2007-2009 Kawasaki KFX50 service manual, Page 122Get this manual
8CYLINDERPISTON SERVICE INFORMATION
GENERAL INSTRUCTIONS The cylinder and piston can be serviced with the engine installed in the frameBefore disassembly, clean the engine to prevent dust from entering the engineRemove all gasket material from the mating surfacesDo not use driver to pry between the cylinder and cylinder head, cylinder and crankcaseDo not damage the cylinder inside and the piston surfaceAfter disassembly, clean the removed parts before inspectionoil to movable partsSPECIFICATIONS Item I.DCylinder Warpage Cylindricity True roundness Ring-to-groove clearance Piston, piston ring Piston O.DPiston O.Dmeasuring position Piston-to-cylinder clearance Piston pin hole I.DPiston pin O.DPiston-to-piston pin clearance Connecting rod small end I.Dbore Connecting rod-to-piston pin clearance Ring end gap Top Second Top Second Oil ring 0.0150.055 (0.00060.022) 0.0150.055 (0.00060.022) 0.150.3 (0.0060.012) 0.30.45 (0.0120.018) 0.20.7 (0.0080.028) 38.97538.99 (1.5591.5596) (0.16) from bottom of skirt 0.010.04 (0.00040.0016) 12.99413 (0.519760.52) 0.0020.014 (0.000080.00056) 0.0160.04 (0.000640.0016) 0.1 (0.004) 12.96 (0.5184) 0.02 (0.0008) 0.06 (0.0024) 13.00213.008 (0.520080.52032) 13.04 (0.5216) Standard 3939.01 (1.561.5604) When assembling, apply the specified engine mm (in) Service Limit 39.1 (1.564) 0.05 (0.002) 0.05 (0.002) 0.05 (0.002) 0.09 (0.0036) 0.09 (0.0036) 0.5 (0.02) 0.65 (0.026) 0.9 (0.036) 38.9 (1.556)