Yamaha - Reed Valve Assembly Intake Air Control System 6E8-13610-01-00. Overview. When a two-stroke isn't running clean, I always think about the reeds early on. I've seen engines with rough idle or sluggish throttle come right back to life after replacing a worn reed valve assembly. This is what controls how air and fuel enter the motor, so it has to react quickly and seal tight. When it's working right, the engine feels crisp, responsive, and easy to start.. Key Features. • Complete Reed Valve Assembly - Provides a full unit for consistent airflow control and easy replacement.• Efficient Airflow Regulation - Helps manage intake flow for proper combustion.• Responsive Reed Operation - Designed to open and close quickly under engine demand.• Durable Reed Materials - Built to withstand repeated flexing and long-term use.• Exact Yamaha Fitment - Matches factory specifications for proper sealing and performance.. Engine & Boat Compatibility. Designed for Yamaha outboard engines utilizing