Precautions for the use of tractors

(1) the throttle should not be placed at the maximum position at startup. When the engine is started, the throttle should not be placed in the maximum position, otherwise the engine can reach a high rotational speed and discharge a large number of black smoke at the same time, which will aggravate the wear of the parts and shorten the service life of the machine. When starting, the throttle should be placed in the middle oil gate position.
(2) the cause of engine reversal at startup. When starting, if the engine comes out of air filter smoke and muffler intake, this means that the engine is reversed. Most of the engine reversal is due to the excessive oil advance angle. Oil has been supplied before the piston has reached the level of fuel supply. When the fuel is deflagrated ahead of time, the piston is pushed back and the crankshaft is reversed; in addition, when the engine is started, the rolling time is too long and is not started, the fuel accumulates too much, and it can easily cause the reversal, or when the flywheel is rocking, the pressure relief handle is moved to the “running” position and satisfies the mixture when the piston does not reach the stop point. Combustion conditions, the mixture of deflagration after the piston back, resulting in reversal. When the engine reverses, the order of the intake and exhaust stroke is reversed, and the oil of the oil tray in the air filter is often flushed out, the engine sound is abnormal, and the parts are very easily worn. Once the reversal occurs, shut down the accelerator immediately and stop the fire.
(3) in winter, after the tractor stops, the cooling water can not be released immediately. The normal working temperature of the engine is 75~95 degrees, while the external temperature is very low in winter.  After the tractor stops, if the cooling water is released immediately, because the surface of the metal parts is cooled and contracted suddenly (the metal temperature in the machine parts is still high, it seldom contracts), it is easy to make the body and cylinder head produce deformation and crack. Therefore, in winter, the cooling water must be released when the water temperature drops to 40~50 degrees after the engine is extinguished.
(4) no cold water can be added to the engine when the engine is overheated. When the engine needs to add water due to the lack of water in its work, it should not immediately add cold water. Otherwise, the body and cylinder head will crack due to the sudden shrinkage of local temperature and shrinkage of metal. When adding water to work, the engine should be operated at a low speed for 10~15 min, and when the water temperature is lowered, the cooling water will be slowly added to the engine.
(5) no long-term overload operation. Some drivers, because of the lack of common sense of agricultural machinery, want to earn more money and increase their loading at random when they are engaged in transportation operations. Due to overloading operation, the fuel supply is increased, the rotational speed is reduced, and the fuel combustion is bad. This will not only increase the wear of parts, but also reduce the service life of locomotives. So, do not overload the locomotive.