Step1: Turn off the gas supply and allow the unit to cool completely before servicing.
Step2: Pull the damaged valve knob straight off the gas valve stem or remove retaining screw if installed.
Step3: Inspect the valve stem for grease buildup, cracks, or damage before installing the new knob.
Step4: Align the flat side of the new knob with the valve stem and press firmly into place.
Step5: Secure retaining screw if applicable and confirm smooth operation.
Step6: Restore gas supply and test knob movement for safe, proper control.