THICK t:1.4mm 6L2-45567-00-14

Function and technical context

The shim disc is a critical component of the drive system on Yamaha outboard motors. This piece acts as an adjustment and compensation element in the clutch mechanism, allowing the correct transfer of power from the engine to the propeller. Its thickness of 1.4 mm has been calculated to maintain precise tolerances of the assembly, guaranteeing uniform meshing and avoiding clearances that would cause vibration, loss of thrust or accelerated wear of adjacent components. A worn or deteriorated disc compromises propulsion efficiency and can generate abnormal friction that reduces the useful life of the transmission.

When to replace this part?

Wear of the supplementary disc usually manifests itself with abnormal vibrations during acceleration, difficulty engaging gears or progressive slipping of the transmission. Although there is no universally established fixed maintenance interval for this component, it is recommended to inspect its condition during each outboard engine service, especially after intensive boating seasons or in waters with sediment. Preventive replacement prevents sudden breakdowns in navigation and significantly prolongs the durability of the entire transmission system.

Equivalent manufacturer part numbers