Operation Manual

Trouble
Shooting
When
operated
properly,
your
sewing
ma
chine
will
hardly
develop
any
trouble.
Please
remember
to
restore
the
normal
set
ting
after
you
have
completed
your
sewing
job
(buttonhole
sewing
or
darning,
for
in
stance)
by
switching
the
machine
back
to
straight
stitching,
flicking
the
needle
posi
tion
lever
to
its central
position,
raising
the
machine
feed
and
setting
the
stitch
length
control
on “2.
If
trouble
should
occur,
check
the
foIIowing
•
The
needle
must
not
be
damaged
and
must
be
inserted
correctly.
•
Selectthe
correct
needle
and
thread
from
the
Needle
and
Thread
Chart.
•
Check
whether
the
needle
has
been
threaded
correctly.
• Use
only
high-grade
machine
thread
or
sewing
silk.
•
Check
to
see
that
the
bobbin
case
has
been
inserted
correctly.
•
Both
tensions
must
be balanced
correctly.
•. Don’t
force
the
feeding
motion,
merely
guide
the material
lightly.
•
Clean
and
oil
the machine
as instructed.
•
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
Pfaff
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.
39