Yamaha - Float Chamber Assembly Carburetor Component 6CJ-14180-12-00. Overview. On carbureted Yamaha setups, the float chamber is what keeps fuel delivery steady and predictable. If it's not working right, you'll notice it in rough idle, hesitation, or inconsistent running. I've seen engines smooth out completely just by fixing issues in the float chamber. When it's dialed in, fuel levels stay balanced and the motor runs clean across the throttle range.. Key Features. • Consistent Fuel Level Control - Maintains proper fuel levels within the carburetor for stable operation.• Smooth Engine Response - Supports steady fuel delivery to reduce hesitation and uneven performance.• Durable Chamber Construction - Built to handle fuel exposure and continuous engine use.• Reliable Float Operation - Helps regulate fuel flow accurately during varying engine demands.• Factory-Spec Fitment - Designed to match Yamaha carburetor systems for proper installation.. Engine & Boat Compatibility. Designed for