Download DISASSEMBLY 1. Using a tool remove the cylinder head bolts in the order shown in the illustration. 2. Using the special tool (09222-28000, 09222-28100), remove the valve retainer lock. Next remove the spring retainer, valve spring, spring seat and valve. Arrange these parts so that they can be reinstalled in their original positions. 3. Remove the valve stem seals with pliers. Do not reuse the valve stem seals. INSPECTION CYLINDER HEAD 1. Check the cylinder head for cracks, damage and coolant leakage. If cracked, replace the cylinder head. 2. Remove scale, sealing compound and carbon deopsits completely. After cleaning the oil passages, apply compressed air to verify that the passages are not clogged. 3. Check the cylinder head surface for flatness in the direction as shown in the illustration. If flatness exceeds the service limit in any direcftion, either replace the cylinder head or machine the cylinder head matching surface lightly. Flatness of cylinder head gasket surface Standard : Less than 0.03 mm (0.0012 in.) Limit : 0.2 mm (0.008 in.) VALVES 1. Using a wire brush, clean the valve thoroughly.