brand new on here help and hello

Well I want to change the gearing so it is on the low side because it will be used around the house / garden so speed is not a thing but towing might be As far as knowing what to do I took care of the old 3 wheeler's them the 250 foortrax and 300 fourtrax's at the ranch for a few years These guy's were used 7 days a week 10-12 hrs a day for months on end and all work on them was done of a night plus other work so I know what a sink hole it can be and I do know my way around I do want any and all advise and things to look out for . Right now I have found tubes that will fit the tires so I will try them I am just getting started but for the most part it is old but ok The tank is clean and I see not even a hint of rust so that is a good sign The battery is taking a charge it turns over ok and has compression. My plan is to check spark and get the carb off for a good cleaning the cables are in need of a good soaking The gearing is way down the road But I do like that it is a chain drive so that is easy to change If and when I do get it running ok I do know I will need to fab up a hitch for it and something like the light on the old 250 fourtrax that turned with the handlebars So first up is cleaning the carb make sure I have fire The one thing I do have going is I know the people who gave it to me and they said it was running when they parked it and it has sat for a year or two but I do trust them so it was running

OK Good news and bad news Good news I got it to turn over and it fired eek so that is great The lights and switches work ( HI and low beam) the neutral and reverse lights work Now the bad news The tail light lens is broken:sad also both choke and throttle cables are frozen But the carb needs a good cleaning so they can soak at the same time, I do not think the battery is going to hold a charge so will look for a used one The tires are bad and will not hold air but I can get tubes and they might last for awhile Can anyone help me with someplace to find used ATV tires ?The chain and sprockets look OK just need a good cleaning and lubing. The muffler is broken off but it is there and not to rusted out so I think I can weld it back up The outer part of the muffler has a few spots that are rusted threw but I can skin that and patch it up I want to thank ya for the links for the manuals they will be a big BIG help and saved me hrs of searching I think the air cleaner is a lost cause but maybe not So the plan is to get the tank off and a good cleaning ( I do not see any rust in it ) Pull the carb and clean it and get the cables freed up so I can run if for a bit and see if there is anything else that I need to look at runt it threw the gears to make sure nothing is broken Then look into what to spend on what I do think I got lucky all the fenders are in great shape no cracks or broken parts ( except the tail light) even the flaps are good The racks are good no dents or bends so a good cleaning and some paint and there good So a few things like how do you start a thread?? I would like to post as I go along for a cheep bargain barn 200d fortrax restore and any ideas would be great as I go along thanks