2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 199Get this manual

2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 199

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Section 02 ENGINE Subsection 16 (SanaM END (797) )

sealant as score marks incurred are harmful to crankcase sealing
Check crankcase for cracks or other damages, Replace if necessary