2011 Polaris Ranger RZR ATV Service Manual, Page 81Get this manual
ENGINE 9Lubricate the valve guides with clean engine oil, and apply oil or water based lapping compound to the face of the valve
Cylinder Head Reassembly
NOTE: Assemble the valves one at time to maintain proper order1234Apply engine oil to valve guides and seatsCoat valve stem with molybdenum disulfide grease or PS-4 PLUS Synthetic engine oilInstall valve carefully with rotating motion to avoid damaging valve sealValve seals should be installed after the valves are in the head to avoid valve seal damageInstall new valve seals on valve guidesDip valve spring and retainer in clean engine oil and installPlace retainer on spring and install Valve Spring Compressor (PU-45257)Install split keepers with the gap even on both sides
NOTE: Lapping is not required with an interference angle valve job10Insert the valve into its respective guide and lap using lapping tool or section of fuel line connected to the valve stem