更换发动机怎样办手续《广西农机化》编辑同志：我有一台方向盘式小型农用拖拉机，原来的发动机坏了换了下来，我重新买了一台发动机装上。后来我开车上路，被农机监理人员查出发动机号与行驶执照上记录的不符而给予罚款处理。请问：拖拉机更换发动机怎样办变更手续？机手... Change the engine how to do procedures “Guangxi Agricultural Mechanization” Editor: I have a steering wheel small farm tractor, the original engine is broken, I bought a new engine. Later, I drove the road and was given a fine by the supervisory staff of the agricultural machinery who found that the engine number was inconsistent with the record recorded on the driving license. I ask you: how to do to replace the tractor engine change procedures? Hand ...