adjustment To adjust, pull vp on handle and move up or down to desired height. Release handle to secure in place. 1. Remove contents from box. 2. Place base flat on the ground. Insert pneumatic cylinder into base. Make sure the silver end is at the top. 3. Assemble cushion on top of the pneumatic cylinder. Make sure it is secure. 4. Insert castors into the base. Make sure the castors are tightened in the castor holes.
