The engine dies after running the mower for 30 - 45 minutes. I have replaced the fuel cap with an original one, fuel line, air filter, fuel filter, fuel pump and hose that leads to the fuel pump form the valve cover. It just plain runs out of fuel because you can see inside of the fuel filter. The only thing I have not done is check the valves and replace the cover gaskets. ANY HELP??

Have you checked the fuel pump on the side of the housing?

There is only one fuel pump and it does have some suction. Oh, and I also cleaned the tank out and put in new fuel.