Make a list of the appliances, by make and exact model. There may be a list inside the wardrobe closet door, possibly not. Anyhow, the fridge for example, open the door and find the sticker on the sidewall with the make and model number. Water heater, open the outside door and look on the sidewall for a sticker. Other stuff is more difficult. The furnace probably has the sticker where you can find it if you remove the outside door. The stove, most likely you have to remove the top piece, most you push back real hard and then lift the front up and pull it toward you to remove it.
The manuals are virtually all PDF files and are generally not copyrighted so they are easily found on the internet. In addition to owners/operating/installation manual that comes with fridges, water heaters, etc, also look for service manuals applicable to your appliances. These will have troubleshooting charts and other info on how to perform certain tasks or tests on whatever appliance is covered.
After taking pics of everything you find, and writing it down, start searching. Here is a list of places to search for manuals.
RV tech, service and owners manual sources.
Technical Service Manuals – PDX RV
Bryant R.V. Services
Index of /pdf (scroll down to Atwood and Suburban. This is basically a home water heater web site bur have included the RV water heaters also.)
Service Manuals - My RV Works
Free RV Manuals
Component Manuals – Forest River Inc. (even if not a Forest River, they may have the manual you need)
Prime Time has partnered with top component manufacturers. Use this search to find manuals for your RV.
primetimerv.com
Service/User manual Downloads – RV Comfort Solutions
Your RV Refrigerator boiler operates at about 350 degrees all the time, but even a brief time off-level, like driving up a hill, can send that temperature sky-rocketing. Events like this produced a lot of thermal stress in the fridge boiler, stress that causes the metal to fatigue and the...
www.arprv.com
While a few manufacturers did compile rather through manuals for their products, Such as the Winnebago motorhomes, most manufacturers gather up the operating and installation paperwork and manuals that come with the appliances they are installing in your RV and stuff them all in a plastic pouch or manila envelope. Good RV owners pass this stuff along to the next owner, many, who are not mechanically inclined, consider them useless and throw them away.
As far as using the tank dump system, or the fresh water fill system, flushing tanks, operating the water pump, etc, Youtube is your friend, and ask questions here also. Most YT videos are actually good, a few are way off in left field, but you will figure out that right away.
Here is the original sales brochure for the 2002 Trail Lite models including yours. It has specifications, and standard and optional equipment listed. Curiously, the tanks for all models are all the same 30/30/30 fresh/gray/black.
That is a welded aluminum frame trailer which is a good step or two above the standard stick built models. Hopefully it is in nice shape. Travel season is just around the corner.
Again, don't be afraid to ask questions, be it how to do something or what something is, or how or where to travel. With a 4690 lb gross vehicle weight rating and 7 ft 3" wide, it should be an easy tow for a half ton pickup or a SUV.
Charles