HONDA GC135E GC160E User Manual
Page 12
12
High altitude operation
Operation of the engine 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.
At high altitude, the standard carburetor air-fuel mixture will be ex-
cessively 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 engine at altitudes higher than
1,830 m (6,000 feet) above sea level, have your authorized Honda
dealer perform these carburetor modifications.
Even with suitable carburetor jetting, engine horsepower will
decrease approximately 3.5% for each 300 m (1,000 feet) increase
in altitude. The effect of altitude on the horsepower will be greater
than this if no carburetor modification is made.
06/12/01 19:15:29 32Z2L600_012
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