Unplug the power cord from the outlet. Turn off the existing gas supply and disconnect the pipe from the dryer using an adjustable wrench if there is an existing connection.
Push the blade of a putty knife into the seam between the top of the dryer and the front panel at the corners and pry up to release the retaining clips. Rotate the top up and lean it against the wall at the back of the dryer.
Remove the front panel retaining screws from inside the machine at the top using a Phillips screwdriver. Pull the front panel away from the frame of the machine and set it aside out of the way.
Remove the retaining screws from the dryer burner at the bottom of the machine using a Phillips screwdriver. Remove the tube from the dryer. Remove the orifice from the burner tube using an adjustable wrench.
Remove the leak limiter from the burner tube using an adjustable wrench. Install the new leak limiter into the burner tube and tighten it hand-tight. Install the new orifice and tighten it using an adjustable wrench.
Reinstall the burner tube and tighten the retaining screws using a Phillips screwdriver. Install the front panel on the dryer and tighten the retaining screws with a screwdriver. Lower the dryer top and push on the corners to lock the retaining clips.
Plug the power cord into the outlet. Connect the LP gas pipe to the dryer and tighten the fitting with an adjustable wrench.