If it never runs hot on other chores your tractor likely runs hotter while mowing because it is being run in too high of gear and/or too low rpms.
The price of live data reader will be returned several times over through prevention of engine damage and extended life. When live data reader shows temperature going up you can take some load off engine until temp drops back to normal. When live data on my trucks show temperature going up downshift to lower gear with increased rpms always brings temp right back down. Any experienced semi mechanic will tell you more diesels are killed by running hot than everything else combined. It requires an experienced ear to detect when diesel begins to labor. Cruise control has allowed trucking companies to show drivers how to hold the wheel and let computer handle throttle and gears. Were it not for killing new tractor sales and dealer repairs compact tractors would have computer controlled drive trains.
I am using a new to me 3pt finish mower this year, so still figuring out best way to mow with it and my BX2200.
I really haven't done anything to the tractor cooling wise the last 3-4 years except making sure the coolant level was good and looked clean because it always ran in the normal range.
A few things I am gonna do before digging any deeper.
1. I purchased a longer air wand for my compressor. Gonna blow out the radiator and air screen to make sure it has optimal air flow.
2. Coolant looks clean, but it also looks like straight coolant. Gonna drain some and add distilled water to transfer heat more efficiently. I have used products like Water Wetter in my track cars before to help with heat transfer.
3. Probably replace the radiator cap since it is cheap/easy. Make sure it is pressurizing the way it should.
If these don't change anything then I will look at the thermostat and water pump. I will probably inspect the water pump belt too.
