Excuse me, I have a 2000 F12 Phantom with liquid cooling, and after replacing the cylinder, piston, studs, head, overhauling the carburettor, and replacing the water pump, I think I finally have it running again. The scooter's top speed is now a disappointing 55 km/h; however, I should note that all the other parts I haven't mentioned so far are the old parts, which may explain why it travels so slowly. drift boss