Yamaha - Oil Pump Assembly Engine Lubrication System 63P-13300-02-00. Overview. If you've been around Yamaha outboards for a while, you know oil delivery is what keeps everything alive inside that motor. When the pump starts to wear out, it doesn't take long before you notice changes in how the engine sounds and runs. The Yamaha Oil Pump Assembly 63P-13300-02-00 is one of those parts you replace to keep things running smooth and protected. It's a straightforward component, but it plays a big rol