THICK t:1.0mm 61N-45587-00-10

Function and technical context

This 1.0 mm thick supplement disc is part of the transmission and mechanical adjustment system of Yamaha outboard motors, specifically in the F25 series. It is a precision component that acts as a spacer or shim in the coupling of internal engine elements, guaranteeing correct tolerances between moving parts. Its correct thickness is essential to maintain the alignment of critical components, avoiding excessive play that could cause vibration, premature wear or loss of propeller performance. The dimensional precision of this disc is essential for the reliable operation of the mechanical group in demanding navigation conditions.

When to replace this part?

The supplementary discs must be inspected during seasonal maintenance, especially after interventions in the transmission area or if abnormal vibrations are observed in the engine. Although this is a long-lasting passive part, cumulative wear of adjacent parts or improper installation can compromise its function, requiring replacement to restore factory tolerances. Preventively replacing this component during major repairs avoids alignment problems and guarantees optimal operation of the propeller in future navigation campaigns.

Equivalent manufacturer part numbers