1. Turn off the water supply, then use tools to open the logo above the faucet and unscrew the screws inside.

2. Remove the handle, and then turn the valve core in the direction of opening the faucet until the valve core is removed and put aside.

3. Remove the screw that fixes the sealing ring, and then buy a new sealing ring to replace it.

4. Restore the faucet parts and test that if the faucet still leaks after closing, it needs to be replaced with a new faucet. If there is no water leakage after the faucet is turned off, the installation is qualified.