YAMAHA INJECTOR 63P-13761-01

Function and technical context

The injector is a fundamental component of the fuel delivery system in Yamaha four-stroke engines. Its mission is to spray and atomize the fuel in the combustion chamber with the necessary precision to ensure optimal mixing with air and efficient ignition. It works under electronic control of the engine, injecting exact doses of petrol at the precise moment of the compression cycle. A defective injector compromises combustion, reduces available power, increases fuel consumption and increases polluting emissions, significantly affecting navigation performance and reliability.

When to replace this part?

Symptoms of failure include gradual loss of power, difficulty starting from cold, irregular engine running, jerks during acceleration and abnormal increase in fuel consumption. Although modern injectors have an extended lifespan, they should be inspected during each seasonal check and professionally cleaned if carbon deposits are detected. The preventive replacement of injectors prevents sudden breakdown while cruising and guarantees optimal engine operation throughout the sailing season.

Equivalent manufacturer part numbers