2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 189Get this manual
CYLINDERPISTON
SERVICE INFORMATION
GENERAL
The cylinder and piston can be serviced with the engine installed in the frameTake care not to damage the cylinder wall and pistonBe careful not to damage the mating surfaces when removing the cylinderRocker arm and valve lubricating oil is fed through the oil passage in the cylinderClean the oil passage before installing the cylinder When disassembling, mark and store the disassembled parts to ensure that they are reinstalled in their original locations
SPECIFICATIONS
Unit: mm (in) ITEM Cylinder I.DOut of round Taper Warpage Piston, piston pin, piston ring Piston O.Dat 15 (0.6) from bottom Piston pin hole I.DPiston pin O.DPiston-to-piston pin clearance Piston ring end gap Piston ring-to-ring groove clearance Cylinder-to-piston clearance Connecting rod small end I.DConnecting rod-to-piston pin clearance 20.020 20.041 (0.7882 0.7890) 0.020 0.047 (0.0008 0.0019) 20.07 (0.790) 0.10 (0.004) Top Second