Yamaha - Carburetor assy 3 - 688-14303-40-00Yamaha Carburetor Assy 3 Fuel Delivery Component 688 14303 40 00 Overview If your Yamaha is starting to idle rough or hesitate when you get on the throttle, the carburetor is usually where things start to break down. Ive worked on plenty of these where cleaning only goes so far, and a full replacement is what really brings the engine back. This assembly helps restore that smooth, predictable feel when youre running or coming up on plane. Once its in