Carburetor For Troy Bilt Super Bronco Model 21A-644A711 Tiller Troy Bilt Super Bronco Model 21A-644A711 Tiller Shown In Pictures. 2 Year Replacement Warranty! Note Your Carburetor May Have A Plastic Fuel Inlet And This Carburetor Has A Metal One. Either Way This Is The Correct Replacement Carburetor And Will Bolt On And Run Great! Replace your carburetor if your machine starts up on choke then dies, if it starts with starting fluid then dies or if it needs choke on to run. It’s also a good idea to replace your fuel and clean out fuel lines. Most Problems With Equipment Not Running Or Having a Hard Time Running Is Due To Carburetor Problems. NOTE: Check the appearance, size, shape of this item in our picture and compare with your original one before buying. Generally, we will send the same item as our picture shows. If You Are Not Sure If This Is The Right Part For You Equipment Email Us Your Model Number And Or Engine Number With 2-3 Pictures And We Will Look It Up For You. Includes 1 New Carburetor For Troy Bilt Super Bronco Model 21A-644A711 Tiller. In House Experts: We Know Are Products!