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一台小四轮拖拉机突然手摇不能起动,用其他车辆牵引也不易起动。经拆卸检查发现,涡流室镶块在起动孔和主喷孔中间部位出现裂
A small four-wheel tractor can not start suddenly hand crank, traction with other vehicles is not easy to start. After demolition inspection found that the vortex chamber inserts in the starting hole and the middle of the main jet hole cracks