1, air filter. The engine has to suck in a lot of air during operation, if the air is not filtered, the dust will accelerate the wear of the piston group and the cylinder. Larger particles enter between the piston and the cylinder, which can also cause serious cylinder pulling. The role of the air filter element is to filter out the dust and particles in the air to ensure that sufficient and clean air is entered into the cylinder.

2, gasoline filter. The function of the gasoline filter is to provide clean fuel for the engine and filter out the moisture and impurities of the gasoline. Thus the engine performance can be optimized. It also provides protection for the engine. When the car is maintained, the operator will do other checks according to the specific situation of the car, and other maintenance items will be added, such as the inspection and cleaning of the engine-related system, the positioning inspection of the tire, the inspection of the fastening parts, and so on.