Just picked up a 2003 Honda BF30 4stroke off craigslist. The guy i bought it from said he hit something in the water and the engine started running rough. He idled back to the landing. Im thinking maybe he sheared a flywheel key or maybe the timing belt slipped and jumped time. The motor is in good shape and i couldnt see any damage to the lower unit. I gave the guy $350 for it. Hoping this will be a cheap fix. Gonna look at it this weekend