I am rebuilding a Tecumseh H35 and ordered parts almost 2 months ago from a large on-line supplier. The order was delayed because they were waiting for the above-mentioned exhaust valve from the manufacturer. I was informed today that they can supply all of the other parts I ordered but will not be able to get an exhaust valve for me. Once I knew that I went to my local dealer and he did not have the valve either. Does anyone know where I can get a standard exhaust valve for an H35. It doesn't seem to be that it should be this much trouble to get this part.