YAMAHA 90201-14377 CIRCLIP REC93450-15023

Function and technical context

The circlip is an elastic retaining ring that acts as a fixing element on the drive shafts and rotating components of Yamaha engines. This ring is housed in machined grooves in the shafts, providing an axial lock that prevents shifting of gears, bearings and other critical elements during engine operation. Its correct assembly is essential to maintain the alignment of the gearbox and transmission components, preventing unwanted movements that would compromise the integrity of the propulsion system.

When to replace this part?

Circlips require replacement when permanent deformation, loss of elasticity or fractures are detected after an inspection of the transmission system. Although they do not have a scheduled maintenance interval like other consumables, it is advisable to inspect them at each gearbox disassembly or during general transmission overhaul work. Replacing this component preventively during major maintenance operations prevents unexpected breakdowns in navigation and prolongs the useful life of the adjacent elements it protects.

Equivalent manufacturer part numbers