Most of our ovens use an E14 bulb. A special pack can be ordered from us which includes an E14 bulb and special tool to remove the bulb cover. Always make sure the oven is switched off and cold before replacing the bulb. The tool includes locating lugs to grip the cover. It can then be loosened by twisting and removed. This is a good opportunity to clean the bulb cover. The E14 bulb can then be changed and the cover replaced.