4 Stroke Maintenance/WR250

Jun 21, 2000
Looks like I have found a WR250 (they are hard to find) I am a 2 stroke guy from way back, just wondering how bad the Maintenance will be, the major stuff that is, not routine stuff like chain tension, oil change. How often will it need say, valve work, Piston work ? All I done to my 2 strokes was rebuild the top end about every 6 months. I trail ride mainly, about 4 hours a week.
There is alot of Good info here on the WR250, I believe I have picked a good bike.