Using the Jet JT9 - 441320 SJ - 20T screw jack is easy. First, place the jack on a flat and stable surface. Make sure the heavy - duty cast bell - shaped base is firmly on the ground. Then, adjust the corrugated pivoting head to fit the load for maximum contact. If you need to lift the load, you'll need to buy a turning bar separately and use it to turn the screw. Remember, this jack is designed to hold up to 20 tons, so don't overload it. When not in use, keep it in a dry place. Check the screw and the head regularly for any signs of wear and tear. If you notice any problems, don't use the jack until it's fixed. This jack meets the ANSI/ASME B30.1 Standards, which means it's safe to use as long as you follow these guidelines.
