2008 Arctic Cat 366 ATV Service Manual, Page 13Get this manual
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 0.076-0.127 mm (0.003-0.005 in 0.152-0.203 mm (0.006-0.008 in
CHECKING AND CLEANING DRAIN 1Inspect the drain on the filter housing cover and clean out any dirt or debris
CC007DC KC0056C
4Install the timing inspection plug5Place the two tappet covers with O-rings into position; then tighten the covers securely6Install the spark plug; then install the timing inspection plug