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High Altitude Operation - Honda EM3500X Owner's Manual

Honda generator owner's manual
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3. Turn the fuel valve to the OFF position.
FUE'L VALVE
l
High 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 approx-
imately 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.
25

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Em3500sx