2008 Arctic Cat ATVs factory service and repair manual, Page 289Get this manual
7Place the head gasket into position on the cylinderPlace the alignment pins into position; then place the head assembly into position on the cylinder
10Align the TDC line on the rotorlflywheel with the index mark on the magneto cover; then install the camshaft idler into the cam chain and align the punch mark (1) with the index rib (2)Adjust the idler in the chain as necessary to align the marks
8Install the five 10 mm cylinder head cap screws and tighten in the sequence shown to an initial torque of 18 ft-lb; then using the same sequence, tighten to final torque of 27 ft-lbiNOTE: Apply engine oil to the threads and both
sides of the washers before installing the cylinder head cap screwsWhen checking the alignment, place tension on the front of the chain by pulling up on the idler and rotating to the rearThe punch mark (I), index rib (2), and gear tooth root (3) must align or engine damage will occurIf all three cannot be aligned, remove the idler and rotate the crankshaft one turn (360') and repeal step 10