Filter
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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 15
tanks of fuel 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 with anewone after every
50hours ofoperation, 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 coolwater. Air drycom-
pletely before reinstalling.
5. Lightly oil air filter before installing to im-
prove t he efficiency of air filter. Use
2 --cycle engine oil or motor oil (SAE 30).
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 the unit is used, carbon deposits build up
on the muffler and spark arresting screen,
and must be removed to avoidcreating a fire
hazard or affecting engine performance.
Replace the spark arresting screen if breaks
occur.
Muffler Diffuser
Muffler
Cover
Screws
Muffler
Cover
Muffler
Body
Spark
Arresting
Screen
Cleaning is requir ed every 25 hours of opera-
tion or annually, whichever comes first.
1. Loosen and rem ove the 2 muffler cover
screws.
2. Rem ovethemuffler cover(cover snapsoff
muffler body).
3. Rem ove muffler diffuser and spark arrest-
ingscreenassembly.Notice theorientation
of these parts for reassembling.
4. Cleanthe sparkarrestorscreenwith awire
brush.Replace screen ifbreaks are found.
5. Replace any broken or cracked muffler
parts.
6. Reinstalldiffuserandsparkarrestorscreen
assembly with round holes facing up.
7. Reinstall muffler cover and 2 screws.
Tighten securely .
CARBURETOR ADJUSTMENT
WARNING:
The chain will be mov-
ing during most of this procedure. Wearyour
protective equipment and observe all safety
precautions. The chain must notmove atidle
speed.
The carburetor has been carefully set at the
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
istoo fast. Ifthe engine stalls, idle is tooslow.
Adjust speed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow). The idle speed screw islocated inthe
area above the primer bulb and is labeled T.
S
Turn idle speed screw (T) clockwise to in-
crease engine speed.
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Turn idle speed screw (T) counterclock-
wise to decrease engine speed.
If you requir e further assistance or ar e unsure
about per form ing this procedure, contact your
authorized ser v ice deal er or call
1--800--554--6723.
BAR MAINTENANCE
If your saw cuts to one side, has to be forced
through the cut, or been r un with an improper
amount of bar lubrication it may be necessary
to service your bar. A wor n bar will dam age
your chain and make cutting dif ficult.
After each use, ensure O N /STOP switch is in
theSTOPposition, thencleanallsawdust from
the guide bar and sprocket hole.
To maintain guide bar:
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Move ON/STOP switch to the ST O P posi-
tion.
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Loosen and r em ove chain brake nuts and
chain brake. Remove bar and chain from
saw.
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Cleantheoil holesand bargrooveaftereach
5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
S
Burringof guide barrailsisa normal pr ocess
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