PISTON RINGS STD YAMAHA 6K5-11601-02

Function and technical context

The piston ring is an essential component of the internal sealing system of the Yamaha engine, responsible for maintaining tightness between the piston and the cylinder walls during compression and expansion cycles. This ring prevents the leakage of combustion gases into the oil pan and reduces engine power loss, guaranteeing optimal working pressure in the combustion chamber. Its progressive wear causes decreased performance, excessive oil consumption and increased polluting emissions, so its timely replacement is essential to maintain the efficiency and longevity of the marine propeller.

When to replace this part?

The piston rings show gradual wear after hundreds of hours of operation, manifesting with loss of engine power, bluish smoke in the exhaust, abnormal increase in the oil level in the crankcase and difficulty in maintaining stable revolutions at idle. It is recommended to check its condition during each seasonal maintenance and consider its preventive replacement during a general engine inspection or when symptoms of compression leak are detected; This intervention prevents secondary damage to cylinders and pistons that result in significantly more expensive repairs.

Equivalent manufacturer part numbers