250-500cc Powervalve adjustment?

Can you adjust the power valve on an 09 wr 250?

Just asking because I have read about people adjusting power valves. Somebody on here has got to know.

Yes, you can adjust the power valve closing point on a WR250. There is a stop behind the cover that's behind the pipe.

Thank you.

Here is an old thread on it. http://www.cafehusky.com/threads/wr250-power-valve-adjustment.12565/

You can adjust the opening and closing limits. I got a copy of the service manual on CD from Halls. There are some diagrams on it in there.

Thank you!