I have had this tractor for years, about 2 years ago the hour meter quit on me. Then I was having problems with my glow plugs coming on. I have checked all the fuses, new battery and still I can get it to start with starting fluid on a warm/hot day. I notice that the engine does not run very fast, so I checked my battery cables, could I have a bad starter? It comes on but turns slow, when I jump it off I can feel the jumper cables get hot so I know it is drawing current. Also there is a elect box on the left side of the engine that growls/humms at me sometimes. I think I need to find out what is causing my dash not work before I go on but I am not sure what is could be, where could I get a elect schematic?