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TECHNICAL & CONSUMER INFORMATION
SERIAL NUMBER LOCATION
Record the engine serial number in the space below. You will
need this information when ordering parts and when making
technical or warranty inquiries.
Engine serial number: ___________________________________
A: Serial number location
CARBURETOR MODIFICATIONS FOR 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 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 authorized servicing
dealer perform this carburetor modification. This engine, when operated at high altitudes with the
carburetor modifications for high altitude use, will meet each emission standard throughout its
useful life.
Even with carburetor modification, engine horsepower will decrease about 3,5% for each 1.000 feet
(300 meters) increase in altitude. The effect of altitude on horsepower will be greater than this if no
carburetor modification is made
NOTICE
When the carburetor has been modified for high altitude operation, the air-fuel mixture will be too
lean for low altitude use. Operation at altitudes below 5.000 feet (1.500 meters) with a modified
carburetor may cause the engine to overheat and result in serious engine damage. For use at low
altitudes, have an authorized servicing dealer return the carburetor to original factory
specifications.
