Yamaha - Fuel Pump Assembly Fuel Delivery System 63P-24410-20-00. Overview. A healthy fuel system is what keeps a Yamaha outboard starting easy and running strong. The Yamaha Fuel Pump Assembly 63P-24410-20-00 is built to deliver consistent fuel flow from the tank to the engine, helping maintain smooth throttle response and dependable performance on the water. When fuel pumps start to weaken, you'll often notice hesitation or power loss, especially under load. Installing a genuine Yamaha pump br