With the rapid development of agricultural mechanization, the number of agricultural tractors is increasing. In order to adapt to this situation and give full play to the role of the machine, it is necessary to grasp the key points of the correct use of tractors. 1, start According to the test, the amount of wear caused by the engine when starting the engine is about 50% -60% of the total wear, in order to reduce wear and prevent accidents, pay attention to the following points: 1 before starting the best use of crank handle crankshaft crankshaft For ten revolutions, engines that are not used for a long time should do so in particular. The purpose is to prevent accelerated wear due to the inability of lubricants to flow to the friction surfaces in time, and even cause burns and other accidents. 2 The engine is not warmed up sufficiently and no fuel is supplied to prevent the fuel from flushing the cylinder walls and diluting the lubricant. 3 When starting the throttle should not be too large, so as to avoid idle speed is too high, accelerate wear. 2. Preheating and maintaining the normal cooling water temperature When the engine is working at a low temperature, due to the role of sulfur dioxide and sulfur trioxide in fuel combustion, the erosion of the cylinder is significantly increased. To reduce corrosion, the following points should be noted: 1 Insulation measures minimize engine warm-up time. 2 The engine should be warmed up until the water temperature reaches 40°C before starting. The water temperature can reach 60°C before loading. 3. The load tractor should be close to full load and not overloaded. 4. Correctly control the tractor In principle, the additional inertial force or impact load that each moving part of the tractor may receive may be minimized. That is, during the operation, the driver should strive for a smooth operation, not abruptly change the position of the throttle lever, do not slam on the clutch, and should travel at a low speed on uneven roads and over the ditch. 5, the use of tractors in winter Note 1 In order to facilitate the start of the engine, the electric start system should be enhanced maintenance, so that the preheating device works well, according to the temperature drop appropriate to increase the proportion of battery electrolyte, pay attention to insulation and necessary for the battery The supplement charge. The engine is preheated with hot water during start-up and the oil in the oil pan and gearbox should be heated. 2 In order to prevent the engine cooling water temperature is too low, insulation should be added before the radiator. The antifreeze should be replaced in the cooling system. After the engine is extinguished, if there is no antifreeze measure, the cooling water should be exhausted when the water temperature drops to about 75°C. 3 Use winter fuel and lubricants. 4 Add proper amount of diesel oil to the oil of the wet air filter to improve the filtration effect. 5 Strengthen the maintenance and inspection of clutches, brakes and their operating mechanisms so as to avoid accidents caused by snow and ice in the road area. The tire inflation pressure should also be appropriately increased. After the work is completed, the tractor should not be stopped in a wet place so as to avoid the walking device freezing on the ground and overloading the drive train and the walking system at the start.