That's one of the reasons that I have wanted to find an older (especially per-emissions) Kubota diesel 4x4 tractor.
Just reading back through here…
You don’t have to look that old to find a pre emission Kubota in the size of tractor you are looking at in B7100. All of the current models in the B series have “no” emission equipment on them except the B3350 (which I would avoid) and the current LX3310 which replaced the 3350.
All BX models even up to current production ones have “no” emission. Only mention this model as the 7100 to me seems to be between the current B and BX size wise (Im no expert on anything Kubota lol)
The basic L series has one model still in current production (L2501) that is “no” emission. The L I have is the last model before they went to emission equipment on the 01 series above 26hp (I think thats the cut off currently)
Grand L, I wont attempt lol, but I think its getting out of the size you are looking at.
Just posting this in reference to that one comment specifically. I understand there are budgets (which isn’t my business) and given your location, the availability. Just wanted to be aware you don’t need to look old to get pre emission.
note: “no” is in quotes because there is emission levels they still need to meet, but these models don’t have common rail fuel systems, DPF,DEF, etc that is the issue with buyers and newer tractors.