Trouble-shooting
Problem:
1.
The
machine
skips
stitches
The needle
is
not
properly inserted.
The
wrong
needle is inserted.
Needle is bent
or
blunt.
Machine is not properly threaded.
Needle is too small
for
thread.
2.
Needle
thread
breaks
See reasons above.
Thread tension is
too
tight.
Thread is poor
or
has slubs in it,
or has become
dry
after too-long storage.
Thread is too
thick.
3.
Needle
breaks
off
Needle is not pushed
fully
in.
Needle is bent.
Needle is too
thick
or
too
thin.
Needle is bent, and has
hit
the needle
plate
because you are pulling
or
pushing
the fabric.
The bobbin case is not
properly inserted.
4.
Seam
is
sewn
unevenly
The tension needs adjusting.
Thread is too
thick, slubbed or hard.
The bobbin thread is
unevenly wound.
Thread bunching at
top
or
bottom
side
of
fabric.
5.
Machine
does
not
feed
or
feeds
irregularly
Sewing lint has collected between
the
feed
dog teeth rows.
Feed
dog is lowered, slide B
(see
page 27)
at right.
6.
Machine
is
running
with
difficulty
There are thread remnants in the hook race.
Important
note:
Remedy:
Push
needle
fully
upwards,
flat
side facing the back.
Use
needle system
130/705
H.
Insert a
new
needle.
Check
how
machine is threaded.
Use a
larger needle.
See
above.
Adjust
thread tension.
Only use good threads.
Use
needle
with
large eye
(System
130
N).
Insert new needle and push
fully
in.
Insert new needle.
See needle
chart (pages
82
and 83).
Let
the
machine feed the fabric.
Only guide
the
fabric lightly.
When
you insert the bobbin case,
push it
fully
into the stop.
Check
top
and bottom tensions.
Only use perfect threads.
Do not
wind
thread free-hand,
but
run
it
on through the winding tension.
Thread
up
correctly. Check needle
and bobbin thread tensions.
Remove
needle plate, remove lint
with
brush.
Push
slide B (see page
27)
to
left.
Remove the threads and apply one
drop
of
oil
to
the
hook.
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.
88