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TROUBLE
CHART
Trouble
Probable
Cause
Correct
Operation
Machine
does
Not
plugged
in
properly.
See
Page
7-9-12-59
not
sew
Power
supply
switch
is
not
on.
Thread
is
stuck
in
the
hook
groove.
Bobbin
winder
Spindle
is
pushed
to
the
right.
Making noise
Lack
of
oil.
See
Page
12-59
Running
slowly
Lint
or
thread stuck
in
rotary
hook.
Lint
stuck
in
feed
dog.
Machine
kept
in
avery
cold
or
very
Leave
machine
in
a
normally
hot
place.
warm room
for
a
few
hours
before
use.
Breaking
upper
Improper upper
threading.
See
Page
9-10-12-18
thread
Upper
thread
tension
too
tight.
Bent or
blunt
needle.
Improper
needle
setting
Removing
fabric
when
take-up
lever
is
not
in
the
highest
position.
Upper
thread
toothick
or
too
thin
for
needle
used.
Needle
hole
on
needle
plate
damaged.
Breaking lower
Thread
not
wound
evenly
on
bobbin
See
Page
9-14
thread
or
not
drawn
up
correctly.
Lower
thread
tension
too
tight.
Lint
stuck
in
bobbin
case
and
inside
tension
spring.
Improper
lower
threading.
Skipping
Improper
needle
setting
See
Page
18-19
stitches
Bent
needle.
Improper
needle
and/or
thread
for
fabric.
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