Bombardier SeaDoo 1998 factory shop manual, Page 85Get this manual
Section 04 ENGINE Subsection 05 (TOP END)
Remove RAVE valve no15Remove the cover no18 of the valve by releasing the spring no16
Remove spring no30 retaining bellows no21 to valve piston no20;
WARNING
Firmly hold cover to valve baseThe compression spring inside the valve is applying pressure against the cover