Before using your pump, identify the valve type. The typical valve types are:
Presta Valve: This valve is found on many road bikes and high end bikes. It has a much narrower diameter and is generally taller than a Schrader Valve. A Presta Valve requires a small nut to be loosened. Described further below.
Schrader Valve: This is the same type found on most car tires. It is generally shorter and has a larger diameter than a Presta Valve.
Using the Pump:
1. Remove any plastic caps from the valve. For Presta Valve, make sure to unscrew the small nut at the top of the valve as shown.
2. Check the pump head and make sure the lever is centered between the two sides of the head as shown.
3. Attach head to valve:
a. For Schrader, use the black side of the head.
b. Push the head of the pump onto the valve using moderate force. If there is air in the tube the head may start releasing some air.
c. While pushing the head onto the valve, move the locking lever on the head away from the valve. The small white arrow should point at the valve.
a. For Presta, use the grayside of the head. Double check that the small nut has been unscrewed and the pin can be depressed. If there is air in the tube, pressing the pin down will release air. The pin will also be pushed back up when you remove your finger.
b. Push the head of the pump onto the valve using moderate force until you reach a point where it cannot be pushed any further. If there is air in the tube the head may start releasing some air.
c. Move the locking lever on the head away from the valve. The small white arrow should point at the valve.
4. Pump to desired pressure.
5. To remove head from the valve, return lever to center position and carefully pull head straight off the valve.
6. For Presta Valve, after removing pump head, make sure to close the valve by turning the nut clockwise until snug.
7. Replace any plastic caps that were removed.