Yamaha - Carburetor Assembly 1 Fuel System 6E5-14301-17-00. Overview. When a Yamaha starts running rough, nine times out of ten it comes back to the carb. I've seen plenty of these small outboards come in with clogged or worn carbs that just can't meter fuel right anymore. Swapping in a complete assembly like this saves time and takes the guesswork out of rebuilding. Once it's on and dialed in, the motor usually settles right back into a smooth idle and clean throttle response.. Key Features. Precise Fuel and Air Mixing - Delivers the correct ratio for smooth combustion and consistent engine performance.. Complete Assembly Design - Comes ready to install, eliminating the need for internal rebuilds or adjustments.. Marine-Grade Durability - Built to handle vibration, fuel exposure, and harsh on-water conditions.. Reliable Throttle Response - Helps restore clean acceleration and stable idle across operating ranges.. Engine & Boat Compatibility. Designed for Yamaha 2-stroke outboard engin