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FS-180型拖拉机更换机体、主轴瓦和连杆瓦之后,启动很正常,就是气门摇臂轴不上机油。拆装两次检查机体油道未
FS-180-type tractor body, main bearing and connecting rod after the start is normal, that is, the valve rocker shaft is not on the oil. Disassembly check the body oil path twice