Before starting the harvester, first fill it with oil and water according to the instructions, check if the battery is fully charged, check if the circuit is in good condition, and then check the tightness of the belt and its chain. If necessary, adjust according to the instructions; Open the back cover of the threshing section and check if the threshing teeth are excessively worn, if there are foreign objects blocking the agitator, and if the screen is damaged. If any problems are found, they should be cleaned and repaired in a timely manner; When inspecting the chassis, first use a jack to support the vehicle body, check the tightness of the tracks, swing the drive wheels and other wheels by hand, check for excessive clearance, and adjust and repair according to the instructions if necessary. Each lubrication part should be lubricated according to the instructions; The clearance between various parts of the harvester should be adjusted according to the instructions, such as the clearance between the moving blade and the fixed blade, threshing clearance, conveying groove clearance, driving brake clearance, clutch and bearing clearance, and the clearance between the agitator blade and the bottom plate of the header,