Air Filter
Cover
Button
Muffler
Air Filter
Cleaning the air filter:
1.Clean the cover and the area around it to keep debris from falling into the carburetor chamber when the cover is removed.
NOTE: Move choke lever to RUN position before opening air filter cover.
2.Open air filter cover by pushing button (see illustration). Remove air filter.
NOTE: Do not clean filter in gasoline or other flammable solvent. Doing so can create a fire hazard or produce harmful evaporative emis- sions.
3.Wash the filter in soap and water.
4.Allow filter to dry.
5.Apply a few drops of oil to the filter; squeeze filter to distribute oil.
6.Replace parts.
REPLACE SPARK PLUG
Replace spark plug each year to ensure the engine starts easier and runs better. Set spark plug gap at 0.025 inch (0.6 mm). Igni- tion timing is fixed, nonadjustable.
1.Twist, then pull off spark plug boot.
2.Remove spark plug from cylinder and dis- card.
3.Replace with Champion
4.Reinstall the spark plug boot.
REPLACE FUEL FILTER
To replace fuel filter, drain unit by running it dry of fuel, then remove fuel cap/retainer assem- bly from tank. Pull filter from tank and remove it from the fuel line. Install new fuel filter on fuel line; reinstall parts.
Fuel Filter
Fuel Line
CHECK MUFFLER MOUNTING SCREWS
Once each year, ensure muffler mounting screws are tightened securely to prevent damage.
Mounting
Screw
INSPECT MUFFLER AND SPARK ARRESTING SCREEN
WARNING: The muffler on this prod- uct 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 a fire hazard or affecting engine performance.
Muffler Cover | Spark |
| Arresting |
| Screen |
| Hood |
| Screws |
Replace the spark arresting screen every 50 hours of operation or if any damage or breaks in the screen are noted.
NOTE: Do not attempt to clean the spark ar- resting screen.
1.Remove 3 screws from muffler cover. Remove muffler cover.
2.Loosen and remove 4 screws from the muffler hood.
3.Remove the muffler hood and spark arrest- ing screen.
4.Install new spark arresting screen.
5.Reinstall muffler hood and 4 screws. Tight- en screws securely.
6.Reinstall muffler cover and 3 screws. Tighten securely.
NOTE: If any part of the muffler is cracked, broken or damaged, we recommend that the muffler be replaced.
CARBURETOR IDLE SPEED ADJUSTMENT
The carburetor has been carefully set at the factory. Adjustments may be necessary if you notice any of the following conditions:
S Engine will not idle when the throttle is re- leased.
To adjust idle speed:
Allow engine to idle. Adjust speed until engine runs without stalling (idle speed too slow).
S Turn idle speed screw clockwise to in- crease engine speed if engine stalls or dies.
STurn idle speed screw counterclockwise to decrease engine speed.
