Yamaha - Carburetor Assembly 1 Fuel System Component 6L2-14301-02-00. Overview. When a motor starts running rough or doesn't respond cleanly on throttle, the carburetor is usually the culprit. Over time, internal wear and buildup make them unreliable, no matter how much you clean them. I've swapped out plenty of these and the difference is immediate-steady idle and smooth acceleration. It's one of those parts that just brings the engine back to life when everything else checks out.. 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 withstand 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 uneven running.. Engine & Bo