1三做到一是入冬之前,对拖拉机作一次全面的维护保养,并彻底排除发动机难以起动的隐患,使拖拉机保持良好的技术状态。二是冬季气温低,要选用0号柴油和流动性能好、黏度较小的冬季用的机油。三是坚持科学的方法起动发动机。即加热水预热发动机等方法。2四防一是防冻。每天作业结束后,让发动机在小油门怠速运转10分钟左右,等机温降至50℃左右再放掉 1 three to do one is before the winter, the tractor to make a comprehensive maintenance, and completely exclude the hidden danger of the engine is difficult to start, the tractor maintain a good technical condition. Second, the winter temperature is low, to use 0 diesel and good fluidity, low viscosity winter oil. Third, adhere to the scientific method of starting the engine. That is heated water preheat engine and other methods. 2 four antifreeze one. After the end of daily work, let the engine run at small throttle idle for about 10 minutes, wait for the machine temperature dropped to about 50 ℃ and then let go