Operation Manual

22
High altitude operation
Operation of the tiller at an altitude lower than the carburetor is jetted
for may result in reduced perfo rmance , overheatin g, and serio us en-
gine damage caused by an excessively lean air/fuel mixture.
At high altitude operation, 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 specific modification to
the c arburetor. If you always operate the tiller at altitude higher than
1,500 m (5,000 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 foot) increase in altitude.
The effect of altitude on horsepower will be greater than this if no
carburetor modification is made.
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