High Altitude Operation - Honda EM5000X Owner's Manual

3; Turn the fuel valve to the OFF position.
. .
FUEL VALVE
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High altitude operation
At high altitude, the standard carburetor air-fuel mixture will be excessively
rich. Performance will descrease, 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 modifica-
tions.
Even with suitable carburetor jetting, engine horsepower will descrease ap-
proximately 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.
CAUTlON: Operation of the Generator at an altitude lower than the car-
buretor is jetted foi- may result in reduced performance, overheating,
and
serious engine damage caked 'by an excessively lean air/fuel mixture.
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