CR250 Power Valve Cables

powervlv maint

check out http://www.motocrossactionmag.com/readridingtips.asp?id=471
I still cuss often at these cables when doing a top end.
sorry dead link
1 turn actuator ccw until stops
2 push left side cable to left. if you can push it to the point where it touches the cyl its too loose.
3 10mm wrench on lock nut
4. 8mm wrench on left side cable unitl tiny bit of slack do not make it taut.
5. tighten the nut replace cover.
"the cr's power vlv servo has no way to take up slack in the cables the power vavle module pulls the same amount of cable wether the cables are properly tightened or slack...the servo moto will spend some of its precious rotation removing slack...the flapper valve will not have moved all the way up in the exhaust port."

I dont remember what I did exactly last top end, but I remember not taking the cables out. I remove the nut in the middle of the power valve cable guide and it separated the cable assembly separate from the power valve. That way I didnt have to monkey with the cables, they seemed like a pain to undo. And like you said the manual isnt very helpful.

The cables should just disconnect off the servo motor once unbolted like +30 said,(well reverse of what he said since those where the instructions to tighten the cables) but your 05 might be different then my 02. I always replace the cables every topend, they should run around $20-25 for both.