How does the giant xtc777 cheer up?

Giant xtc777 is the inner tube of French gas valve. If you want to pump up the road car, you must first prepare a special air pump for the French gas valve. The pumping steps are as follows:

1. Remove the dust cover on the air valve counterclockwise.

2. Turn on the air valve switch on the valve counterclockwise.

3. The special cylinder of the valve is connected with the air nozzle.

4. Inflate according to the specified air pressure of the tire.

5. Remove the cylinder from the gas nozzle.

6. Lock the air valve switch clockwise.

7. Tighten the dust cover of the air valve clockwise, and the air extraction is over.