that adapter is for a Tecumseh engine. don't think it will work for a Briggs. you might not even need it? do they even have floats in them? I've never had a bike with a Briggs so I don't know anything about them! not for nothing, there some people who say you don't really even need it for the Tecumsehs? that they'll run at a slight angle. mine wouldn't stop leaking, and ran like crap. seemed to work fine after I put the adapter on..... :shrug: