Yamaha - Carburetor Assembly 1 Fuel System Component 6L1-14301-05-00. Overview. When an outboard starts acting up-rough idle, hesitation, or just not running clean-the carburetor is usually where things break down. Over time, internal wear and buildup make them unreliable no matter how much you clean them. Swapping in a fresh Yamaha carburetor like this brings everything back to smooth, steady performance. It's one of those upgrades you feel immediately when the engine fires up and settles into a clean idle.. Key Features. Consistent Fuel Delivery - Provides steady fuel flow for smooth performance across all throttle ranges.. Pre-Calibrated Assembly - Built to Yamaha specifications for reliable operation right out of the box.. Durable Internal Components - Designed to handle fuel exposure and long-term marine use.. Factory-Spec Fitment - Ensures proper alignment and seamless integration with Yamaha engines.. Restores Engine Performance - Helps eliminate rough idle, hesitation, and unev