拖拉机操作中的十忌一、忌机车起动前不摇车一般来说，发动机是在低温和润滑条件差的情况下起动的，尤其在机车停放时间较长或冬季气温较低的情况下，由于相互配合的零件（曲轴颈与轴瓦、活塞环与缸简等）在相对运动时，处于缺少润滑油的于摩擦状态，直接起动不仅阻力大，... Avoid bogey in the tractor operation First, avoid the car before the start of the car does not shake the car Generally speaking, the engine is started in low temperature and poor lubrication conditions, especially in locomotive parking a long time or winter temperature is low, due to Mutual cooperation of parts (crankshaft and bush, piston ring and cylinder Jane, etc.) in the relative movement, the lack of lubricant in the friction state, the direct start not only resistance, ...