How to adjust the air pressure of automobile air pump?

How to adjust the air pressure of automobile air pump: 1. There is a small hole (with a red button) on the air pump control box, and the air pressure of the air pump can be adjusted by adjusting the screw inside with a screwdriver;

2. The method of looking at the numerical value of the vehicle-mounted air pump: first look at the unit, the bar can dial 2.4 and 2.8, the PSI can dial 35-40, and the KPA can dial 240-280. If there is an M key, set the preset value, then start dialing, and stop when it hits the preset value;

3. If you don't have a preset, call directly, look at the value, and stop when you arrive;

4, 2-3 has a red line, the tire pressure of a normal car is between that, and the pointer can stop in the middle. This is not good, it is better to set the number.

Million car purchase subsidy