Have you looked at the emergency exit.
When I installed a washer dryer combo unit, in my MH, I had to bring it in through the emergency exit window, onto the bed and then down the hall.
Caution : When I swung my exit window wide open , it dropped out of the hinge, helper got it stopped 4" off the ground.
I may still have the assembly instruction for these Euro chairs, they don't recline flat out but are very comfortable.
If I find the paper work I'll scan and post it.