YAMAHA BOLT 6R5-11633-10 REC6R5-11633-00

Function and technical context

The 6R5-11633-10 bolt is a critical fastening element on Yamaha outboard motors, responsible for securing structural and functional components of the engine block. This bolt works in the engine mounting and joining system, supporting continuous vibrations and mechanical loads derived from operation at different revolutions. Its integrity is essential to maintain the correct alignment of the engine, avoid clearances that generate abnormal noises and prevent the entry of water through poorly tightened joints, which could cause internal corrosion and damage to the cooling circuits.

When to replace this part?

The engine mounting bolts should be inspected when unusual vibrations appear in the engine casing, loss of tightening after several hours of navigation, or when water ingress is detected in adjacent compartments. It is recommended to check the condition and tightness of the fastening during each seasonal maintenance, especially after navigation in murky waters or with impacts against floating objects. Replacing this bolt preventatively during maintenance checks prevents emergency repairs at sea and ensures that the engine maintains its structural rigidity throughout the sailing season.

Equivalent manufacturer part numbers