White 634D Sewing Machine User Manual


 
13.
REPLACING
LOWER
CUTTER
Replacing
Lower
Cutter
*
Unplug
the
machine
(1)
Open
front
cover
and
disengage
upper
cutter.
(‘See
page
3)
(2)
Loosen
lower
cutter
clamp
screw®and
remove
lower
cutter.
(3)
Set
the
new
lower
cutter.
Align
the
top
of
lower
cutter
with
the
top
of
needle
plate,
and
tighten
lower
cutter
clamp
screw
a
14.
CHANGING
LIGHT
BULB
When the
light
does
not
come
on
even
though
it
is
switched
on:
How
to
remove
the
lamp
cover.
(1)
Take
out
the
power
supply
plug.
(2)
Remove
the
presser
foot
lifter
by
pulling
it
out.
(3)
Remove
the
lamp
cover.
(4)
Change
the
light
bulb.
(5)
Replace
the
lamp
cover.
How
to
use
the
bulb
catcher
(plastic
sheath),
(1)
Take
out
the
power
supply
plug.
(2)
Place
the
bulb
catcher
(plastic
sheath)
found
in
the
accessory
box
around
the
bulb
in
the
direction
of
arrow
,
turn
it
in
the
direction
of
arrow
©,
and
remove
the
bulb.
(3)
Replace
the
new
bulb
in
the
reverse
steps
of (2).
15.
LUBRICATION
Although
Lubrication
is
not
required
often
for
this
machine
since
the
important
parts
are
all
made
of
a
special
oil
impregnated
sintered
metal,
one
or
two
drops
of
oil
on
moving
metal
parts
will
increase
durability.
F
a
—21—