I have a 6000w Briggs and Stratton gasoline generator for the house which recommends running 15 minutes a month. I do this all year and I do use stabilizer. I also dump the gasoline into my truck every 6 months and replenish the gas in the genertator. I have a friend who did not do this and when he needed his after a few years it wouldn't start. It was seized and he had to have the carb rebuilt. He had it fixed but it wasn't cheap.
This all may not apply to an LP fueled generator if LP doesn't leave deposits or coating in the carb but I think you'd want to run it to keep oil coatings on engine parts such as bearings and piston.
If you don't have a manual I'm sure you can google one.
Paul & Sheri - Upstate New York - SUN-0258
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