Step1: Turn off gas and electrical power to the fryer before servicing.
Step2: Allow fryer to cool completely to avoid burns.
Step3: Remove burner access panel to reach the high-limit assembly.
Step4: Disconnect old thermostat wiring from terminals.
Step5: Remove faulty LC117 thermostat from mounting bracket.
Step6: Install new fixed hi-limit thermostat in correct position.
Step7: Reconnect wiring securely and ensure proper grounding.
Step8: Restore gas and power, then test fryer operation to confirm better automatic cutoff at over-temperature conditions.