2006-2009 Suzuki LT-R450 Service Manual, Page 79Get this manual
VALVE SEAT SERVICING The valve seats CD for both the intake valve (2) and exhaust valve CID are machined to three different anglesThe seat contact surface is cut at 45INTAKE seat angle seat width valve diameter valve guide I.D 30,45, 60 0.9 -1.1 mm (0.0350.043 in) 36 mm (1.42 in) EXHAUST 15,45, 60 0.9 -1 .1 mm (0.0350.043 in) 29 mm (1.14 in)
5.5005.512 mm 5.5005.512 mm (0 .21650.2170 in) (0.21650.2170 in)
I CAUTION I