CORREA DISTRIBUCION REC6CB-W4624-00

Function and technical context

The timing belt is the fundamental timing element of the valve train in high-performance Yamaha engines. This part transmits the movement of the crankshaft to the camshaft, ensuring that the intake and exhaust valves open and close at the exact moment required for efficient combustion. Integrated into the variable distribution system, it supports intense operating cycles in vessels, subjected to constant tension, vibration and temperature variations typical of the marine environment. Its wear or breakage compromises engine timing, causing loss of power, abnormal vibrations and risk of serious internal damage to the valves and pistons.

When to replace this part?

Although the symptoms of wear on the belt may be silent, it is advisable to inspect it during each seasonal maintenance and replace it preventively between 200 and 300 hours of operation, depending on the conditions of use and the visual condition of the rubber. Cracks, frayed edges, loss of flexibility or irregular noises coming from the upper crankcase are indicators of aging. Performing the change preventively during winter maintenance or before intensive navigation seasons avoids unexpected breakdowns at sea and prolongs the useful life of the engine.

Equivalent manufacturer part numbers