Pfaff 9 - Page 40

From
time
to
time,
clean
the
parts
at
the
needle-
bar
end
and
in
the
machine
arm
as
well
as
in
the
vicinity
of the
sewing
hook
with
a
soft
brush.
To
do
this,
remove
the
needle,
the
sewing
foot,
the
needle
plate
and
the
bobbin
case
with
the
bobbin.
On
portable
machines,
loosen
the
screw
on
the
bottom
of
the
machine
base
and
tilt
the
machine
back
cautiously.