Replacement Parts: High quality CNC machined KIPA carburetors. Replaces OEM 277-62301-30, 62302, 62303 and Mikuni 277-62301-50. Compatibility: Replaces carburetors on generators/garden machinery etc. of the Robin Subaru EX17 engine series. The best advice for anyone is to not use E85 fuel and to flush it at the end of the season. Package Includes: 1 New Carburetor, 3 New Mounting Gaskets, 1 New Fuel Filter, 1 New Carbon Dirt Jet Cleaning Kit (for future carburetor maintenance) Easy Installation: Starts right up, no surging or popping, no instructions needed. You can also look for videos online that explain how to do it. Also, make sure to perform monthly maintenance when the generator is not in use. in use. If you do the same with your old RV, you will be fine. This carburetor is a direct replacement for your MIKUNI carburetor. The only thing that needs replacing is one of the two gaskets that are between the carburetor and the air filter housing. Just fill up with fuel and the engine