How to fit oven bulb

You should have a glass cover over the bulb itself. It may either screw on or it may have 2 or 3 screws at the base of the glass to take out. Then you should be able to unscrew the bulb as you would any other light bulb in your house. You will want to replace it with another appliance bulb 40 watt. If you have another type bulb or set up in your oven let me know and we will work through it.