How to use Seafoam on onboard generator?

My Onan generator will no run. I must move the manual choke back and forth to keep running. I have had good success on small engines using seafome but it is put in the gas. Generator runs of the engine tank. Will spraying in the carb with seafome spray work?

My experience with Sea Foam was not good. It worked so well it loosened gunk that then clogged the carb jets. The gen ran worse than prior. In the end I had to take apart the carb and clean it the old fashioned way and blow the jets with compressed air.