Shut off the controls on the range and wait for the appliance to cool.
Remove the burner grates from the surface.
Raise the stovetop by the front edge. If it is stuck, pry up the cooktop gently with a putty knife.
Raise the support rod to the hole underneath the stovetop to hold the top in the elevated position. Some XL models have two support rods.
Pull out the strips of insulation from the metal channels below the stovetop while wearing work gloves to protect your hands. The insulation can cut or scratch skin as well as cause itching.
Place the old insulation material in a heavy-duty trash bag.