2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 833Get this manual
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Section 02 ENGINE Subsection 09 (CYLINDER BLOCK)
111I1lIUO!1 l1till lH II
1 Arrow toward exhaust side
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3 Turn cylinder block upside down 4