2009 Arctic Cat 366 ATV Service Manual, Page 38Get this manual

2009 Arctic Cat 366 ATV Service Manual, Page 38

3Acceptable diameter range (exhaust valve) must be within specificationsMeasuring Valve FaceSeat Width 1Using micrometer, measure the width of the valve face CC134D

ATV-1004

2Acceptable width must be at or above specificationsMeasuring Valve Face Radial Runout

NOTE: The valve seals must be replaced