The thermostat part is used to control overheating in your clothes dryer. If your clothes dont dry properly, the dryer wont shut off, or you find it overheats, replacing the thermostat can be a solution to this problem. Make sure that the wires connected to the thermostat are removed by pulling on the connecters and not necessarily the wires themselves. The only tool needed for this is a pair of pliers. For safety, make sure to unplug the dryer from the power source before starting this project. Refer to the diagram and installation instructions provided by the manufacturer for further guidance.