As others have said an owners manual in pretty much any form is useless. The reason the mfg's have so many units that are the same but different it would cost them to much to have a unit specific manual.
With that said you will be much better off getting the model numbers of all the items you want to know about, i.e. frig, furnace, water heater, stove and the list could go on. Do your google search and you should find what you need. The things you will not find are plumbing diagrams or elect.
Good luck and enjoy