2005 Polaris Sportsman 700/800 EFI Service Manual, Page 76Get this manual
CYLINDER HEAD INSPECTION
1Thoroughly clean cylinder head surface to remove all traces of gasket material and carbonCAUTION: Use care not to damage sealing surface
WARNING
Wear eye protection or face shield during cylinder head disassembly and reassembly
CYLINDER HEAD WARPAGE
1Lay straight edge (A) across the surface of the cylinder head (B) at several different points and measure warpage by inserting feeler gauge between the straight edge and the cylinder head surfaceIf warpage exceeds the service limit, replace the cylinder headA
1Having already removed the valve cover, rocker arms and pushrods, align the cylinder to be worked on at top dead centerInstall the Valve Pressure Hose (PU-45652) into the spark plug holeHook the hose to an air compressor and supply 50 to100 psi to the hoseThis will seat the valves during valve spring removalDo not remove air from the hose at anytime until reassembly is completed2Using the Valve Spring Compressor (PU-45257), compress the valve spring and remove the valve keepersNOTE: small parts magnet (A) can aid in the removal of the retainers (B)B