VERTICAL SHAFT 61N-45510-10

Function and technical context

The 61N-45510-10 vertical shaft is a fundamental component of the transmission system in Yamaha outboard motors, responsible for transferring the power of the engine to the propeller through the gearbox. This axis works inside the motor leg, supporting torsion loads and constant vibrations during navigation. Its structural integrity is essential to maintain proper transmission alignment and ensure that power is transmitted without excessive losses or play that impair the boat's maneuverability and performance.

When to replace this part?

Symptoms of wear on the vertical shaft include excessive vibration in the drive leg, clunking from the gearbox, and loss of alignment that affects the boat's steering. It is recommended to inspect the condition of the axle at each seasonal inspection, paying attention to any visible deformation or abnormal play. Preventive replacement of this component prevents secondary damage to bearings and gears, which would lead to much more expensive and lengthy repairs out of the water.

Equivalent manufacturer part numbers