The main part replaced after a year in this machine is an ink tube in the pump. Maybe the air filter in the box, where the ink pumps are located, but it depends how dirty it is (remember that if you replace this filter, you need to check/calibrate the pressures in the ink system, especially negative pressure). If you use the wiper a lot, maybe the rubber blade. Other filters imho should be replaced, when it's needed.
Of course, I'm not giving you the suggestions from the yearly maintenance list (ask Fuji for the list, they should give you such document, it exists for sure).