Step1: Disconnect power and gas supply, and ensure griddle is completely cool before servicing.
Step2: Remove front control panel to access thermostat assembly carefully.
Step3: Note wiring positions clearly and disconnect electrical leads carefully.
Step4: Unscrew mounting hardware and remove faulty old thermostat assembly.
Step5: Install new thermostat Assembly, secure mounting and reconnect wiring as labeled.
Step6: Reassemble control panel, restore power, and test temperature calibration for safe operation.