Operation Manual

Faults
and
how
to
remedy
them
Cause
1
Machine
skips
stitches
Remedy:
Needle
not
inserted
corre
tly.
Wrong
needle
used
Needle
bent
or
blunt.
Machine
threaded
improperly
Needle
too
thin
for
thread
used
2. Needle
thread
breaks
For
any
of the
above
reasons.
Thread
tension
too
strong.
Poor
quality
or
knotty
thread
used,
or
thread
that
has
become
too dry
by
excessive
storage.
3.
Needle
breaks
Needle
not
pushed
up
as
far as
it
will
go.
Needle
bent.
Needle
too
thin
or
too
thick.
Needle
bent
and
strikes
needle
plate
because
fabric
is
pushed
or poled.
Bobbin
case
improperly
inserted.
4. Seam
is not
uniform
Tension
out
of adjustment.
Thread
too
thick,
knotty
or
hard.
Bobbin thread
wound
unevonly.
Kinks
appear
on
top
and
bottom
of
material.
Push
needle
up
as
far
as
it will
go,
its
flat
shank
side
facing
rear.
Insert
system
1
30
705
H
needle
Insert
new
needle.
Check
threading.
Use
thicker
needle.
See
par
1
above.
Regulate
thread
tensions.
Use
only
good
qua
ity
thread.
Insert
new
needle
and
push
it
up
as
far
as
it will
go.
Insert
new
needle.
See
Needle
Chart.
Let
machine
feed
the fabric
alone.
Only
guide
the
material
lightly.
When
inserting the
bobbin
r.,ase,
push
it
in
as
far
as
it will
go.
Check
upper
and
lower
tensions.
Use
first
class
thread
only.
Durng
bobbin
winding,
Jo
not
hold
thread
in
hand,
but
puss
it tfirough
the
bobbin
winder
tension.
Thread
machine
properly and
chock
both
tensions.
56