How to Inflate Tires
Remove the valve cap
With the lever folded flat against the pump insert the valve into the Schrader port of the pump
Lift the lever so it is perpendicular to the pump body this will lock the pump and valve together
Pump the pump until the tire feels firm
Fold the lever against the pump body and quickly remove the pump from the valve
Measure the pressure with a tire pressure gauge
If the pressure is less than desired repeat steps 2 thru 5
If the pressure is above the desired pressure release some air and recheck it with the gauge
As a side note the more you use the pump the closer you will be able to judge the pressure by the effort required to push the pump