Operation Manual
Trouble
Shooting
If
trouble
should
occur,
check
the
following:
When
operated
properly,
your
sewing
ma-
•
The
needle
must
not
be
damaged
and
chine
will
hardly
develop
any
trouble.
must
be
inserted
correctly
(p.
17).
Please
remember
to
restore
the
normal
set
ting
after
you
have
completed
your
sewing
•
Select
the
correct
needle
and
thread
from
job
(buttonhole
sewing
or
darning,
for
the
Needle
and
Thread
Chart.
instance)
by
switching
the
machine
back
to
straight
stitching,
flicking
the
needle
posi-
•
Check
whether
the
needle
has
been
tion
lever
to
its
central
position,
and
setting
threaded
correctly
(p.
11).
the
stitch
length
control
on
2.
•
Use
only
high-grade
machine
thread
or
sewing
silk.
•
Check
to
see
that
the
bobbin
case
has
been
inserted
correctly
(p.
9).
•
Both
tensions
must
be
balanced
correctly
(p.
16).
•
Don’t
force
the
feeding
motion,
merely
guide
the
material
lightly.
•
Clean
and
oil
the
machine
as
instructed
(pp.
36
&
37).
•
Make
sure
there
are
no
pieces
of
thread
wedged
between
the
tension
discs.
To
remove
them,
pull
a
narrow
fabric
strip
between
the
tension
discs.
•
The
Pfafl
rotary
hook
will
not
normally
jam,
even
if
the
machine
should
be
handled
improperly.
If
thread
should
happen
to
jam
in
the
hook
raceway,
it
is
sufficient
to
put
a
drop
of
oil
into
the
raceway,
jerk
the
balance
wheel
back
and
then
rock
it
back
and
forth,
without
applying
force.
38