THICK YAMAHA 664-45567-01 PAF15-06000010-1

Function and technical context

This supplement disc acts as a force transmission element in the outboard motor drive system, guaranteeing correct synchronization between the crankshaft and transmission components. It is a precision part that supports significant mechanical loads during thruster operation, especially in acceleration maneuvers and sustained navigation. Its wear or deterioration can compromise the power transmission, causing abnormal vibrations, loss of revolutions or even partial decoupling of the transmission, which puts the navigability of the boat at risk.

When to replace this part?

Wear of the supplementary disc is manifested by noticeable vibrations in the tiller, metallic noises during acceleration or irregular behavior of the engine at different speeds. Although there is no fixed maintenance interval for this component, it is advisable to inspect it during each seasonal inspection, especially if the boat has sailed in demanding conditions or with high loads. Proceeding to replace it preventively avoids unexpected breakdowns in navigation and prolongs the useful life of the complete transmission.

Equivalent manufacturer part numbers