2009-2012 Honda MUV700 Big Red Service Manual, Page 236Get this manual
CYLINDER HEADVALVECAMSHAFT Check the cylinder head for warpage with straight edge and feeler gauge
SERVICE LIMIT: 0.05 mm (0.002 in)
VALVE SPRING
Measure the valve spri ng ree length
SERVICE LIMITSInner: 36.3 mm (1 .43 in) Outer: 43.1 mm (1 .70 in)
VALVEVALVE GUIDE
Check that the valve moves smoothly in the guide Check the valve for bendingburning or abnormal wearMeasure each valve stem G.Dand record it