2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 55Get this manual
2Acceptable inside diameter range must be within specifications3If valve guide is out of tolerance, it 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 servicing NOTE: If the paint is not visible, install the ends of the springs with the closest wound coils toward the head
! CAUTION
If any valve is discolored or pitted or if the seating surface is worn, the valve must be replacedDo not attempt to grind valve or severe engine damage may occurATV-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