Using this control knob is easy. Just align the flat side of the shaft with the flat part on your stove's control mechanism and gently push it on until it fits snugly. When using your stove, turn the knob slowly to adjust the heat as needed. Be careful not to use excessive force when turning the knob, as this could damage it. For maintenance, you can clean the knob with a mild soapy water solution and a soft cloth. Dry it thoroughly before using it again. If you notice any signs of wear or damage, it's best to replace the knob to ensure safe and efficient operation of your stove.