I own a few motorcycles as well as a honda 300 generator i like to leave a lil fuel in the carbs if i can and have not had any issues doing so.The only one i di have a prob with a carb jet is my daughters quad that sat for a couple months without starting and the fuel valve was one that only works wheen the engine is on.From going dry the pilot jet got clogged up somehow everything else i own has never done this and the ones i know who turn their gas off are ones who have had carb probs after sitting for a while.
Gas in the carb keeps things wet no gas gets dry and gummy from residue.I dont use any stabil either,Longest i had something sit was 6 months it was my old atc i had standing against the wall so i had to turn off gas i would turn it on every now and then to fill carb.When i decided to ride it it took 3 kicks to start.
