SCREW 90105-06M01 REC90105-06M01

Function and technical context

This bolt is a critical fastening element on Yamaha engines, responsible for maintaining the structural integrity of vital powertrain components. Their correct installation guarantees hermetic sealing and mechanical stability of the areas where they are used, avoiding unwanted vibrations that could compromise the functionality of the motor. Loss of tightening or deterioration of this part can cause fluid leaks, water entering protected compartments or misalignment of attached components, with the serious consequences that this entails for safe navigation.

When to replace this part?

Checking the condition and tightening of the fastening screws should be part of the preventive maintenance of each sailing season, especially on boats subjected to constant vibrations or demanding navigation conditions. If you observe loss of tightness in the areas where it is installed, abnormal movement of attached components or visible corrosion on the screw head, it is time to immediately replace it. Replacing worn screws preventively avoids major repairs and guarantees the reliability of the engine while sailing.

Equivalent manufacturer part numbers