Good deal, I just got a 99 WR 400F about 4 weeks ago. I took it for some muddy soggy trail riding when I got it and opened it up on the straights and hills for the first time last weekend. Let me briefly share some things to look out for on a used bike, GO OVER EVERYTHING!!!, It was ideling rough so I cracked the carb open to find the accelerator pump packed with grit. I then found an oversized main jet, and the pilot screw not only fully seated but torqued down tight, shold be at least 1 1/4 turns out! Next I pulled the front wheel to check the bearings and saw the left side fork tube drop about 4 inches once I pulled the wheel off! I opend up the fork and found the damping rod not even bolted to the end cap. I was riding around on only one fork tube! I popped the right side open and the damping rod fell off as I was unscrewing the end cap, it was never tightend! I checked for damage and bolted it up and tightned the jam nut down, and started wondering what else Mr. BadWrench might have gotten into. I only pray he never tried to adjust the valves or YZ time it, he said he didnt but I have not pulled the valve cover off yet, I suggest going over the bike with a full manual service check as far as servicing all bearings, and checking the valves, oil and forks out. Oh yeah, your supposed to run the bike for like 5 mins, let it sit 5 before checking the oil, if you dont run it it looks like its off the stick, I overfilled the bike this way and was pushing oil out the breather before I found this out, it is in the book though, I would not wipe my but with most owners manuals but read the Yamaha one cover to cover, the tuning part is great for setting the jetting and carb and stuff. Good luck! Enjoy!