YAMAHA VALVE PUSHER 6EEE21530000

Function and technical context

The valve tappet is an essential component of the valve train in Yamaha engines, responsible for transmitting camshaft motion to the valves to ensure their precisely timed opening and closing. This element works inside the cylinder head, supporting continuous mechanical stress and high temperatures during engine operation. Its correct performance is essential to maintain the tightness of the combustion chamber, preserve engine compression and ensure optimal performance of marine propulsion.

When to replace this part?

Valve tappets wear progressively from continuous friction and can develop excessive clearances, detectable by metallic noises in the cylinder head, loss of engine compression or starting difficulties. It is recommended that this component be inspected during each seasonal maintenance check, especially on engines with heavy or prolonged use. Preventatively replacing the tappet prevents secondary damage to the valves and seats, which would result in considerably more expensive repairs and extended periods of out-of-service.

Equivalent manufacturer part numbers