Just bought a 2000 400 scrambler a little over a week ago. We (my son and grandkids) took it and our other motly collection of quads (a honda trx 250x, a honda trx400ex, and an mz 100atv) trail riding. The machine had set idle for several years and pretty much all i did was change fluids, lubed it, adjusted the chain, and cleaned out the fuel system and off we went for two days of riding. I will say that it is an impressively well built machine. I unfotunately didnt know about seating the starter rope and am now rebuilding the starter due to about a cup full of muddy water finding its way in!
On the plus side there are grease fittings everywhere, something honda should do. Heck, they should have them on my superduty!
Thanks for having me and, being mostly experienced with diesels, I will probably asking a lot of dumb fuel system questions