Yamaha - Clutch,dog - 6E0-45631-00-00Yamaha Clutch Dog Lower Unit Shifting System 6E0 45631 00 00 Overview If your Yamaha isnt shifting clean into gear, the clutch dog is usually part of the story. This piece takes a lot of abuse every time you go from neutral to forward or reverse, especially if shifts are hard or rushed. Ive opened up lower units where worn clutch dogs caused slipping or grinding that only got worse over time. Replacing it brings back that solid, positive engagement