1. Before the equipment is used, the inspection and maintenance of the equipment shall be done well. The transmission part of the equipment shall be frequently filled with lubricating oil to keep the oil quantity sufficient, so as to avoid the jamming caused by insufficient lubrication and affect the angle setting effect of the angle setting machine. 2. The working medium of the oil pump is hydraulic oil. Keep the oil volume on the middle line of the oil mark to prevent the oil pump from ......