Really depends on the fuel and "cleanliness" of that fuel.
There are two filters.......both the same micro rating - one before the pump and one after the pump.
The one before the pump - change it .....go ahead and get under there and do it ! The one AFTER the pump, could be over looked but.....
Personally I would get under the tractor - take the first filter off, allow what fuel you have in the tank to drain out - catch it in something clean.
Get you a 1/4 turn ball valve for diesel - can be found anywhere, 5/16(8mm) - place the valve on the hose, and then add a small piece of hose to the first filter......replace all filters why there = hook everything back up.
Open valve - turn key on for 30 seconds....you will hear the pump click, maybe funny noise at first then it will smooth out....this will pump the air out of the lines. Start engine .....maybe check for leaks.
here is an example :
https://www.amazon.com/Parts-Unlimi...f+valve&qid=1552657323&s=gateway&sr=8-1-fkmr1
by placing the cut off fuel valve in there ......next time the amount of spillage will be much less.