Woodsy,
I own a '96, the final year of production. I weighed it recently, it is 297 pounds WITHOUT gas. It is a five speed with a CV carb. Forks are 43mm KYB's. I have Race Tech Gold Valves on both ends of the bike. The first year 1993 bikes don't have an electric fan to keep the bike cool, they do overheat on the trail or MX track. My '96 also has a 3.2 gal tank, the other years have a 2.6gal. I change oil about every 8-10 hours of use per Larry Roesler's advice. No engine problems since I bought it.
I use mine for dual sporting and commuting to work. Works fine. Best to leave the engine stock, unlike the 300 they are hard to hop up without losing reliability. Power is really torquey, surprisingly fast, but not earth shattering, a KTM 400EXC is quicker and has more top speed. Nothing wrong with the handling except the bike is really heavy. Kawasaki should have made a six speed and they would have sold more, you either gear it for the road and open trails or for the single track, it can't do both really well without a gearing change.
I also had a 1996 KLX650C, the dual sport version with a steel tank, passenger pegs, electric start, turn signals, shorter suspension and 17" rear wheel. It made a better road bike, but was probably around 320 pounds dry!
If you can get one cheap, the off road KLX650R versions aren't a bad bike for the open stuff, IMHO. Not a bad dual sport either.