Operation Manual

The
bobbin
thread
breaks
The
needle
breaks
Cause
1.
The
needle
is
bent.
2.
The
needle
is
not
attached
properly.
3.
The
material
is
too
thick
or
heavy.
4.
The
material
is
pulled
by
the
operator.
5.
The
needle
is
of
inferior
quality.
Remedy:
Insert
a
new
needle.
Attach
it
correctly.
Use
the
correct
needle
for
the
material.
Don’t
pull
on
the
fabric.
Replace
it
with
a
high-quality
needle.
The
machine
skips
stitches
Cause:
1.
The
needle
is
not
attached
to
the
needle
bar
correctly.
2.
The
needle
is
either
blunt
or
bent.
3.
The
needle
is
damaged.
Remedy:
Attach
it
properly.
Replace
it.
Replace
it.
Looping
of
stitches
Cause:
1.
The
thread
tenson
is
not
properly
adjusted.
Remedy:
Adjust
the
upper
and
lower
thread
tensions,
as
instructed.
Cause:
T.
When
the
bobbin
thread
is
not
wound
correctly,
it
gets
entangled.
2.
The
bobbin
thread
has
slipped
out
from
under
the
tension
spring
of
the
bobbin
case.
Remedy:
Wind
it
properly.
Draw
it
back
under
the
tension
spring.
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