SHAFT BUSHING 6E0-45317-09

Function and technical context

The shaft bushing is a precision component that acts as a support and alignment element for the drive shaft in Yamaha and Mercury marine engines. It works in the propulsion system, allowing controlled rotation of the shaft while maintaining the concentricity necessary for the correct transfer of power from the engine to the propeller. Its wear or deterioration causes excessive radial play, shaft misalignment and abnormal vibration during navigation, which can lead to secondary damage to bearings and mechanical seals if intervention is not made in time.

When to replace this part?

Typical symptoms of wear include noticeable vibrations in the transmission, detectable play when manually moving the shaft with the engine stopped, and in advanced cases, rubbing or dragging noises while driving. It is recommended to inspect the bushing during each seasonal maintenance and proceed with its preventive replacement if lateral play is detected or after 5-8 years of regular operation, thus avoiding costly emergency repairs on the voyage.

Equivalent manufacturer part numbers