Well that is interesting. The tank had a hole in it and there is some gunk all over the tank that was use to repair it. The repair looks OK though. The cap will not allow air through it. The seal at the tank for the fuel lines is good. There is no primer bulb (though it wasn't working when there was one). I am off to the mower shop for new fuel lines and primer bulb. The tip is closed until Thursday so I can't get a fuel tank or carby.