Operation Manual

I
5.
Machine
Feeds
Improperly
Cause:
Feed
dog
set
too
low,
does
not
rise
up
enough
above
needle
plate
level.
Accumulations
of
lint
packed
between
feed
teeth.
6.
Machine
Works
Heavily
Ca
use:
Motor
belt
is
too
loose,
or
has
shrunk
and
causes
excessive
pressure
on
bearings.
Machine
works
heavily
when
automatic
embroi
dery
mechanism
is
engaged.
Hook
raceway
lacks
oil
or
is
obstructed
by
pieces
of
thread.
Mechanism
clogged
by
inferior
oil.
Bobbin
winder
working
while
sewing
(when
a
bobbin
is
not
being
filled).
Remedy:
Have
your
Pfaff
dealer
make
the
necessary
adjustment.
Take
off
needle
plate
and
remove
lint
with
a
stiff
brush.
Remedy:
Have
your
Pfaff
dealer
adjust
the
belt
tension.
See
note
on
page
8.
Clean
and
oil
hook
raceway.
Use
only
Pfaft
sewing
machine
oil
——
never
salad
oil
or
glycerine.
Stop
bobbin
winder.
32