This is a new carburetor rebuild kit with instructions and trouble shooting information. This kit comes with all gaskets and with No stick needle valve kit, which the original ones didn't come with. This makes it easy to start. 1-2 pulls usually. The original carbs on the snorunner had a problem where the needle gets stuck shut or open pouring fuel into the engine. Kit comes with the Brass needle seat, Most kits don't come with it. This kit fixes that problem.