Before attempting to remove the bulb ensure the power supply to the oven has been switched off. Fat and food deposits along with the heat of the oven can result in the bulb holder being seized in place and difficult to remove. For extra grip wear a 'marigold' type rubber glove and turn the cover anticlockwise to remove it. Once the cover is off grasp the bulb still wearing the glove and twist it anticlockwise to remove it. Be careful at all times when handling glass items. Replacement bulbs may be purchased from the spares section of our warehouse.