2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 150Get this manual
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Section 02 ENGINE Subsection 12 (RAVE (797))
2 Free bellow from valve piston 3 Carefully unscrew valve piston th en re move compress ion spring4 Remove screws securing the RAVE valve hous