They take quite a bit after sitting to get fuel to float bowl.I usually find the vacume line to the petcock,and the fuel line.disconect,suck on vac see fuel flow,if flowing replace fuel line give it aother blow job to fill the bowl.Carb is probly tarnished,but you might be suprized,I'v had all mine running within 15 min.not always well but running,then the fun begins!