Operation Manual

-
H
The
upper
thread
breaks:
6.
The upper
tension
is
too strong
—
loo
sen
it
(see page
25).
1.
The
needle
is
bent
or
inaccurately
in
serted—replace
the
needle
(see page
7.
The
eye of
the needle
has
a
cutting
edge
—
replace
the
needle.
2.
Knotty,
inferior
quality
thread
is
being
8.
The
bobbin
case
has
a
rough
spot
cut-
used
—
use
a
better
quality.
ting
the
thread
—
take
out
the bobbin
case
and consult
your
dealer.
3.
The
upper
thread
is
incorrectly
thread
ed
—
thread
the
machine
correctly
9.
The
needle
plate
hole
has
a
cutting
(see
page
17).
edge
—
smoothen
it
with
emery-
cloth.
4.
The needle
is
too fine
for
the thread
or
fabric
—
use
a
thicker
needle
(see
10.
The feed
does
not
transport
the
work
pages
10,
11
and
12).
properly
owing
to
an
accumulation
of
lint and
thread
ends
—
unscrew
the
5.
The tension
regulator
spring
735090
is
needle
plate
and
clean
the
feed
as
broken
—
get
a
new
one
to replace
it.
sembly
thoroughly.
69