I do not know for sure but I assume like tractors it has a knob near the seat that restricts the flow of oil out of the 3 point arms lift system , could the knob be turned in all the way?
My 20 hp tractor had no fuel gauge but had the access hole for one, I bought a universal marine fuel tank gauge kit so it came with 2 inch gauge and sending unit. works great just trim float stem to what instructions say to cut to that type and shape tank.
I was thinking that since that tractor does not have a loader coming up with something that would go on those loader mounting holes ,possibly next to the side the starter is on. Maybe going to a smaller battery it has a group 31 on it now and it is only 20 hp. But it does turn over ok when it is cold here with that 31 on there.
I called Tommy today and the battery relocation kit is Jinma specific, so I will have to make something for myself it overheating becomes a issue. Just a FYI