BUSHING 90386-52M02 PAF25-01000001

Function and technical context

This bushing is part of the transmission system and structural support of the outboard motor, staying in the coupling area between the engine block and the gearbox. Its function is to provide precision support that facilitates the correct alignment of the drive shaft, absorbs operational vibrations and distributes the thrust loads generated during navigation. Wear or deterioration in this component directly affects the concentricity of the propulsion system, causing excessive vibrations, increased fuel consumption and, in advanced cases, secondary damage to the adjacent bearings and the tail shaft.

When to replace this part?

Common symptoms of wear include noticeable vibrations in the gearbox or the entire aft structure, metallic noises during acceleration, and visible misalignment of the drive shaft from its theoretical position. It is advisable to check the condition of this bushing every season of intensive navigation or after 200-300 hours of operation in frequently used boats. Preventive replacement during annual maintenance prevents costly transmission breakdowns and ensures efficient operation of the propulsion system.

Equivalent manufacturer part numbers