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16
MAINTENANCE PROCEDURES
FUEL RECOMMENDATIONS
Fuel must meet these requirements:
●Clean, fresh, unleaded gasoline.
●Octane ra ng of 87 (R+M)/2 or higher.
●Research Octane Number (RON) 90 octane minimum.
●Gasoline up to 10% ethyl alcohol, 90% unleaded is
acceptable.
●Methyl Ter ary Butyl Ether (MTBE) and unleaded
gasoline blend (max 15% MTBE by volume) are approved.
●Do not add oil to gasoline.
●Do not overfill fuel tank.
●Do not use gasoline older than 30 days.
Fuel must meet these requirements:
1. Clean area around fuel cap.
2. Remove fuel cap. Fill to base of filler neck. Do not
overfill fuel tank. Leave room for fuel to expand.
3. Reinstall fuel cap and ghten securely.
ADD FUEL
CLEAN FUEL VALVE
Engines are equipped with a fuel valve and integral screen
fi lter located at inlet of carburetor. It controls and filters
fuel flow from tank to carburetor. Clean fuel valve cup of
debris.
1. Remove two nuts, two screws, and carburetor cover
panel.
2. Turn fuel valve lever to OFF posi on.
3. Remove fuel valve cup. Remove O‐ring and filter screen.
4. Clean screen and fuel valve cup with solvent and wipe it
off.
5. Check screen and O‐ring, replace if damaged.
6. Reinstall O‐ring followed by fuel valve cup. Rotate fuel
valve cup un l it is finger ght. Turn with a wrench 1/2 to
3/4 full turn.
7. Turn fuel valve to ON posi on and check for leaks. If fuel
valve leaks repeat steps 5 & 6.
8. Tighten fuel cap securely.
9. Reinstall carburetor cover panel securing with hardware
removed in step 1.
REPLACING SPARK PLUGS
Clean out spark plug recess. Remove plug and replace.
1. Check gap using wire feeler gauge. Adjust gap, see
specifica on table for adjustment.
2. Install plug into cylinder head.
3. Torque plug to 20 . lb. (27 N∙m).
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