2006 Ski Doo REV Service Shop Manual, Page 108Get this manual

2006 Ski Doo REV Service Shop Manual, Page 108

Section 03 ENGINES Subsection 05 (TOP END)
With blade stopper no13 removed, check reed valve for proper tightnessThere must be no play between blade and valve body when exerting finger pressure on blade at blade stopper locationIn case of play, turn blade upside down and recheckIf there is still play, replace blade andor valve body
A06C0FA

1No play

Check distance from blade stopper inner edge and distance from center of reed valve block