2. Close the gas valve to ensure that the gas terminal is closed.
3. Remove the old decorative cover. If the decorative cover is fixed on the gas terminal, unscrew it with a wrench. If the decorative cover is snap-type, press the snap to open it, and then gently break it open.
4. Align the new decorative cover with the gas terminal. Ensure that the size and shape of the decorative cover match the gas terminal.
5. Fix the decorative cover. If the decorative cover needs to be tightened and fixed, use a wrench to tighten the decorative cover to a suitable position. If the decorative cover is snap-type, press the snap to make it close to the gas terminal.
6. Ensure that the gas terminal is normal. Open the gas valve to ensure that the gas terminal works normally, and check whether the decorative cover is loose or leaking.