UK Appliance Repair Questions? Ask a Technician for Answers ASAP
You have to first isolate the power to the oven.
Next, take the shelves out to give yourself some room.
Now pull the glass covering the light off.
Unscrew the bulb.
Screw in the new bulb.
Refit the glass lens.
Restore the power.
Click here for the manufacturer instructions and diagram
Hope this helps
Let me know how it goes or if you need more help