1 Tighten the valve clockwise to ensure that the oil return valve can not be turned as far as it will go.
2 According to the height of the car body,select the height of screw out.
3 Insert the handle without groove into the end.
4 Place the jack near the tire of the car chassis ,and pull the handle up and down to reach the desired height.
5 After completion,loosen the valve one or two turns times anticlockwise,and press by gravity.This jack does not have the function of automatic lowering.Remember that the oil return valve cannot be loosened too much,or the jack leaks oil.