2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 218Get this manual
Servicing 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 servicing ! CAUTION
If valves are discolored or pitted or if the seating surface is worn, the valve must be replacedDo not attempt to grind the valves or severe engine damage may occur
ATV-1011A
Measuring Rocker Arm (Inside Diameter) 1Using dial calipers, measure the inside diameter of the rocker arm2Acceptable inside diameter range must be within specificationsMeasuring Rocker Arm Shaft (Outside Diameter) 1Using micrometer, measure the outside diameter of the rocker arm shaft2Acceptable outside diameter range must be within specificationsInstalling Valves 1Apply grease to the inside surface of the valve seals; then place lower spring seat and valve guide seal over each valve guide
4Place spring retainer over the valve springs; then using the valve spring compressor, compress the valve springs and install the valve cotters