2008-2010 Kawasaki KFX450R Factory Service Manual, Page 196Get this manual
ENGINE TOP END 5-35 Cylinder and Piston
Apply engine oil to the cylinder bore.ring endsthe position Determinecylinder whileof the piston the piston rings with Install the compressing your fingers or the special toolsSpecial ToolsPiston Ring Compressor Grip [A]: 57001 -1095 Piston Ring Compressor Belt, 95 108 [B]: 57001-1358
Install the removed partsCylinder Wear
Refer to the Cylinder Wear Inspection in Periodic Maintenance chapterPiston Wear
a micrometer, Usingpiston 8.5 mm measure the outside diameter [A] of each (0.33 in [B] up from the bottom of the piston at right angle to the direction of the piston pinIf the pistons outside diameter is smaller than the service limit, replace the pistonPiston Diameter Standard: 95.964 95.979 mm (3.7781 3.7787 in Service Limit: 95.81 mm (3.772 in