Report "I have an 8hp Tecumseh engine on my Ariens Sno-Thrower Model 924040. The Carbueretor leaks gas through the choke plate opening which is under the heater box cover. The number 510121 2 is on the fuel-air manifold that goes from the carbueretor to the cylinder. A float, bowl and carburetor kit were installed in 2005, and the engine worked fine from 2005 until now"