2011 Arctic Cat 366SE ATV Service Manual, Page 36Get this manual
Inspecting Camshaft Bearing Journal 1Inspect the bearing journal for scoring, seizure marks, or pitting2If excessive scoring, seizure marks, or pitting is found, the cylinder head assembly must be replaced
Measuring Camshaft to Cylinder Head Clearance
1Loosen the jam nuts and adjuster screwsCC145D
6If clearance is excessive, measure the journals of the camshaft
2Place strip of plasti-gauge in each of the camshaft lands in the cylinder head3Place the valve cover on the cylinder head and secure with the valve cover cap screwsTighten securelyNOTE: Do not rotate the camshaft when measuring clearanceCC287D
NOTE: If the journals are worn, replace the camshaft; then measure the clearance againIf it is still out of tolerance, replace the cylinder head