Set the power switch to "On" and the fuel valve to "Open" and place the generator on level ground if won't start or runs rough.
Drain the tank and fill it with fresh fuel. Connect the wire to the spark plug if has become detached and the engine isn't running well or won't start at all. Replace the spark plug if the electrode is burned or the porcelain is cracked.
Loosen the screws on the air cleaner cover, and then remove the cover and the cartridge from the base and install a new air cleaner if the engine refuses to start or runs poorly. Wait five minutes and start the generator again if you feel it may be flooded.
Add new fuel and change the oil if the generator shuts down while it's running.