2011 Yamaha Raptor 125 Factory Service Manual, Page 177Get this manual
VALVES AND VALVE SPRINGS Valve-stem-to-valve-guide clearance Valve-stem-to-valve-guide clearance (intake) 0.0100.037 mm (0.0004 0.0015 in) Limit 0.080 mm (0.0032 in) Valve-stem-to-valve-guide clearance (exhaust) 0.0250.052 mm (0.0010 0.0020 in) Limit 0.100 mm (0.0039 in)
bInstall the new valve guide with the valve guide installer "2" and valve guide remover "1"
cAfter installing the valve guide, bore the valve guide with the valve guide reamer "3" to obtain the proper valve-stem-to-valveguide clearance