* Radiator: Make sure the radiator is clean and free of any debris. A clogged radiator can restrict the flow of coolant and cause the engine to overheat.
* Coolant: Check the coolant level and make sure it is at the proper level. If the coolant level is low, it can cause the engine to overheat.
* Thermostat: Make sure the thermostat is opening and closing properly. A faulty thermostat can prevent the coolant from circulating properly and cause the engine to overheat.
* Water pump: Make sure the water pump is circulating the coolant properly. A faulty water pump can cause the engine to overheat.
* Fan: Make sure the fan is working properly. A faulty fan can cause the engine to overheat.
* Head gasket: Make sure the head gasket is installed properly. A faulty head gasket can cause the coolant to leak and cause the engine to overheat.
If you've checked all of these things and the engine is still overheating, you may need to take the tractor to a mechanic for further diagnosis.