2003 Kawasaki KLF250 Service Manual., Page 79Get this manual
4-20 ENGINE TOP END Cylinder Head
Compression Too High Possible Problems Solutions Remove carbon Carbon build up on piston Check possible oil leaks head and cylinder head to combustion chamber Cylinder head or base gasket too thin Replace gaskets References Piston Cleaning and Cylinder Head Cleaning Valve Stem Oil Seal Inspection, Valve Stem Diameter, Valve Guide Inside Diameter, and check piston oil ring for visible damageCylinder Head Removal, Cylinder Head Installation, Cylinder Removal, and Cylinder Installation
Wet CompressionNo Change Possible Problems Solutions Adjustment Valve Seat Inspection, and Valve Seat Repair Valve Visual Inspection, and Valve Head Thickness Cylinder Head Removal, and Cylinder Head Installation Cylinder Head Warp References Valve Clearance Check, and Valve Clearance