Cylinder head and Valves/Cleaning valve guides CLEANING VALVE SEATS Use an electric hand drill with D17024BR End Brush to remove all carbon deposits. Z20754 -UN-25MAY89 05 11 CD,3274,G05,9 -19-24FEB92 CLEANING VALVE GUIDES Using a plastic brush, clean valve guides. NOTE: A few drops of light oil or kerosene will make cleaning of valve guides easier. CD7254 -UN-07MAR95 CD,3274,G05,10 -19-24FEB92 CTM3274 (01JUL99) 05-11 Saran Liter Engines 060799 PN=48