2005 Ski-Doo REV Series Shop Manual, Page 117Get this manual

2005 Ski-Doo REV Series Shop Manual, Page 117

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Section 03 ENGINES Subsection 05 (TOP END)
NOTE: RAVE stands for Rotax Adjustable Variable ExhaustThe RAVE valves change the height of the exhaust port to enhance the engine powerband and torque