2004 Ski-Doo Elite Factory Service Manual, Page 140Get this manual

Section 04 ENGINE Subsection 08 (CYLINDER HEAD AND VALVES)
Use camshaft locking tool (PN 529 035 839)Rotate camshaft so that tool can be pushed in camshaft hole and lock camshaft in place2

R1503motr91A

R1503motr111A

1Rocker arm shaft 2Rocker arm shaft notches

1Camshaft locking tool

Then, the camshaft sprocket lines should be lined up as shown in the following illustration1 1

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