2011 Arctic Cat 350/425 ATV Service Manual, Page 38Get this manual
Installing Valves 1Apply grease to the inside surface of the valve seals; then place lower spring seat and valve guide seal over each valve guide CC131D
3Push the valve from side to side; then from top to bottom4Maximum "wobble" deflection must not exceed specificationsMeasuring Valve Guide (Inside Diameter) 1Insert snap gauge 12 way down into each valve guide bore; then remove the gauge and measure it with micrometer2Acceptable inside diameter range must be within specifications3If valve guide is out of tolerance, the cylinder head must be replacedServicing ValvesValve GuidesValve Seats If valves, valve guides, or valve seats require servicing or replacement, Arctic Cat recommends that the components be taken to qualified machine shop for servicingCC144D
2Insert each valve into its original valve location3Install the valve springs with the painted end of the spring facing away from the cylinder headNOTE: If the paint is not visible, install the ends of the springs with the closest wound coils toward the head