AIR FILTER
CAUTION: Do not clean filter in gasoline or other flammable solvent to avoid creating a fire hazard or producing harmful evapora- tive emissions.
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 can never be completely cleaned. 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.Reinstall air filter.
6.Reinstall cylinder cover and 3 screws. TIghten securely.
Air Filter
Air Filter
Screws
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 avoid creating a fire hazard or affecting engine performance.
Replace the spark arresting screen if breaks occur.
CLEANING THE SPARK
ARRESTING SCREEN
Clean every 25 hours of operation or annually, whichever comes first.
Steel
Backplate
Muffler
Muffler
Bolts
Aluminum
Backplate Muffler
GasketBolt Cover Locknut
1.Loosen and remove the 3 cylinder cover screws. Remove the cylinder cover.
2.Pull off the spark plug boot.
3.Loosen and remove the locknut from the bolt cover. Remove the bolt cover.
4.Loosen and remove the 2 muffler bolts. Remove the muffler and backplates. No- tice the orientation of these parts for re- assembling.
5.Locate the 2 outlet cover screws on the muffler. Loosen and remove both screws. Remove the outlet cover and spark arresting screen.
BACK VIEW OF MUFFLER
Outlet Cover | Muffler |
|
Screws
Spark Arresting
Screen
6.Clean the spark arresting screen with a wire brush. Replace screen if any wires are broken or screen is blocked after cleaning.
7.Reinstall spark arresting screen.
8.Reinstall outlet cover and 2 screws. En- sure outlet cover and both screws are re- installed correctly to prevent damage to the saw (see illustrations). The exhaust outlets must face the chain brake (bar side) of the saw.
Outlet Cover
Exhaust Outlets
Exhaust Outlets must face chain brake (bar side) of chain saw
9.Inspect the muffler gasket and replace if damaged.
10.Reinstall backplates, muffler gasket and muffler using muffler bolts. TIghten until secure.
11.Reinstall bolt cover and locknut.
12.Reinstall the spark plug boot.
13.Reinstall the cylinder cover and 3 screws. Tighten securely.
CARBURETOR ADJUSTMENTS
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:
SChain moves at idle. See IDLE
SSaw will not idle. See IDLE
Idle Speed-T
Allow engine to idle. If the chain moves, idle is too fast. If the engine stalls, idle is too slow. Adjust speed until engine runs without chain movement (idle too fast) or stalling (idle too slow).
STurn idle speed screw (T) clockwise to in- crease engine speed.
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