2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 84Get this manual
Quality of the image is intentionally reduced!
Section 02 ENGINE Subsection 07 (LUBRICATION SYSTEM )
Engine isfires (carbon on 3D RAVE valve(s))
TYPICALPTO SIDE 1 Rem ove hexagonal bolts
Clean or replace 3D RAVE val