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14
Cleaning the air filter:
A dirty air filter decreases engine perform-
ance and increases fuel consumption and
harmful emissions. Always clean after 10
tanks o f f uel or 5 hours of operation, which-
ever comes first. Clean more frequently in
dusty conditions. A used aire filter cannever
be completely cleaned. It is advisable to re-
place your airfilter witha newone afterevery
50hours ofoperation, orannually,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 cleancoolwater. Airdrycom-
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 (SAE30).
Squeeze excess oil from filter.
6. Reinstall air filter .
7. Reinstall cylinder cover and 3 screws.
TIghten securely.
Air Filter
Cylinder
Cover
Screws
Cylinder
Cover
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
As t he unit is used, carbon deposits build up
on the muffler and spark arresting screen,
and must beremoved to avoid creating a fire
hazard or affecting engine performance.
Replace thespark a rresting screen if breaks
occur.
Muffler Dif fuser
Muffler
Cover
Screws
Muffler
Cover
Muffler
Body
Spark
Arresting
Screen
Cleaning is required every 25 hours of opera-
tion or annually , whichever comes first.
1. Loosen and remove the 2 muffler cover
screws.
2. Remove t he muffler cover (cover snaps off
muffler body).
3. Remove muf fler diffuser and spark arrest-
ingscreen assembly.Notice the orien tatio n
of these parts for reassembling.
4. Clean the spark arrestor screen with a wire
brush. Replace screen if breaks are found.
5. Replace any broken or cracked muffler
parts.
6. Reinstall dif fuser and spark arrestor screen
assembly with round holes facing up.
7. Reinstall muffler cover and 2 screws.
Tighten securely .
CARBURET OR ADJUSTMENT
WARNING: The chain will be mov-
ing during most of this procedure. Wear your
protective equipment and observe all safety
precautions. The chain must notmove atidle
speed.
The carburetor has been carefully set at t he
factory. Adjustments may be necessary if
you notice any of the following conditions:
S Chain moves at idle. See IDLE SPEED--T
adjusting procedure.
S Saw will not idle. See IDLE SPEED--T ad-
justing procedure.
Idle Speed--T
Allow engine to idle. If the chain moves, idle
is toofast. Iftheengine stalls, idleis too slow .
Adjust speed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow). The idle speed screw is located in the
area above the primer bulb and is labeled T.
S Turn idle speed screw (T) clockwise to in-
crease engine speed.
S Turn idle speed screw (T) counterclock-
wise to decrease engine speed.
If you require further a ssistance or are unsure
about performing this procedure, contact your
authorized service dealer or call
1--800--5 54--6 723.
BAR MAINTENANCE
If your saw cuts to one side, has to be forced
through the cut, or been run with an improper
amount of bar lubrication it m ay be ne cessary
to service your bar. A worn bar will damage
your chain and make cutt in g diffi cult.
After each use, ensure ON/STOP switch is in
the STOP position, thenclean all sawdust from
the guide bar and sprocket hole.
To maintain guide bar:
S Move ON/STOP switch to the STOP posi-
tion.
S Loosen and remove chain brake nuts and
chain brake. Remove bar and chain from
saw.
S Clean the oil holes and bar groove after each
5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
S Burring of g uide bar rails i s a normal process
of rail wear . Remove these burrs with a flat
file.
S When rail top is uneven, use a flat file to re-
store square edges and sides.
Correct GrooveWorn Groove
File Rail Edges
and Sides
Square