Hi, my name is Kerry
As far as I know, no step by step instruction manual exists to remove an engine from any boat.
Manuals exist for specific engine makes and models but not for particular boats.
If you work with me, I can provide such instructions, my limitation is that I don't know exactly what your boat looks like,
I've worked on Carvers before, but what year is your boat and what engine model do you have, also which model of Carver?
I'm assuming you have inboard engines, plural, and that you need major work on one of them, please correct me if I'm wrong.
I've seen boats where a hole had to be cut in the flybridge deck to remove an engine, others where the engine could be accessed through the salon door-way.
Pictures would be nice, what are you looking at?
If I have clear picture of what you have, I can give you step by step instructions.