YAMAHA PLATE 6E0-44323-00 PAF4-03000015

Function and technical context

The plate is a critical component of the drive system in Yamaha and Mercury marine engines, responsible for the transfer of power from the crankshaft to the propeller via the propeller shaft. This disc acts as a direct coupling element, supporting significant rotational forces during navigation and maneuvering. Its wear or deterioration compromises the efficiency of the transmission of motion, and can cause excessive vibrations in the stern shaft, loss of thrust or progressive misalignment that affects the overall performance of the boat.

When to replace this part?

The chainring should be inspected regularly at each seasonal inspection, especially if you notice unusual vibrations in the stern shaft, metallic noises during acceleration, or gradual loss of power without apparent cause. Preventive replacement is recommended every 500-800 hours of operation or after signs of cracks, deformation or visible wear on the contact surfaces are detected. Changing this part preventively avoids costly navigation breakdowns and guarantees the correct alignment of the entire propulsion train.

Equivalent manufacturer part numbers