View Full Version : Yanaha FourStroke timing belt

06-25-2006, 02:08 PM
"I am looking at repowering my boat with a 250 four stroke. All I;ve ever had was 2 stroke motors. The only thing that concerns me is the timing belt. How often should they be replaced? What happends if they break, can you put a new one on, or do the valves bend?"