Using this Westinghouse Chef hotplate control knob is easy. Simply align the flat side of the shaft with the corresponding slot on your stove or cooktop and gently push the knob onto the shaft until it's firmly in place. When adjusting the heat, turn the knob in the direction you want to increase or decrease the temperature. Make sure your hands are dry before using the knob to prevent slipping. As for maintenance, wipe the knob regularly with a soft, damp cloth to keep it clean. Avoid using abrasive cleaners as they can damage the finish. If you notice any issues with the knob's movement or if it becomes loose, don't try to fix it yourself. Instead, contact us and we'll help you out.