Pramac Powermate PMi 2000 Mode D'emploi page 15

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e) When the engine is warming up, turn the pulling pole of the air-blocking
valve to the "START" position.
Note : make sure to put to ON the ventilating pole of fuel filling lid ; otherwise
after a long run of the generator there will be lack of air which will cause the stop
of the generator
Attention
If the engine can not restart after halting, check the oil level ahead of other
failures.
Operation at high altitudes
At high altitudes, the standard carburetor air and gasoline mixture will become
excessively dense, causing the decrease of the engine's functions, and increase
of gasoline consumption. To enhance the performance of the engine in
high-altitude areas, you can make special adjustments to carburetor. If you use
the engine at an altitude of over 1500meters (5000 feets), please ask the
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