I have the Onan 5500 in our toyhauler and while I can't run the carb dry, I do drain the carb after I shut the generator off. We use it once a year maybe, and have had no issues with it starting back up. I usually throw some Stabil in the fuel tank if I can remember. Seems like the same fuel has been in the tank for a couple years, but I use it so infrequently I don't remember exactly.
I do the same with my carburetted bike that is going to be sitting for an extended time. An extended time is anything over a month or two.
