2008 Honda Aquatrax ARX1500T3/T3D factory service manual, Page 262Get this manual
CYLINDER HEADVALVE INSPECTION Be careful not to damage the gasket surface
CYLINDER HEAD Remove carbon deposits from the combustion chamberCheck the spark plug hole and valve areas for cracks
Check the cylinder head for warpage with straight edge and feeler gauge
SERVICE LIMIT: 0.10 (0.004 in)
Check the valve lifter bore for scoring, scratches or abnormal wearMeasure each valve lifter bore I.D