2007 Arctic Cat Four-Stroke Factory Service Manual, Page 137Get this manual
! NOTE: This procedure must be done without applying any force to the feeler gauge! NOTE: To determine the valve clearance, use feeler gauge in the following mannerUsing the illustration below to note that one intake valve set and one exhaust valve set at time will be checked before rotating the crankshaft to the next set of valves! NOTE: All valve clearance checks should be done prior to any adjusting or shimming; therefore, record each valve clearance value in the sequence for reference AO230
9Using 17 mm socket and ratchet, rotate the crankshaft clockwise until the #1 piston is at TDC; then rotate the crankshaft clockwise until the intake cam lobes are at 180 to the shim face