Yamaha - Nozzle Holder Assembly Fuel System Component YF1-60015-30-02. Overview. When you're dealing with fuel delivery on a Yamaha, everything has to be tight, clean, and properly aligned or you'll feel it in how the engine runs. I've seen small mounting components like this cause uneven spray or performance issues when they wear out or loosen up. The Yamaha Nozzle Holder Assembly YF1-60015-30-02 keeps things secured where they need to be so fuel delivery stays consistent. It's one of those beh