Got this old Yamaha EF2800 generator a few months ago from a friend and just got around to messing with it today. This was the end result. Cleaned the carb, drained the black oil and refilled with some QuickSilver 25W40 I had. Cranked up and ran for 2 seconds and shut off. My friend who was standing on the other side said oh oh look at this lol. Hey you win some you lose some. Im assuming it may have been damaged internally before I got it.