1.     The installing position of the air filter should avoid the dust highly centralized so that it can reduce the working load of air filter and reduce the frequency of maintenance

2.     Wet-type air filter, it needs to add appropriate oil before the assembly trail run. When using the filter, it should check whether the oil level inside the oil pool reaches the mark

3.      When maintaining Dry-type air filter, it needs to take out the element and tap the end tightly. At the same time, it can use the brush to clean the dust surface

4.     When dismantling the sealing gasket of the air filter, take care whether it is ok. If the surface of the sealing end is damaged, it needs to be replaced timely.

5.     If the engine power is not sufficient, the fuel digest increased obviously or the exhaust smokes, it should check whether the air filter has blockage.