2007-2009 Suzuki LTZ90 factory service manual, Page 68Get this manual

2007-2009 Suzuki LTZ90 factory service manual, Page 68

Cool down the new valve guides in freezer for about one hour and heat the cylinder head to 100 150 (212 302 F) with hot
reamer Clean and engine oil the guides after reaming09916-34570: Valve guide reamer (5.0 mm) 09916-34542: Reamer handle NOTE:Be
sure to cool down the cylinder head to ambient air temperature Insert the reamer from the combustion chamber and always turn
the reamer handle clockwiseVALVE SEAT WIDTH INSPECTION Visually check for valve seat width on each valve face If the valve
face has worn abnormally, replace the valve Coat the valve seat with red lead (Persian Blue) and set the valve in placeRotate
the valve with light pressure Check that the transferred red lead (blue) on the valve face is uniform all around and in center