Kept in a garage with 1/8 tank of fuel. 1 month turned into 3, turned into a year....turned into 5 1/2 years. Trailered it home yesterday. Was going to dump the fuel; but decided (being lazy) to just dump in 2 gallons of fresh gas to dilute the crap that had been sitting there. Pushed the ignition button, with little expectation of so much as a sputter.... and it fired instantly . Idled fine. No problems. Let it run for 20 minutes and cut it off. Going to get a new battery and get this bike back on the road.