1. Open the kitchen window for ventilation and close the gas valve.
2. Fire to burn off the remaining gas in the hose and close the ignition valve.
3. Loosen the screw at the hose interface, remove the hose clamp and remove the aged hose.
4. Use the hose with the same length as the old hose, put on the hose clamp, connect the hose with the pipe, and ensure the alignment of the interface.
5. Tighten the throat clamp screws.
6. Check for air leakage with soapy water.
7. After the inspection, if there is no air leakage, open the valve in front of the stove to check whether the gas stove is in normal use.