Yamaha - Carburetor Repair Kit Fuel System Service Kit 6H3-W0093-02-00. Overview. If you've been working on Yamaha outboards for any length of time, you know carburetors don't stay perfect forever. Between fuel quality and regular wear, they eventually need a rebuild to keep things running right. The Yamaha Carburetor Repair Kit 6H3-W0093-02-00 is what you use when the engine starts idling rough or losing that clean throttle response. It's one of those jobs that, when done right, makes the motor