Suzuki DF25/DF30 Four Stroke Service Manual, Page 17Get this manual
GENERAL INFORMATION Data DF25Q25QE DF25QR25T
DF30Q30QE DF30QR30T
VALVEVALVE GUIDE
Valve diameter Valve clearance (Cold engine condition) Valve seat angle Valve guide to valve stem clearance IN EX IN EX STD STD IN EX IN STD Limit STD Limit STD mm (in) mm (in) mm (in) mm (in) degree degree mm (in) mm (in) mm (in) mm (in) mm (in) 23.1 (0.91) 29.6 (1.17) 0.13 0.17 (0.005 0.007) 0.13 0.17 (0.005 0.007) 15, 45 15, 45 0.020 0.047 (0.0008 0.0019) 0.070 (0.0028) 0.035 0.062 (0.0014 0.0024) 0.090 (0.0035) 5.500 5.512 (0.2165 0.2170)
EX Valve guide inside diameter Valve guide protrusion Valve stem outside diameter Valve stem end length Valve stem end deflection Valve stem runout Valve head radial runout Valve head thickness