2009-2010 Ski-Doo REV-XP/XR 2 Stroke and REV-XR 1200 4-TEC Service Manual, Page 800Get this manual
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Section 02 ENGINE Subsection 08 (CYLINDER HEAD)
10 Properly install timing chain gearRefer to TIMING CHAIN subsection 11 Remove camshaft locking tool and crankshaft locki ng tool
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