Good Afternoon to The First State! As you may have guessed, I am working in Delaware right now. I am finishing up a Tune Up on a Smith Gas Fired Boiler. After undoing two screws and disconnecting the Gas Pipe, the whole Burner Assembly slides in/out as one piece (as seen from the video). Once this is pulled out you have access to the burners, as well as the pilot light Assembly. With this out, I was also able to look up into the Heat Exchanger to inspect it.