Well, it seems the context you've provided is the standard footer from a YouTube page, which is about as helpful for taking apart a sofa bed as a chocolate teapot is for holding hot tea. Fear not, for I am here to guide you through this Herculean task.
So, you've decided to wrestle the beast known as the sofa bed. A noble, if occasionally finger-pinching, endeavor. First, prepare for battle. You'll want a socket set or adjustable wrench, a screwdriver with multiple heads, and a friend. Seriously, do not attempt this solo unless you enjoy the sensation of being pinned under furniture that weighs more than a small car.
Your first move is a simple one, designed to build confidence: remove all the cushions and the mattress. Set them aside, far from the field of battle. Now, you must face the belly of the beast—the folding metal bed mechanism. Pull it out as if you were opening it for a guest, but stop halfway. Peer into its metallic guts and look for the bolts that attach the entire metal frame to the main wooden sofa frame. There are usually two or three on each side. Unleash your wrench and liberate the mechanism. This is the heaviest part, so this is where your friend earns their keep.
With the metal heart of the sofa bed removed, you're left with a hollowed-out couch. Much easier to handle! Now, you can focus on the arms and back. Tip the sofa forward and look for bolts connecting the arms to the base. Unscrew them, and the arms should come off. Some arms might be on a sliding bracket, which may require a firm upward tap to dislodge. The back is usually attached in a similar fashion, with bolts or brackets holding it to the main seat frame.
Keep all your screws and bolts in labeled plastic bags. Your future self, who has to put this mechanical monster back together, will thank you profusely. After all, reassembling it with mystery parts is a puzzle no one wants to solve.
