For newly installed Rubber Track Crawler Mini Bagger,all parts must be filled with oil before trial operation, and the lubrication condition must be checked by shift during work; For excavators that have been out of service for a long time, all the old dry oil must be squeezed out before use. During the operation of the excavator, pay attention to the operation of each motor of the excavator, the Hydraulic Small Home Use Excavator mechanical transmission of the excavator, and whether there are abnormal phenomena in the braking system, control system, mini excavator with closed cabin cooling fan, lighting and signal. All kinds of problems should be found and handled in time during the inspection; Good lubrication can reduce mechanical wear and failure in operation