2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 63Get this manual
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Section 02 ENGINE Subsection 04 (AIR INTAKE SYSTEM)
3 Unplug headlight connecto rsr-I"I irUt 11)
6 Disconnect air temperature sensor (ATS) located on top of connector tube (600 HO E