During operation, the liquid level of the oil tank shall always be kept at the centerline of the oil pointer to prevent the oil pump from being emptied. When refueling, use 120 mesh oil filter screen to filter impurities in the new oil. When in regular use, clean the oil filter every two months, clean the oil tank every six months, and replace with new oil.

Jack refers to a small and light lifting equipment that uses a rigid lifting piece as a working device to jack off heavy objects through the small stroke of the top bracket or bottom claw. Jacks are mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting, support and other work. Its structure is light, firm, flexible and reliable, which can be carried and operated by one person.