Operation Manual
Maintenance
and
trouble-shooting
Trouble-shooting
Problem:
Remedy:
The
machine
skips
stitches
The
needle
is
not
properly
inserted.
Push
needle
fully
upwards,
flat
side
facing
the
back.
The
wrong
needle
is
inserted.
Use
a
needle
system
130/705
H.
Needle
is
bent
or
blunt.
Insert
a
new
needle.
Machine
is
not
properly
threaded.
Check
how
machine
is
threaded.
Needle
is
too
small
for
thread.
Use
a
larger
needle.
Needle
thread
breaks
See
reasons
above.
See
above.
Thread
tension
is
too
tight.
Adjust
thread
tension.
Thread
is
poor
or
has
slubs
in
it,
or
has
Only
use
good
threads.
become
dry
after
too-long
storage.
Thread
is
too
thick.
Use
needle
with
large
eye
(System
130
N).
Needle
breaks
off
Needle
is
not
pushed
fully
in.
Insert
new
needle
and
push
fully
in.
Needle
is
bent.
Insert
new
needle.
Needle
is
too
thick
or
too
thin.
See
needle
chart
(pages
58-59)
Needle
is
bent,
and
has
hit
the
needle
Let
the
machine
feed
the
fabric.
plate
because
you
are
pulling
or
Only
guide
the
fabric
lightly
pushing
the
fabric.
The
bobbin
case
is
not
properly
installed.
When
you
insert
the
bobbin
case,
push
t
fully
into
the
stop.
Seam
is
sewn
unevenly
The
tension
needs
adjusting.
Check
top
and
bottom
tensions.
Thread
is
too
thick,
slubbed
or
hard.
Only
use
perfect
threads
The
bobbin
thread
is
unevenly
wound.
Do
not
wind
thread
free-hand,
but
run
it
on
through
the
winding
tension.
Thread
bunching
at
top
or
bottom
Thread
up
correctly.
Check
needle
and
side
of
fabric,
bobbin
thread
tensions
Machine
does
not
feed
or
feeds
irregularly
Sewing
lint
has
collected
between
the
Remove
needle
plate,
remove
lint
feed
dog
teeth
rows
with
brush.
Feed
dog
is
lowered,
slide
A
(see
page
27)
Push
slide
B
(see
page
27)
to
left.
at
right.
Machine
is
running
with
difficulty
There
are
thread
remnants
in
the
hook
race.
Remove
the
threads
and
apply
one
drop
of
oil
to
the
hook.
Important
note:
Before
you
replace
sewing
feet
or
needles,
you
must
switch
off
the
main
switch.
Do
not
start
the
threaded
machine
without
fabric
in
it.
If
you
leave
the
machine,
even
for
a
short
time,
do
not
forget
to
switch
off
the
main
switch.
This
is
important
if
children
are
nearby
p
E