SELECTOR 664-45631-01 REC664-45631-01

Function and technical context

The 664-45631-01 selector is a directional control component that is part of the transmission and control system of Yamaha and Mercury marine engines. This device allows the operator to select the different engine operating positions: neutral, forward, reverse and transmission override. Its correct operation is essential to ensure safe maneuverability of the boat and avoid damage to the gearbox gears due to incorrect selections or gear changes under excessive load.

When to replace this part?

The selector requires replacement when it has difficulty engaging gears, intermittent blocking, imprecise movement of the lever or when it does not maintain the selected position stable. Although there is no predetermined maintenance interval like that of filters or impellers, it is recommended to inspect their condition during each seasonal inspection, especially after intensive maneuvers. Changing the selector preventively at the first signs of wear avoids being left without driving control in open water and prolongs the useful life of the transmission.

Equivalent manufacturer part numbers