MAINTENANCE
WARNING: Avoid touching muffler unless engine and muffler are cold. A hot muffler can cause serious burns.
WARNING: Disconnect the spark plug before performing maintenance except for carburetor adjustments.
CHECK FOR LOOSE
FASTENERS AND PARTS
SMuffler
SSpark Plug Boot S Air Filter
S Housing Screws
CHECK FOR DAMAGED OR WORN PARTS
Contact an authorized service dealer for re- placement of damaged or worn parts.
S Fuel Tank. Discontinue use of unit if fuel tank is damaged or leaks.
SVacuum Bag
INSPECT AND CLEAN UNIT & LABELS
S After each use, inspect complete unit for loose or damaged parts. Clean the unit and decals using a damp cloth with a mild deter- gent.
SWipe off unit with a clean dry cloth.
CLEAN AIR FILTER
Button
Air Filter
Air Filter Cover
A dirty air filter decreases engine perform- ance and increases fuel consumption and harmful emissions. Always clean after every 5 hours of operation or yearly, whichever comes first.
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.Remove parts as illustrated. NOTE: Do not clean filter in gasoline or other flammable solvent. Doing so can create a fire hazard or produce harmful evaporative emissions.
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 0.6 mm. Ignition 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 assembly from tank. Pull filter from tank and remove it from 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 secure and tightened properly to prevent damage.
Muffler
Mounting Screw
CARBURETOR ADJUSTMENTS
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.
Idle Speed Adjustment
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.
