Hope this helps,
I did not see this eariler post before posting my own overheating problem.
The thermostat in my 4110 is marked 71 degrees centigrade which is approx 160 degrees fahrenheit.
My tractor used to run normally at about 170 degrees before I developed the problems I am trying to track down. It would run at arround 170 regardless of how I was using it and only on 90+ degree days would it get up to 180. I would rinse out the radiator about every 10 hours. The radiator on mine will clog up at the drop of a hat.
I can be sure of the temps becasue the dash temp gauge and fuel gauge crapped out so I installed a mechanical temp gauge and a wooded stick for the fuel.