High Altitude Operation - Honda EB2200X Owner's Manual

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Hight altitude operation
At high altitude, the standard carburetor air-fuel mixture will be excessively
rich. Performance will decrease, and fuel consumption will increase.
High altitude performance can be improved by installing a smaller diameter
main fuel jet in the carburetor and readjusting the pilot screw. If you always
,operate the generator at altitudes higher than 6,000 feet above sea level,
have your authorized Honda Generator dealer perform these carburetor
modifications.
Even with suitable carburetor jetting, engine horsepower will decrease
approximately 3.5 % for each 1,000 foot increase in altitude. The affect of
altitude on horsepower will be greater than this if no carburetor modification
is made.
CAUTION: Operation of the generator at an altitude lower than the
carburetor is jetted for may result in reduced performance, overheating,
and serious engine damage caused by an excessively lean air/fuel
mixture.
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