Cleaning
the air filter:
A dirty air filter decreases
engine perform-
ance and increases
fuel
consumption
and
harmful
emissions.
Always
clean
after 10
tanks of fuel or 5 hours of operation,
which-
ever comes
first. Clean more frequently
in
dusty conditions.
A used aire filter can never
be completely
cteaned,
it is advisable
to re-
place your air filter with a new one after every
50 hours of operation,
or annually, whichever
comes
first.
1.
Loosen 3 screws
on cylinder
cover.
2.
Remove
cylinder
cover.
3.
Remove air filter.
4.
Clean the air filter using hot soapy water.
Rinse with clean cool water. Air dry com-
pletely before reinstalling.
5.
Lightly oil air filter before installing
to im-
prove
the
efficiency
of air filter.
Use
2-cycle
engine oil or motor oil (SAE 30).
Squeeze
excess
oil from filter.
6.
Reinstafl air filter.
7.
Reinstall
cytinder
cover and 3 screws.
Tighten
securely.
....
/---,_,_,_--
Cylinder
Air l-filer _
_"_ ._'_ ......
Cover
C> * °rews
I_'N _'_l/V_<"
Cylinder
INSPECT
MUFFLER
AND
SPARK
ARRESTING
SCREEN
_WARNING:
The muffler
on this
product
contains
chemicals
known
to the
State of California
to cause cancer.
As the unit is used, carbon deposits
build up
on the muffler
and spark
arresting
screen,
and must be removed to avoid creating afire
hazard
or affecting
engine performance.
Replace the spark arresting
screen if breaks
occur.
CLEANING
THE
SPARK
ARREST-
ING
SCREEN
Cleaning
is required
every 25 hours of op-
eration or annually, whichever
comes
first.
Outlet
Guide
Backplate
Muffler
Gasket
Muffler
/
Muffler
_/ Bolts
Bolt Cover
Looknut
1.
Loosen and remove the Iocknut from the
bolt cover.
2.
Remove the bolt cover.
3.
Loosen
and remove the 2 muffler bolts.
Remove
the muffler, muffler gasket, out-
let guide and backplate.
Notice the ori-
entation
of these parts for reassembling.
4.
Locate the 2 outlet cover screws
on the
muffler.
Loosen
and
remove
both
screws.
5.
Remove
the outlet cover.
_
Outlet Cover
BACK ViEW OF
MUFFLER
Muffler
Screws
6,
7.
Spark Arresting
Screen
8,
9.
Remove
spark arresting
screen.
Ctean the spark arresting
screen with a
wire brush. Replace screen if any wires are
broken or screen is blocked after cleaning.
Reinstall spark arresting screen.
Reinstall
outlet cover and 2 screws.
En-
sure outlet cover and both screws are re-
installed
correctly
(see
illustrations)
to
prevent damage to the saw. The exhaust
outlet
must face
the chain
brake
(bar
side) of the saw.
Outlet Cover
Exhaust
_,.
_/
Outlet
Exhaust
Outlet must face chain
brake (bar side) of chain saw
10. inspect the muffler gasket
and replace if
damaged.
11. Reinstall
backplate,
outlet guide, muffler
gasket,
and muffler
using muffler bolts.
Tighten until secure.
12. Reinstall
bolt cover and Iocknut.
Tighten
securely.
CARBURETOR
ADJUSTMENT
_1= WARNING
:
The chain will be mov-
ing during most of this procedure,
Wear your
protective
equipment
and observe
all safety
precautions,
The chain must not move at idle
speed.
The carburetor
has been carefully
set at the
factory.
Adjustments
may be necessary
if
you notice any of the following
conditions:
• Chain moves at idle. See iDLE SPEED-T
adjusting
procedure.
• Saw will not idle. See IDLE SPEED-T
ad-
justing
procedure.
Idle
Speed-T
Allow engine to idle. if the chain moves,
idle
is too fast. If the engine statls, idle is too slow.
Adjust speed until engine runs without chain
movement
(idle too fast) or statling (idle too
slow).
The idle speed screw is located in the
area above the primer bulb and is labeled T.
• Turn idle speed screw
(T) clockwise
to in-
crease engine speed.
14