I had to get my 2015 Allegro smogged, (bought in Oregon and live in Calcornia) They wanted to look at the top of the engine and I had no idea how to get the "doghouse" open. I called Tiffin service and they sent me an e-mail with about 10 photos showing where the 7 or 8 screws are located and what it looks like opened. After all that the smog guy decided he didn't want to do that anyway. There are screws holding it down and it would help to have a small magnet to find them. They are Phillips head screws. Hope it helps.
