MAINTENANCE SCHEDULE
Check:
Fuel mixture level . . . . Before each use Bar lubrication . . . . . . . Before each use Chain tension . . . . . . . Before each use Chain sharpness . . . . . Before each use For damaged parts . . . Before each use For loose caps . . . . . . Before each use For loose fasteners . . . Before each use For loose parts . . . . . . Before each use
Inspect and Clean:
Bar . . . . . . . . . . . . . . . . Before each use Complete saw . . . . . . . After each use Air filter . . . . . . . . . . . . . Every 5 hours* Chain brake . . . . . . . . . Every 5 hours* Spark arresting screen
and muffler . . . . . . . . . . Every 25 hours* Replace spark plug . Yearly Replace fuel filter . . . Yearly
*Hours of Operation
Each hour of operation is approximately 2 tanks of fuel.
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 the life and perfor- mance of the engine and increases fuel con- sumption and harmful emissions. Always clean your air filter after 10 tanks of fuel or 5 hours of operation, whichever comes first. Clean more frequently in dusty conditions. A used air filter can never be completely cleaned. It is advisable to replace your air fil- ter with a new one after every 50 hours of op- eration, 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 completely before reinstalling.
5.Lightly oil air filter before installing to im- prove the efficiency of air filter. Use
6.Reinstall air filter.
7.Reinstall cylinder cover and 3 screws. TIghten securely.
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Air Filter | Cylinder Cover | |
Screws | ||
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| Cylinder | |
| Cover |
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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.
Muffler Diffuser
Spark Arresting Screen
Muffler
Cover
Screws
Muffler Muffler
BodyCover
CLEANING THE SPARK ARREST- ING SCREEN
Cleaning is required every 25 hours of op- eration or annually, whichever comes first.
1.Loosen and remove the 2 muffler cover screws.
2.Remove the muffler cover (cover snaps off muffler body).
3.Remove muffler diffuser and spark ar- resting screen assembly. Notice the orientation of these parts for reassem- bling.
4.Clean the spark arresting screen with a wire brush. Replace screen if breaks are found.
5.Replace any broken or cracked muffler parts.
6.Reinstall diffuser and spark arresting screen assembly with round holes fac- ing up.
7.Reinstall muffler cover and 2 screws. Tighten securely.
CARBURETOR 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 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). The idle speed screw is located in the area above the primer bulb and is labeled T.
STurn idle speed screw (T) clockwise to in-
crease engine speed.
STurn idle speed screw (T) counterclock- wise to decrease engine speed.
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