Hello, welcome to the site. I know nothing about the Latvian economy, so I can't say if you're getting a good deal or not. In the states, $3000 for a 2007 4x4 TRX420 with a winch would be a good deal...I'd certainly jump on it.
I wouldn't put a whole lot of stock in hours. Mine has almost as many hours as it does miles because it spends a fair amount of time idling (when using the winch, loading the trailer, etc.). I also put on a fair amount of hours without miles when pushing snow last winter (which we had a lot of).Thanx Green. I checked forum and saw that some of you got atv's with over 2 and 3K miles... so 550 should be fine. Now i have to see hours. And as i understand under 100 would be fine right?
Throttle cables, reverse shift cable, 4x4 shift cable. They can all be lubed with cable lube. I'm not sure what springs he's talking about...maybe throttle return spring...but I'm not sure how to lube a spring (or why).Air filter, look for springs and cables the need lubricated. Check adjustment of brakes. Check tire pressure.
If the tires are good then I'd just use them until you figure out what you need.
What springs and cables are you talking about? Please explain in more detail.
And speaking of wires - and electrical system overall - i saw many guys going almoust under water with Rancher... is wiring prepared for that from factory? Or they do aditional water isolation. Air tube is clear.. but what about electricity?