2003 Kawasaki KLF250 Service Manual., Page 66Get this manual
ENGINE TOP END 4-7 Specifications
Item Valve Guide Clearance (wobble method): Exhaust Standard 0.05 0.11 mm (0.0020 0.0043 in Inlet Valve Seat Cutting Angle Valve Stem Bend Valve Seat Surface: Width: Exhaust Inlet Outside Diameter: Exhaust Inlet Valve spring free length: Inner Outer Cylinder, Piston Cylinder Inside Diameter Piston Diameter PistonCylinder Clearance Piston RingGroove Clearance: Top Second Piston Ring Groove Width: Top Second Oil Piston Ring Thickness: Top Second 0.02 0.08 mm (0.0008 0.0032 in 45, 32, 60 Service Limit 0.27 mm (0.0106 in 0.23 mm (0.0091 in TIR 0.05 mm