trying to diagnose a vibration in a 2006 yamaha f150. boat has twins on it one is counter rotation can i swap lower units to see if vibration transfer to other motor . i would think i could but not sure. i would think the only difference would be in the gear set up in the lower units themselves...
i bought a boat with amotor that has not been ran for 3 years. when i got boat it started up with fresh gas but ran rough and would die as soon as i would start to give it throttle. so i rebuilt carbs and fuel pump and installed new water pump. now motor runs better but surges as i try to...
