14 2000Wi OM
4.2 High altitude operation
At higher altitudes, 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 installing a smaller diameter main fuel jet in the carburetor. If you
always operate the generator at altitudes higher than 6000 feet (1800 m) above sea level, have your authorized
dealer install a high altitude main jet.
Even with suitable carburetor jetting, engine horsepower will decrease approximately 3.5% for each 1000 feet
(305 m) increase in altitude. The effect of altitude on the horsepower will be greater than this if no carburetor
modification is made.
Be sure to have any carburetor modification reversed before operating at lower altitudes.
Operation of the generator at an altitude lower than the carburetor is jetted for may result
in reduced performance, overheating, and serious engine damage caused by an
excessively lean air/fuel mixture.
4.3 Operating at extreme temperatures
High temperature adversely affects generator operation. Generator performance will decrease 1% for each 10°F
(5.5°C) increase in temperature above 85°F (29°C). The normal operating range of this generator is 0° to 113° F
(-18° to 45°C). Although the generator can operate at 0° F (-18° C) it will be necessary to use a lower viscosity
engine oil such as SAE 0W-40. Synthetic oil is recommended for temperatures below 32° F. Even with cold
weather oils, the engine will be more difficult to start.
In very cold weather the engine will actually take longer than normal to warm up because
the oil is thinner and there is less internal friction throughout the warm up period. Once
the engine reaches operating temperature 0W-40 oil is no thinner than straight 40W.
Do not operate the generator when the ambient temperature is below 0°F (-18°C).
Do not operate the generator when the ambient temperature exceeds 113°F (45°C).
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