ENGINE MECHANICAL — Cylinder Head EM-23 (b) Remove the valve keepers, retainers, springs and valves. NOTE: Keep valves in order for reinstallation in the same manner. (c) Remove the valve stem oil seals. (d) Using a small screwdriver or magnet, remove the valve spring seats. INSPECTION AND CLEANING OF COMPONENTS 1. CLEAN TOP OF PISTONS AND TOP OF BLOCK (a) Turn the crankshaft and bring each piston to top dead center. Scrape the carbon from the piston top. (b) Remove all gasket material from the top of the block. Blow carbon and oil from the bolt holes. 2. CLEAN COMBUSTION CHAMBERS Using a wire brush, remove all the carbon from the combustion chambers. CAUTION: Be careful not to scratch the head gasket contact surface. 3. CLEAN VALVE GUIDES Using a valve guide brush and solvent, clean all the valve guides. 4. REMOVE GASKET MATERIAL Using a gasket scraper, remove all gasket materials from the manifold and head surface. CAUTION: Do not scratch the surface.