Cant tell u how to replace the belt its eith in the engin or on the sidewith a cover over timing belt that is.. to set timinmg when your pistons are fully at top of engine turn back 1/8 of a turn right bf top dead center.. valve chould be closed on 1first clyder if not then this means your on the second strock..has to be on first stroke..turn over again then set piston at top with valve closed..your cam should fall in place..note if u remove the cam MAKE SURE U MARK THE CAP TO THE POSTION AND DIRECTION YOU TOOK IT OFF>> if not you will end up with a warped cam and rod caps wore and warped..