Yamaha - Fuel Cock Assembly Fuel Shutoff Valve 6E0-24500-01-00. Overview. The Yamaha Fuel Cock Assembly 6E0-24500-01-00 is what controls the flow of fuel from the tank to your engine. It's a simple part, but when it starts to wear or clog, you'll notice it quickly-fuel starvation, hard starts, or inconsistent running. This valve lets you shut off or regulate fuel flow when needed, making it an important piece for both operation and maintenance. If your engine isn't getting steady fuel, this is one of the first components worth checking.. Key Features. • Fuel Flow Control - Allows you to open, close, or regulate fuel supply to the engine.. • OEM Fit Precision - Built to Yamaha specifications for proper sealing and reliable operation.. • Prevents Fuel Leaks - Helps maintain a secure shutoff when the engine is not in use.. • Durable Construction - Designed to handle fuel exposure and marine conditions.. Engine & Boat Compatibility. Verify compatibility with your specific Yamaha engine mod