2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 129Get this manual
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Section 02 ENGINE Subsection 11 (RAVE (593 E-TEC))
Idle or low RPM 6600 to 7700 From 7700
SOLENOID VACUUMPRESSURE SEPARATION
The ECM controls the solenoid as followsRAV