My YTH 2448 runs & mows good until fuel filter empties the first time, then it doesn't seem to pick up enough fuel again to keep it running. What's the problem?

Hi,
First guess is that the fuel filter is clogged at least enough to restrict fuel flow adversely. Second guess is that there is a problem with the fuel pickup in the gas tank.
Peace,
Clarke

My guess too.

Hi,
Left out the plugged gas cap vent, as well.
Peace,
Clarke