SCREW 90119-08M15 REC90119-08M15

Function and technical context

This screw is part of the structural fixing systems of the Yamaha engine, ensuring the stability and alignment of critical engine components. Its correct installation guarantees the mechanical integrity of the engine-transmission assembly, avoiding abnormal vibrations and misalignments that would compromise the performance of the propulsion system. Fixation using this element is essential to maintain the rigidity of the motor structure and prevent clearances that affect the concentricity of rotating components.

When to replace this part?

This screw should be inspected and replaced if it shows signs of advanced corrosion, deformation, or if it has been subjected to repeated disassembly cycles that weaken its holding capacity. On saltwater vessels, annual preventive inspection is recommended due to the corrosive environment; On engines subject to intense vibrations or prolonged use in demanding conditions, it is prudent to preventively replace fastening elements during seasonal maintenance to avoid unexpected navigation failures.

Equivalent manufacturer part numbers