Do you mean drive belt? Support mower so spark plug points straight up. Remove roller (10MM bolt each side). Remove blade. Remove belt cover from underneath mower. Remove 3 engine mounting bolts and manoever engine so drive pulley dis-engages from bearing on mower underside. Remove belt. Replace in reverse order. Simple, but a pain to do (because all the bolts will be rusty/seized).
Phil Saunders, November 2007
