Motor will not run with the choke off & rpm's go up and down

Possibly could be a throttle position sensor, outside of that I would recommend replacing the choke cable, and maybe the choke itself.

If you have not properly shut down the unit after use you will have likely had fuel remaining in the carburetor. The fuel will have evaporated while the unit was not in use leaving a film behind. This residue will plug and interfere with the fuel passages and metering orifices of the carburetor. If the unit runs with the choke on it is likely the carburetor is dirty. Be running the engine the carburetor will possibly clean itself. Make sure you remove any old fuel from the machine and replace with fresh. Allow the unit to run for an extended length of time attempting to return the choke to the run position. If you are able to return the choke to the run position you are on the way of solving this problem. You may need to run it additional time to completely purge the residue.

Additives are available to clean the carburetor and as a last resort if running with fresh fuel doesn't' return the motor to normal you may try it. For best results after mixing and running with the additives leave the unit overnight which may help to remove the remaining residue.

The shelf life of gas containing ethanol is about 30 days. In the future it is best to run the unit dry leaving ot fuel in the carburetor.

All else fails you will need to have the unit serviced by a small engine service center.

The running on choke is caused by a fuel restriction. Check the fuel flow from the tank to the carburetor.Change the fuel filter if it has one. If its good, then the restriction is in the carburetor. The generator is shutting down due to the low rpm coming from the engine. A carburetor rebuild may need to be done.

What brand of engine & horsepower is it?Also about how long was it stored or last time it was run? The reason I ask is if it was stored with gas in it & a fuel stabilizer wasn't added to it,your primary jet is plugged in the carburetor(reason it will only run while choked).

check the condition of your air cleaner . you have to have one in order for it to run right or run @ all

Governor is "hunting. An adjustment should take care of it. nothing more. Take it to camping world and they know what to do.

Changed plug since last year?Choke adjustment? try premium gas?

Only a suggestion. Sounds like the carberator has trash in it. You need to try to clean out the carb and check out the gas tank to make sure that that there is no trash in the tank. When opening the choke lever that allows another way for the fuel to get to the engine in order for it to run.

Just noticed your question... If you still need a little help:
1. If the gas is from last year, drain the tank and the carb bowl and replace gas with new. Visually inspect the inside of the tank ..be sure there's no sediment that needs to be cleaned out.
2. remove air cleaner and make sure it's not plugged or dirty
3. plug the spark plug and clean with spray carb cleaner.
4. At end of season, mix some gas stablizer in with the fuel to keep it from going bad while in storage.

Let me know how it goes..
k

Where can i obtain a manual for the 5500 gas generator