re: fuel screen . Fits in the neck of the tank to keep the 'rocks and chickens out'. Some use mason jar cold brew coffee filters( cheap in USA...) , I use a $store 'sink strainer'...
re: ballast. If you're cutting grass you generally do not want ballast( or the loader....). ballast solution is to add a 'carryall' to the 3PH. You make a box for a skid, fill with heavy stuff, backup and lift skid, then do loader work. When done, lower 3PH, slide off skid of weight. Tractor's happy, you're happy.
re: HST fan. Since 2018 they've had factory installed guards. I thought about the 'under belly armour' but from the pictures some use the MMM lift parts to attach ! designed my own version, never installed. been all over the neighbour's properties(yes, you CAN bet a TLB stuck.....), ZERO damage to the HST fan. BTW MMM would make a good 'armour plate', just low to the ground.....
re: front axle. yes, 99.44% of them are LOW in oil....
re: greasing. Buy a new 'dedicated' grease gun and always START with the Zerk under the floor mat for the foot pedal.
re: pallet forks. BEST option you can buy !! I use them 50% of the time. TRICKY to get used to as the loader controls aren't smooooooth like my forklift.,but you'll get better over time.
re: 'making the deal'...get dealer to toss in the '50 hour' inspection/fluid changes. That's the most important one so if HE screws up, HE owes you a new tractor......
re: filters. Buy 2 air filters and 2 fuel filters. Depending on conditions, the air filter can get dirty real quick ! Always nice to have a clean spare on Sunday afternoon.....