Beautiful Yanmar Ben,
Fairly certain the PTO HP is 23 and the engine around 27-28 HP. The model is so new that there aren't that many available and information is, at best, sketchy. You can remove the filters and have them physically matched up using a good parts counter person that has the patience. You might also have a spin on hydraulic filter on that model...I'm just not sure.
The only person that is very familiar with these "F" and "FX" models I'm aware of is Tractor Ernie of ErniesImports.com. This gent seems to be light-years ahead of the rest of the U.S. dealers concerning the F series tractors...Maybe our own Mickey will spot your post and help out.
Personally, I wouldn't hesitate to buy an F series tractors an they are imported with very low hours but retain the reliability as is typical with the Yanmar brand. Expect nothing less than decades of service from this tractor and when you do need a part they will be much more available.
Mark