How to Use a Portable Car Air Pump?

[DelChristian]

Insert the rubber hose nozzle directly into the tire valve. When you hear the sound of air escaping from the tire, it indicates that air is flowing. Tighten the inflation knob. Connect the red clip to the positive terminal of the battery and the black clip to the negative terminal, or plug it directly into the cigarette lighter for power. Turn on the motor to start inflating. During inflation, the gauge needle will rise with the increasing air pressure. When the main needle reaches the appropriate tire pressure for your car, turn off the air pump switch and remove the plug and nozzle.