200 according to Amal's information, 230 according to the Mk3 manual and riders manual. Edit: 220 according to the Mk3 parts book. What are the carb numbers (LH and RH - 932/??)? A "ham can" isn't standard and what about the silencers/mufflers as the original black caps/bean cans usually get replaced with peashooters, etc.? If so, then there's a good chance 200 is going to be too weak.