1.上坡时,高档换低档由于上坡时拖拉机减速很快,故应提前减档。坡越陡,提前程度越大。换档动作越迅速越好,一般可在熟练掌握“两脚离合器法”的基础上,采用“快速换档法”。操作方法如下:第一步,将油门踏板踩到所需的位置并保持不变,即保持油门开度不变;第二步,踩下离合器踏板,同时将变速杆移入空档,然后迅速松放离合器踏板;第三步,再踩下离合器踏板,同时将变速杆 1. Uphill, upscale downshift As the tractor slows downhill, it should be downshifted in advance. The steeper the slope, the greater the degree of advancement. Shift the faster the better, the general can be proficient in “two feet clutch law ” based on the use of “fast shift ”. The operation method is as follows: The first step, the accelerator pedal to the required position and remain unchanged, that is, to maintain the throttle opening unchanged; the second step, depress the clutch pedal, while the shift lever into neutral, and then quickly loose Put the clutch pedal; the third step, then depress the clutch pedal, while the shift lever