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一位学员驾驶工农-12型手扶拖拉机作穿桩练习时,由于驾驶技术不熟练,后退转弯中捏错了转向离合器手把,眼看要撞倒桩子,手忙脚乱,脚先踏制动器,而手慢提离合器手把,一只手想去加大油门,结果机车熄火了。当重新起动时,却几次摇不着火。当检查油路时,油路正常;教师让其拆下摇臂室罩盖检查气门推杆是不是脱落,拆下摇臂室罩盖后,果然发现气门推杆脱落。于是便把推杆装好,并装上摇臂室盖,然后进行起动,手扶拖拉机起动着火后,发生了怪现象,
When a trainee used to drive a worker-peasant-12 walking tractor to practice pile-driving, due to unskilled driving skills, the steering clutch handle was wrongly turned in the backward turn. Clutch handle, one hand want to increase the throttle, the result locomotive flameout. When restarting, but can not shake the fire several times. When checking the oil, the oil is normal; the teacher let it remove the rocker cover to check the valve plunger is not off, remove the rocker cover, and finally found the valve putter off. So put the putter installed, and install the rocker cover, and then start, walking tractor start fire, the strange phenomenon occurred,