2006 Ski Doo REV Service Shop Manual, Page 115Get this manual
Section 03 ENGINES Subsection 05 (TOP END)
WARNING
Firmly hold cover to valve base no6The compression spring no7 inside the valve is applying pressure against the cover
A32C98A
A32C96A
TYPICAL 1Allen socket screws 2RAVE valve base
Unscrew and remove the guillotine no9 from the valve piston no10 than remove the gasket no111