微耕机是以小型柴油机或汽油机为动力,可替代人力、畜力而又适应山区小面积、小田块作业的农机具,一般由发动机、变速箱、行走箱,工作部件、扶手操作部件等组成(如图1)。发动机由缸体总成、汽缸盖总成、气缸盖罩总成、活塞连杆总成、曲轴飞轮总成、凸轮轴总成、消声器总成、手拉启动总成、喷油器总成、喷油泵总成、启动电机总成、飞轮发电机总成、导风罩总成和 Tiller is a small diesel engine or gasoline engine-powered, alternative to human, animal power and adapt to small mountain area, Ota work agricultural machinery, usually by the engine, gearbox, walking, working parts, handrails operating components and other components Figure 1). The engine consists of cylinder assembly, cylinder head assembly, cylinder head cover assembly, piston rod assembly, crankshaft flywheel assembly, camshaft assembly, muffler assembly, hand crank assembly, fuel injector assembly, Fuel injection pump assembly, starter motor assembly, flywheel generator assembly, wind guide cover assembly and