Mendota ML39 Assembly, Installation And Operating Instructions page 53

4. Next remove the burner from the fireplace. Remove the two screws from each end of the burner. Then rotate the burner 90
degrees to the front so that the burner legs clear the air box. Then slide the burner to the left to remove it from the air shutter
box. The burner will then be free and can be removed from the fireplace.
5. You will now be able to access the burner orifice, which is located inside the air shutter box. Using a ½" deep well socket
wrench, remove the orifice. When removing and installing the orifices be sure to use a wrench to keep the fitting the orifice
screws onto from rotating.
6. Thread a new #50 orifice on the orifice mounting brass fittings. Tighten down the orifice. Next continue to follow the
instructions to convert the pilot for LP Gas.
85-03-01136 ML39 Page 53