2004 Bombardier Rally 200 Series Shop Manual, Page 128Get this manual
Section 03 ENGINE Subsection 08 (CYLINDER AND HEAD)
Torque cylinder head nuts no23 in criss-cross sequence at half of the recommended torque value in the exploded viewFinish tightening hexagonal nuts no23 crisscross with the recommended values in the exploded viewTorque cylinder head screws no24 with the recommended values in the exploded view2 2
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Cylinder head Timing chain Chain guide Head gasket
Inspection
Check for cracks between valve seats, if so, replace cylinder headCheck gasket for cracks or other damagesCheck mating surface between cylinder and cylinder head for contaminationIf so, clean both surfacesClean oil support through the cylinder head from contamination1