when the engine working, it will absorb a lot of air, if the air is not filtered, the air suspended dust was sucked into the cylinder, it will accelerate wear the piston group and cylinder. larger particles entering between the piston and the cylinder can cause serious "pull-cylinder" phenomenon, which is particularly serious in the in the dry and sandy environment. the air cleaner installed in front of the carburetor or air intake, to filter out dust, sand, and to ensure that there are sufficient and clean air in the cylinder.
