If WD40 doesn’t help shift it you could try this:
[quote]“A “friend” forgot to remove the owners manual from her new stove. When she turned on the stove the plastic melted onto the interior surface. What can my “friend” do to remove the adhesive material stuck onto the surface of the oven?”
Try these techniques :
Heat really can set stains etc. However, I think that you should heat the plastic up using a hair dryer or heat gun and try to scrape up as much of the plastic as possible with a plastic scraper (so you don’t scratch the oven).
I would avoid heating the oven again since it will be hard to work at removing the stain with the oven being hot.
Remove as much of the plastic as possible. Then using a general purpose solvent applied to a cleaning towel, wipe up as much of the residue as you can. Remember that solvents are flammable so do not have the oven on, or any source of heat near you, if the oven is gas powered don’t use a solvent.
Another thing to try would be oven cleaner. Let it sit on the stain and it may remove the final residue. This stain could be hard to remove completely. If you can remove as much of the melted plastic as possible you stand a chance of removing most of the residue.
I had a “friend” leave a loaf of bread in it’s plastic bag on the toaster oven and we managed to remove the plastic and most of the color from the plastic but there still was some residue. So don’t be surprised if you can’t remove it all, just enough so you don’t have a taste of plastic every time you bake something would probably be enough. If the manual is still readable I sure your “friend” will read that you should be sure the oven is empty before starting it![/quote]
taken from: howtocleananything.com/frame … terior.htm