在进行手扶拖拉机选购时,首先要注意检查外观质量,包括覆盖件的涂漆质量和各机件的制造质量。油漆应光亮均匀,没有漏喷、起皮、脱落和生锈;外部零件完整无损。各铸件的表面光滑,不得有裂纹,焊接部位的焊缝要平整、牢固;对于象发动机与机体、发动机气缸盖、高压油泵和油路接头、驱动轮、机架与变速箱等重要部件要检查其联接螺栓是否齐全可靠,不能有严重的 In the purchase of walking tractor, we must first pay attention to check the appearance of quality, including the quality of cover pieces of paint and the quality of the manufacture of various parts. Paint should be bright and uniform, no leakage spray, peeling, peeling and rust; external parts intact. The castings of the smooth surface, no cracks, welds to the welding site to be smooth, solid; for such as the engine and the body, the engine cylinder head, high pressure pump and oil joints, drive wheels, racks and gearbox and other important parts to be checked Its connection bolts are complete and reliable, can not have serious