Clean the bottoms of the pistons and the surface of the cylinder block mating with the cylinder head. Turning the crankshaft, sequentially set the pistons to TDC. With a scraper, clean the surfaces of the piston bottoms from carbon deposits. Using a scraper, remove the remnants of the head gasket on the surface of the cylinder block connector. Use compressed air to remove carbon deposits and head gasket residue from the surfaces and from the bolt holes.
Clean the cylinder head. Clean the surface of the head of the block from the remnants of the head gasket. Clean the surfaces of the combustion chambers of the block head with a wire brush, removing any remaining carbon deposits. Clean the surface of the cylinder head (mating with the surface of the cylinder block), using a soft brush and solvent. Clean the valve guide bores with a brush and solvent.