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PROBLEM
The
material
puckers
Breaking
needle
PROBABLE
CAUSE
Upper
or
lower
thread
tension
too
tight
Stitch
too
long
for
material
Thread
too
thick
Incorrect
threading
of
upper
or
lower
thread
Needle
not
correctly
inserted
Needle
bent
Needle
clamp
screw
too
loose
Upper
thread
tension
too
tight
Needle
too
fine
for
the
material
Dials
have
been
changed
while
the
needle
was
down
in
the
material
Zigzag
width
set
more
than
2.5
while
twin
needle
was
attached
CORRECTION
P12,
P.20
P.18
P.16
P.13,
P.11
P.
6
P.
6
P.
6
P.20
P.16
P.18,
P.22
P.14
trouble
is
still
apparent
in
the
machine,’
please
consult
your
o
not
try
to
correct
fault
by
yourself.
nearest
dealer.
48—
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.