2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 79Get this manual
ENGINE Cylinder Head Inspection
Thoroughly clean cylinder head (B) surface to remove all traces of gasket material and carbonCAUTION: Use care not to damage sealing surface
Cylinder Head Disassembly WARNING
Wear eye protection or face shield during cylinder head disassembly and reassemblyNOTE: Keep all parts in order with respect to their location in the cylinder head1Using valve spring compressor (C), compress the valve spring and remove the split keeperB
Cylinder Head Warpage