Only things that can go wrong on these tractors are some easy replaceable, relatively cheap parts. The replacement parts are of improved quality and fitted with these, there's actually nothing to worry about.
Its clutch and brake master cylinders (subcontractor PAL used poor cylinder lining- Fragokov makes the new, better cylinders) about 70 Euro each.
water pump: 125 Euro, new ones have bearings with improved "greased for life"
gear selector lever: sometimes causes trouble (double shifts), with 20 euro modification kit it never happens again