Cleaning
the
Feed
Dog and the
Sewing
Hook
lint
is
likely
to
accumulate
on
the underside
of
the
needle
plate
and
in
the
vicinity
of
the sewing hook. Therefore, from time
to
time, strip
the
needle
plate
and
remove
the
lint accumulated
on
its underside
as
well
as
packed between
the tooth rows
of
the feed
dog.
At
the
same
time,
do
not
forget
to
clean
the
sewing hook (Fig.
66)
.
Important
Use non-resinous
and
acid-
free
Pfaff sewing machine oil only. Never use ani-
mal
or
vegetable
oils,
for
they
are
entirely unsuitable.
In
general
it
may
be
said
that
the
bearing
surfaces
of
all
moving
and
rotating
parts
require
regular
lubrication. The oiling points
are
marked
by
arrows
in
Figs.
61...05
and,
hence, will
be
found easily.
To rinse the machine with cleaning fluid thoroughly, it is best
to
place it
on
a
stand. Provided
proper
caution
is
used, it may
be
rinsed even
after
it has
been
mounted
on
a cabinet.
Here
is
the procedure to follow:
Tilt the machine back
and
squirt cleaning fluid into all oilholes marked
by
an
arrow
in
the
pertinent illustrations. Use a
separate
oiler
for
this purpose.
Make sure
that
the clip
belt
does
not
come
in contact with the cleaning fluid
or
the oil,
as
this may cause
hard
running
of
the machine.
One
or
two drops
of
oil normally
ore
sufficient for
each
oiling point. Running
the machine for just a few minutes will suffice
to
work
the
oil thoroughly into
all the bearings. Excessive oiling will
cause
soiling
of
the
work, the excess oil
forming residues which,
together
with the accumulated dust
and
lint, in time
will couse heavy working
of
the machine.
Removing
and
Replacing
the
Face
Cover
The
face
cover
normally
need
only
be
removed when
the
needle
and
presser
bars
have
to
be
adjusted
or
the ports
at
this end
of
the machine
need
clean-
ing. To
do
this, loosen
set
screw K
(Fig
.
63)
and
pull the face
cover
down, then
away
from
the
machine.
Replacing the face cover
is
very
simple because
on
PfafF
260
and
360 machines
no
part
of
the
needle
threader
mechanism is aHached
to
the
face cover.
39
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