2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 161Get this manual
CYLINDER HEADIVALVE Check the cylinder head for warpage with straight edge and feeler gauge across the stud holesSERVICE LIMIT: 0.10 mm (0.004 inl
VALVE SPRING Check the valve springs for fatigue or damageMeasure the valve spring free lengthSERVICE LIMITSInner: 42.08 mm (1 .657 in) Outer: 42.76 mm (1.683 in )
VALVE VALVE GUIDE Check that the valve moves smoothly in the guideCheck the valve for bending, burning or abnormal wearMeasure each valve stem D.Dand record itSERVICE LIMITS: IN: 5.95 mm (0.234 in) EX: 5.93 mm (0.233 in)