Yan-Mar Fuel Injection Pump

This video explains the main functions and practical uses of the Yanmar 729236-51412 Fuel Injection Pump in a clear, step-by-step format. You'll see how this OEM high-pressure diesel fuel supply assembly works with Yanmar 3TNV88 X3 engines in mini excavators, construction machinery, and generator sets. We demonstrate how it controls fuel delivery volume and injection timing for stable operation, complete combustion, and solving common engine issues like difficult cold startup, unstable idling, and excessive fuel consumption.