Not a bad little tractor. Beginning to show its age. Largely reliable, though hard to know where the fault lies, previous owners lack of maintenance or the tractor. I suspect lack of maintenance.
Not easy to find all the parts, 275/250/414 seem easier to find parts for. Look for nosecone, seat, injector pump, if these are stocked then you have a good supplier.
Front kingpins seem to be tight and better oiling than greasing. Access to parts is reasonably easy, wiring less so. Have a good battery and heater plugs, you will need them for cold and warm starts. Front end is a little light when pulling or lifting much weight.