Terrible idea , great way to get yourself killed as the sewer lines could contain dangerous fumes that are highly explosive methane , hydrogen sulfide etc. An open flame is an invitation for a violent reaction .=One easy way is to chisel it out as non ferrous metals do not spark THAT IS WHY THEY USE Plastic or Brass plugs=
If there is another cover then you can remove it. If the plastic covering is the only cover on the cheese and it is kept off there is a good chance it will go bad earlier then it should.
when you are in the pool
First you need to support the engine from underneath, so you can remove the motor support right above the cover you want to remove. Remove serpentine belt, tensioner and this should give you enough room to remove the timing belt cover.
You can remove the rear light cover on your Peugeot 607 by squeezing the tabs located in the middle of the light cover together. Once the tabs are depressed the light cover should come off.
Remove the cover in the trunk. Should be right there.
Remove the old pins with Vise-Grips and drive the new pins in carefully with a brass hammer (to prevent distorting them).
the hinges should have pins remove um and its off
When you remove the cover it should be on the underside of the cover. Also, if you have the owners manual it is in there.
Be sure to cover the blade with a proper blade cover and remove the battery.
remove guy ropes
remove bar, chain there should be a small cover over the drive sprocket, held on woth a screw, remove cover, then there should be a screw or bolt holding the sprocket on, remove that, pull old sprocket off, replace it in reverse.
Check out the following website for a heated seat installation. In it they cover how to remove the seat covers. http://www.scacgp.com/mods/heated_seat.htm http://www.seatcoverset.com/seatcovers-car_seat_cover.htm hope this helps. "G"