Tire valve check

1. Unscrew the dust cap of the valve.

2. Moisten the faucet with water or saliva. If bubbles form, screw on the valve with the back of the dust cap.

Attention! Only the metal dust cap can be used to tighten the valve.

3. Check the valve again. If bubbles form again and the valve no longer closes, replace it.

4. Always screw on the dust cap.