Using this adjustable levelling leg is easy. First, locate the old leg on your Simpson or Westinghouse upright stove. Unscrew the old leg carefully. Then, screw in the new adjustable levelling leg until it's firmly in place. You can adjust the height of the leg to level your stove properly. When handling the leg, be careful not to damage the threads. If you notice any dirt or debris on the leg, clean it gently with a dry cloth. For long - term use, it's a good idea to check the tightness of the leg every few months. This will help keep your stove stable and working well.