Step1: Disconnect electrical power and ensure the oven is fully de-energized before servicing.
Step2: Remove the control panel to access the existing timer assembly.
Step3: Carefully disconnect all wiring terminals from the old timer, labeling each for correct reconnection.
Step4: Remove the mounting hardware and pull the defective timer out of the panel opening.
Step5: Install the new timer, aligning the shaft with the control knob and securing it firmly.
Step6: Reconnect wiring, reinstall the panel, restore power, and test full rotation and shutoff function.