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6.8 CARBURETOR MODIFICATION FOR HIGH ALTITUDE OPERATION
At high altitudes, the standard carburetor air-fuel mixture will be too rich.
Performance will decrease, and fuel consumption will increase. A very rich mixture
will also foul the spark plug and cause hard starting. Operation at an altitude that
differs from that at which this engine was certified, for extended periods of time,
may increase emissions.
High altitude performance can be improved by specific modifications to the
carburetor. If you always operate your engine at altitudes above 5,000 feet (1,500
meters), have your servicing dealer perform these carburetor modifications. This
engine, when operated a high altitude with the carburetor modifications for high
altitude use, will meet each emission standard throughout its useful life.
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