Yamaha - Clutch,dog - 682-45631-00-00Yamaha Clutch, Dog Lower Unit Drivetrain Component 682 45631 00 00 Overview The dog clutch is what actually connects your gears when you shift into forward or reverse, so when it starts wearing out, youll feel it right away. Ive worked on plenty of lower units where slipping or rough shifting came back to this part. When its in good shape, shifts feel solid and engagement is clean. Its one of those components that keeps your Yamaha feeling tight and