2010 Polaris Sportsman 850 Service Manual, Page 132Get this manual

2010 Polaris Sportsman 850 Service Manual, Page 132

ENGINE Cylinder Head Assembly NOTE: Assemble valves one at time to maintain proper order1234Apply engine oil to valve guides
leakage around the valvesThe valve seats should hold fluid with no seepageRepeat for exhaust valves by pouring fluid into
each exhaust port (C) NOTE: Install valve spring with the orange coil marking towards the top789Place top retainer on springCompress
springInstall split keepers with gap even on both sides NOTE: To prevent damage to the valve seals, do not compress the valve
spring more than necessary to install the keepersA small magnet can be used to aid installation 10Repeat procedure for remaining
valvesWhen all valves are installed, tap lightly with soft faced hammer on the end of the valves to seat the split keepers