PH4000Ri/E Owner’s Manual
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6.5. High Altitudes
At high altitude, performance will decrease, and fuel consumption will increase. Even with the fuel injection system in this
generator, engine horsepower will decrease approximately 3.5% for each 1000 feet (305 meters) increase in altitude.
6.6. 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.
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Do not operate the generator when the ambient temperature is below 0°F (-18°C).
•
Do not operate the generator when the ambient temperature is above 113° F (45° C).
NOTE
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CAUTION
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