Step1: Turn off and unplug fryer; verify no voltage with tester; use insulated tools, allow cooling before service.
Step2: Remove access panel and open control compartment to locate old breaker; ensure safe access.
Step3: Label and disconnect two terminals carefully, note wiring positions; secure labels.
Step4: Install new SPST breaker, secure wiring to matching terminals, ensure tight connections match amperage rating.
Step5: Reassemble panel, restore power, test operation, check reset operation, run short safety check.