Step1: Disconnect electrical power and shut off the gas supply to the appliance.
Step2: Remove the control panel and disconnect the existing thermostat wiring.
Step3: Carefully remove the sensing bulb, capillary tube, dial, and mounting hardware.
Step4: Install the new thermostat and secure the dial plate in position.
Step5: Route the capillary tube along the original path, avoiding sharp bends.
Step6: Mount the bulb in its holder and reconnect all wiring.
Step7: Restore power and gas, then test temperature settings and thermostat operation.