2008-2010 Kawasaki KFX450R Factory Service Manual, Page 195Get this manual
5-34 ENGINE TOP END Cylinder and Piston
mix up the top ring and second ring Do notthe top ring [A] so that the "R" mark [B] faces up Install the second ring [C] so that the "RN" mark [D] faces Install up
If new piston or cylinder is used, check piston to cylinder clearance (see PistonCylinder Clearance), and use new piston rings
Apply engine oil to the inside wall of the small end of the connecting rod[A] on the top Face the circle markof the engine.of the piston must point toward the front [B]