Step1: Shut off appliance power and gas supply; allow unit to cool completely for safety.
Step2: Remove old thermocouple from pilot assembly carefully using proper tools.
Step3: Position new thermocouple in pilot bracket ensuring correct flame alignment as specified by manufacturer.
Step4: Secure mounting nut and route lead away from heat sources to prevent damage.
Step5: Reconnect to control module and tighten connections ensure secure fit.
Step6: Restore power and test pilot flame and millivolt output verify stable reading.