YAMAHA CIRCLIPS 6R5-11634-00 REC6R5-11634-00

Function and technical context

The circlip is a fundamental mechanical retaining element in the transmission assemblies and axial fixing systems of Yamaha marine engines. This snap ring sits in machined grooves in the shaft or housing, exerting radial pressure to keep components in their correct position during operation. Its correct condition guarantees the structural integrity of the transmission system, avoiding axial displacements that could cause loss of gear, abnormal friction or drive chain failures. Any deterioration or fatigue in the circlip compromises the alignment of the internal components, leading to vibrations, abnormal noises and eventual engine seizure.

When to replace this part?

Circlips should be inspected at each seasonal maintenance, particularly after wear on related shafts is detected or after repairs that have required disassembly of the gear train. Symptoms of deterioration include intermittent metallic noises coming from inside the engine, abnormal vibration of the propeller, or undetectable lateral movement in components that should be fixed. Preventive replacement at major overhauls avoids costly offshore alignment problems and prolongs the life of the complete transmission assembly.

Equivalent manufacturer part numbers