Stator poops on those frequently as well. Be carefull, it (engine) may be all used up, like, as in an oil burner. Is the exhaust oily like a diesel? The mud caked the cylinder on those, no cooling, crazy overheating, worn rings/bore. $$$ Have fun!
Too much is just barely enough.....
2007 Tiger 1050
2005 Royal Star Tour DeLuxe
1973 Yamaha TX750 1984 Yamaha RZ350
1974 Norton 850 Commando Roadster