(b) Using a gasket scraper, remove all the gasket material from the top surface of the cylinder block. (c) Using compressed air, blow carbon and oil from the bolt holes. CAUTION: Protect your eyes when using high pressure com- pressed air. 2. CLEAN CYLINDER HEAD A. Remove gasket material Using a gasket scraper, remove all the gasket material from the cylinder block surface. NOTICE: Be careful not to scratch the cylinder block contact surface. B. Clean combustion chambers Using a wire brush, remove all the carbon from the combus- tion chambers. NOTICE: Be careful not to scratch the cylinder block contact surface. C. Clean valve guide bushings Using a valve guide bushing brush and solvent, clean all the guide bushings. D. Clean cylinder head Using a soft brush and solvent, thoroughly clean the cylinder head.