BUSHING 90386-22M15

Function and technical context

This bushing constitutes a fundamental component in the transmission and shaft fixing system in Yamaha outboard motors, specifically in the F15 series. Its function is to maintain precise alignment of the driveshaft while absorbing micro-vibrations and allowing controlled movement of the propulsion system. Being located in the connection area between the gearbox and the output shaft, it works under conditions of constant humidity and pressure, which makes its structural integrity essential to avoid misalignments that compromise engine performance and navigation safety.

When to replace this part?

Wear of this bushing is typically manifested by abnormal vibrations in the transmission, excessive play in the propeller shaft, or metallic noises during acceleration and deceleration. Although there is no strict hour interval, it is advisable to inspect its condition at each seasonal inspection, especially on vessels that operate in salt water or with intense workloads. Preventive replacement of this component prevents cascading damage to the gearbox and other transmission elements, which are significantly more expensive to repair.

Equivalent manufacturer part numbers