Operation Manual

6.
Machine
Works
Heavily
Cause:
Remedy:
Hook
raceway
lacks
oil
or
is
obstructed
by
Clean
and
oil
hook
raceway.
pieces
of
thread.
Mechanism
clogged
by
inferior
oil.
Use
only
Pfaff
sewing
machine
oil
never
salad
oil
or
glycerine.
Bobbin
winder
working
while
sewing.
Stop
bobbin
winder.
7.
Machine
Fails
to
Sew
Zigzag
or
Ornamental
Stitch
Desired
Cause:
Remedy:
Wrong
fashion
disc
inserted
or
none
at
all.
Jerk
stitch
width
lever
to
“O
and
insert
proper
fashion
disc.
For
straight
stitching,
too,
a
fashion
disc
should
be
inserted
in
the machine
(see
pp.
6,
7
and 9).
8.
Motor
Idles
Cause:
Remedy:
Motor
disengaging
lever
raised.
Flick
lever
down
(see
page
5).
Thread
Jamming
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,
the
power
of
the motor
in
most
instances
will
be
sufficient
to
overcome
hard
working
of
the
mechanism.
If
this
action
should
not
free
the
jammed
thread,
put
a
drop
of
oil
into
the
hook
raceway,
jerk
the
balance
wheel
back,
then
rock
it
back
and
forth.
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