent
in
the
machine,
please
consult
your
nearest
dealer.
P.17 . Do not try to correct fault by yourself.
PAZ
Р.39
—2—
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.