2004-2009 Suzuki LT-Z250 Service Manual, Page 67Get this manual

2004-2009 Suzuki LT-Z250 Service Manual, Page 67

After fitting all valve guides, re-finish their guiding bores with the valve guide reamerBe sure to clean and oil the guide
must be continuous, without any breaksIn addition, the width of the dye ring, which is the valve seat width, must be within
the following specification Valve seat width Standard: 0.88 1.08 mm (0.035 0.043 in) If the valve seat is out of specification,
re-cut the seat VALVE SEAT SERVICE The valve seats for intake and exhaust valves are machined to two different anglesThe
seat contact surface is cut at 45 15 45 INTAKE N-212 N-608 EXHAUST N-121 N-122 Valve seat & 09916-21111: Valve seat cutter
set 09916-24900: Valve seat cutter set 09916-22480: Solid pilot (N-140-5.5) 09916-24450: Solid pilot (N-100-5.52) 09916-24935: