Yamaha - Oil Pump Cover Engine Protection Component YF1-52713-51-30. Overview. When you're inside a Yamaha engine, protecting the small but critical components is just as important as maintaining them. I've seen oil pump areas get compromised from debris or improper sealing, and it doesn't take much to cause bigger issues down the line. The Yamaha Oil Pump Cover YF1-52713-51-30 helps keep that section sealed and protected so everything inside can do its job. It's a simple part, but it plays a bi