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High altitude operation
At high altitude, the standard carburetor air-fuel mixture will be excessively 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 installing a smaller diameter main fuel jet in the
carburetor. If you always operate the generator at altitudes higher than 5000 feet (1500 m) above
sea level, have your authorized dealer install the high altitude main jet.
Even with suitable carburetor jetting, engine horsepower will decrease approximately 3.5% for each
1000’ (305 m) increase in altitude. The effect of altitude on the horsepower will be greater than this if
no carburetor modification is made.
When the carburetor has been modified for the high altitude operation, the air-
fuel mixture will too lean for low altitude use. Operation the generator at an
altitude below 5000 feet (1500 m) with a modified carburetor may cause the
engine to over heat and result in serious engine damage. For use at low altitude,
have your servicing dealer return the carburetor to original factory specification.
Temperature
High temperature unfavorably affects generator operation. Generator performance will decrease
1% for each 10°F (5.5° C) increase in temperature a bove 85°F (29°C). The normal operating range
of this generator is -20° to 104° F (-29° to 40° C)
■
Do not operate the generator when the ambient temperature is below -20° F (-29° C)
■
Do not operate the generator when the ambient temperature exceeds 104
°
F (40° C)
Summary of Contents for 5411074168230
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Page 140: ...140 DIAGRAMME DE C BLAGE BEDRADINGSSCHEMA WIRING DIAGRAM...
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