NOTE: To prevent the rocker arm assembly from coming apart, leave the camshaft holder bolts in the holes. After wiping down the camshaft and the journals in the cylinder head, lubricate both surfaces and install the camshaft. Clean and install the oil control orifice (A) with a new O-ring (B). Turn the camshaft until its keyway (C) is facing up (No. 1 piston TDC). Loosen all the valve adjusting screws. Apply liquid gasket to the head mating surface (shaded areas) of the No. 1 and No. 5 camshaft holders.

Set the rocker arm assembly in place and loosely install the bolts. Make sure that the rocker arms are properly positioned on the valve stems. Tighten each bolt 2 turns at a time, in the sequence shown below to ensure that the rockers do not bind on the valves. Specified torque: 8 mm bolts: 20 Nm (2.0 kgf/m, 14 lbf/ft)   Apply engine oil to the bolt threads. 6 mm bolts: 12 Nm (1.2 kgf/m, 8.7 lbf/ft)   Apply engine oil to the bolt threads. 6 mm bolts: (11), (12), (13), (14)