what i meant by spit k4 is it stopped being able to run.the person i got it from told me he never took the hsn off of full rich.which would of been better than too lean but he lied cause the piston was green which means too lean.+they left fuel in it all the time causing alot of corrosion.had to be on its way out when i got it cause it only lasted about a quart.i'm curious how long these engines last cause i just got a new one.