Ryobi Propane/Natural Gas Generator Conversion- Motor Snorkel Kit MotorSnorkel installs within Minutes - The easiest kit on earth. US Patented 8,448,924 Easily Convert Your Gasoline Generator to A Tri-Fuel Hybrid Generator. Will run on propane and natural gas but does requires additional accessories that must be purchased separately After simply replacing the air filter gasket with the SNORKEL, and adding the propane fuel delivery parts, your generator can run on Propane and or gasoline. Switch back and forth. No drilling of the carburetor or adding any spece inside the cabinet. Won't void your generator's warranty like all other kits may!!! Kit includes Motor Snorkel, engine fuel control regulator with mounting hardware, fuel calibration block, and instructions and lifetime tech support. Just add propane or natural gas hose and fittings.