Yamaha - Float Chamber Body Carburetor Fuel Reservoir 6EK-14181-00-00. Overview. When you're dealing with carburetors, the float chamber is where everything settles before fuel makes its way into the engine. I've seen cracked or warped chambers cause all kinds of headaches-leaks, poor idle, or inconsistent running. This piece holds fuel at the right level so the rest of the system can do its job. When it's sealed up right, the motor runs steady and predictable like it should.. Key Features. • St