1. Be sure to carefully check whether the correct type of valve stem is used before use
2. Appropriately apply tire moisturizing cream or other lubricating cream to the lower part of the selected valve stem to reduce the resistance during installation
3. Gently pull out the lubricated valve stem from the special hole of the rim with a valve stretching installation tool
4. Install tire inflation, lightly tap a little water on the air inlet of the valve stem to check whether the valve stem is leaking. If there is air leakage, use the valve core key to gently tighten the valve core