Yamaha - Reed valve asy - 6E5-13610-00-00Yamaha Reed Valve Assembly Intake System Component 6E5 13610 00 00 Overview If youve worked on two stroke Yamahas, you know the reed valves are what keep the engine breathing right. This assembly controls how fuel and air move into the crankcase, and when its not sealing properly, performance drops off fast. Youll usually notice it in rough idle, poor throttle response, or hard starting. A solid reed valve assembly brings that crisp, responsive feel