I have the craftsman simpul 32cc weed wacker model #358.791070 and I can't get it to start. I have been looking it over and there is some(not enough to make it drip) fuel on the black cover below the carburetor but I don't see any leaks when I take the carb off. It does not even turn over when I pull so I am not sure if it is spark (I have not yet tried to change the plug) or what. Do you have any ideas?