2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 187Get this manual

2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 187

Servicing ValvesValve GuidesValve Seats If valves, valve guides, or valve seats require servicing or replacement, Arctic
be within specificationsInstalling Valves PISTON ASSEMBLY NOTE: Whenever piston, rings, or pin are out of tolerance, they
must be replacedCC132D 1Apply grease to the inside surface of the valve seals; then place lower spring seat and valve guide
seal over each valve guide CleaningInspecting Piston 1Using non-metallic carbon removal tool, remove any carbon buildup from
the dome of the piston2Inspect the piston for cracks in the piston pin, dome, and skirt areas3Inspect the piston for seizure
marks or scuffingRepair with #400 grit wet-or-dry sandpaper and water or honing oilCC144D 2Insert each valve into its original
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 NOTE: If scuffing or seizure