High Altitude Operation - Honda F560 Manual Del Propietário

• High altitude operation

At high altitude, the standard carburetor air-fuel mixture will be too rich.
Performance will decrease, and fuel consumption will increase.
A very rich fuel mixture will also foul the spark plugs and cause hard starting.
High altitude performance can be improved by specific modifications to the
carburetor. If you always operate the tiller at altitudes higher than 610 m
(2,000 feet) above sea level, have your servicing dealer perform this carburetor
modification.
Even with carburetor modification, engine horsepower will decrease about
3.5% for each 300 meters (1,000 foot) increase in altitude. The effect of altitude
on horsepower will be greater than this if no carburetor modification is made.
CAUTION:
Once a carburetor is jetted for high altitude use, operation at lower
altitudes without rejetting may result in reduced performance,
overheating, and serious engine damage.
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