We have ALL the owner's manuals for every system on-board! If you want, I can fully explain and demonstrate all the systems in this coach for you.The good news is all the mechanical systems work great and she drives like a dream; the coach interior looks and smells new (non-smokers). You can take it this coach cross-country right now with no worries; however, the slide-out rubber gasket seals need replacement soon--but for now, no leaks. There are rubber gasket seal replacement kits available. Also, some clear-coat peel on the coach. There are other minor nit-picky things that could use attention, but nothing is a showstopper! It has a center fuel tank (150gal) driver & passenger side fill, Allison 6-spd transmission, exhaust brake, air brakes, air spring suspension, Cummins/Onan 7.5KW quiet diesel generator (replaced 2018 w/just over 524hrs), power patio & window awnings, Solid dark Walnut Cabinets/Doors, sofa/bed with seatbelts, side-by-side refrigerator/freezer, gas stove/oven, microwave/convection combo, solid surface Corian countertops, luxury bathroom vanity, and a smaller vanity in commode closet, large corner shower with skylight, automatic fantastic vents, queen walk-around bed, marble tile floors in kitchen & bathroom, carpet in bedroom & living room, cedar lined closet, washer/dryer combo. Dual roof top air conditioning systems and ice cold dash air too. Dual forced air gas furnaces with Thermostat & Auto Ignition - 35K BTU (Each) and so much more. Within the past year:New Goodyear Suspension Air Springs all around, new tires all-around PLUS spare, Engine and transmission oil and filters changed, Chassis lubed and all brakes inspected, replaced the 7.5KW Cummins/Onan quiet diesel generator, 2 new chassis 12V batteries and other minor items.Spartan Mountain Master. chassis. GVWR 42,000#, Independent Granning Front Suspension with air springs, Wet hubs on front axle, 10,000 lbs. Hitch Capacity, Air Horns, CB Radio, Solar Charging Panel. Power driver window, Power seats. LIVING ROOM: 13' Sofa/Kitchen Slide, 5' Bedroom Closet Slide, Walnut Cabinetry with gold-tone hardware, and decorative glass throughout coach. Polished marble Tile Kitchen & Bath Floors, Dual Pane Windows BEDROOM: Queen Island Bed, Corian Night stands, lots of storage cabinets and drawers. Bedroom privacy door, Cedar lined closet, Key Locked Safe, carpeted and very cozy.BATHROOM: Deluxe Fiberglass Shower w/Fold-Down Seat & skylight. Marble tiled floors and china toilet, private vanity in commode closet, large lighted make-up mirror and privacy door.KITCHEN: Corian Dinette Table w/Ext & 4 Chairs Slide out kitchen and living room 2 Bowl Galley Sink & Sink Covers, filtered water spicket, Norcold 4 door refrigerator/freezer w/ice Maker, Microwave/Convection oven with built in range hood fan/light, 3 burner stove/oven.