MAINTENANCE
AIR
FILTER
All chain saw
service,
other than the items listed here in your
Owner's
Manual maintenance instructions, should be
performed by your authorized McCulloch Servicing Dealer.
Keep
the saw, bar and chain
clean.
Do not allow the filters,
muffler, and cylinder fins to become plugged tir covered
with
saw
dust,
dirt
or other foreign material. Never put
dirty
fuel or
chain
oil
into
the saw.
SPARK
PLUG
For
efficient operation of the saw engine, the spark
plug
must
be kept clean and properly gapped.
1.
Move
ignition/stop
switch to
"STOP"
position.
2.
Disconnect the black rubber connector on end of the wire
from
the spark
plug
by twisting and
pulling
at the same
time.®
3.
Remove spark
plug
with
spark
plug
wrench. Do not use
any
other tool.
4.
Clean
electrodes
with
emery
cloth
or fine sandpaper. Blow
all
dust away. Do not use a
grit-type
cleaning machine.
Wear
eye
protection
during
this
operation.®
5.
Adjust the electrode air gap to 0.025 in. (0.635mm) by
bending side electrode
only.®
6.
Re-install spark
plug
(snug but
don't
overtighten) and
black
rubber spark
plug
connector.
7.
For replacement spark plugs of different heat ranges, see
your McCulloch dealer.
Never
operate saw
without
the air
filter,
or dust and
dirt
will
be sucked
into
the engine and damage it. The air
filter
must
be kept
clean.
If it becomes damaged, install a new
filter
as
follows:
1.
Remove
dirt
from
around the air
filter
cover to prevent
dirt
from
falling
into
the
airbox.®
2.
Remove the air
filter
cover and air
filter.
Shake
or gently
tap the
filter
against a stump or other piece of wood to
remove loose
dirt
and dust
particles.®
3.
Wash the air
filter
in a clean solvent only.
CAUTION:
When using solvents,
follow
solvent manu-
facturer's
instructions.
4.
When the air
filter
has dried, re-install it, being certain the
four
locating
bosses
are aligned inside the corners of the
air
box.
5.
Re-install the air
filter
cover, being certain the assembly is
securely
mounted.
NOTE:
When
cutting
under dusty conditions, it is advisable to
carry
several
clean filters and change the
filter
as needed
throughout
the working day. A
felt
air
filter
is recommended
for use in highly abrasive conditions. It may be obtained
from
your McCulloch dealer.
FUEL
CAP
The
fuel tank cap is vented to prevent
build-up
of either
pres-
sure
or vacuum in the tank. Both conditions
will
affect opera-
tion
of the engine. The vent can become plugged
through
the
use
of
dirty
fuel or
dirt
falling
into
the fuel tank
during
refueling operations. If pressure or vacuum develops, have
your McCulloch dealer service the saw.
15
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