Small Footprint Construction Fast Operation And Repair Durable For Heavy Use Reliable And Portable Safety Instructions: The Lifting Capacity Of The Jack Must Not Be Exceeded . The Base Of The Jack Should Be Placed On A Solid Ground. The Upper Part And Body Of The Jack Should Be Inserted Very Firmly. Once Raised, It Cannot Be Used Under A Heavy Object Lifted Without A Support Stand. In The Case Of Using More Than One Jack, The Lifting Speed Of The Jacks Should Be Proportional To Each Other And The Weight Of Each Should Be Balanced. Otherwise , There Is A Danger Of Overshooting . Directions For Use: To Lift: Turn The Isolating Valve Clockwise Using The Slotted Opening At The End Of The Handle To Tighten The Jack. Then Put It Under The Object To Be Lifted . Turn The Adjustable Screw Rod Until It Comes Into Contact With The Object . Insert The Handle Into The Lever Holder And Press It From Top To Bottom; The Piston Will Rise Slowly Until It Reaches The Specified Level . To Lower: Lift The Push Rod. To Loosen, Turn The Isolating Valve Clockwise Using The Slotted Mouth At The End Of The Lever. Then The Piston Rod Will Move Down Slowly. The Isolating Valve Should Not Be Turned Quickly With A Load On It, Otherwise Rapid Lowering May Be Dangerous.