One of the important procedures for the internal combustion engine of any care - is the control of the air filter condition. The air filter plays an important role not only in faultless operation of the engine, but also on its state depends on the service life of your equipment. If the air filter is dirty, then the power system will get an insufficient quantity of air, which affects the composition of the fuel mixture. As a consequence the cylinder falls enriched fuel mixture and as a result, at a minimum, can fail spark plug. If the air filter is warped or even torn, then the cylinder gets dust, sand, etc., all this abrasive, as a result - failure of the piston (rings, piston, cylinder) and timing systems (valve). Therefore, in this article we look at the minimum action for filter maintenance.