Tractor will run for about 1/2 hour and then shuts off ~ then starts back up runs about 5 seconds and shuts off ~ if let set it will run again for another 1/2 hour and shut off again
I'm not familiar with that tractor, but the symptoms are consistent with fuel restriction. Plugged filter(s)? plugged fuel line? trash in tank/lines?
If you take the first fuel filter off, does fuel run out of the line?