THICK t:1.2mm 6L2-45577-00-12 PAF25-04070005-3

Function and technical context

This 1.2mm thick shim disc forms part of the transmission and drive system of Yamaha outboard motors, playing a critical role in the correct alignment and operation of rotating components. Installed in the gearbox area, it acts as an element for adjusting spaces and tolerances, ensuring that the gears and shafts maintain their exact position during operation. Wear or misalignment in this component can cause progressive misalignment, abnormal vibrations, noise in the transmission and, in extreme cases, loss of traction or damage to the internal gears.

When to replace this part?

The supplementary discs should be checked during each seasonal maintenance, especially after intensive operation or if abnormal noises are detected coming from the gearbox area. Symptoms such as persistent vibrations in the shift lever, humming or creaking noises during reverse gear, or progressive loss of traction indicate that it is time to inspect and replace the disc if it is deformed or worn. Preventive replacement during annual maintenance avoids costly later repairs and ensures optimal transmission performance in any navigation conditions.

Equivalent manufacturer part numbers