2010 Arctic Cat Prowler XT/XTX/XTZ ATV Service Manual, Page 13Get this manual
NOTE: Rotating the valve adjuster dial counterclockwise will open the valvetappet clearance by 0.05 mm (0.002 in per mark 7While holding the adjuster dial at the proper clearance setting, tighten the jam nut securely with the valve adjuster handle8Rotate the engine 270 to the TDC position of the rear cylinder; then repeat steps 4-7 for the rear cylinder9Place the tappet covers with O-rings into position; then tighten the covers securely10Install the timing inspection plug, spark plugs, and crankshaft end cap
3Using feeler gauge, check each valvetappet clearanceIf clearance is not within specifications, loosen the jam nut and rotate the tappet adjuster screw until the clearance is within specificationsTighten each jam nut securely after completing the adjustment
CAUTION
The feeler gauge must be positioned at the same angle as the valve and valve adjuster for an accurate measurement of clearanceFailure to measure the valve clearance accurately could cause valve component damageVALVETAPPET CLEARANCE
Intake Exhaust 0.1016 mm (0.004 in 0.1524 mm (0.006 in