1990 Nissan Micra Cylinder Head Assembly & Installation - Timing Marks (EM-15)

This is page EM-15 from a factory service manual's Engine Mechanical section covering cylinder head assembly and installation. The assembly portion (continued) covers step 6, installing the rocker shaft with rocker arms, with an exploded diagram showing the timing belt side orientation, center retainer, bolt stoppers, rocker shaft, punched mark, and vehicle front direction. Step 7 instructs hitting bolt stoppers to attach them using a socket wrench or equivalent, with a bold caution to always replace bolt stoppers with new ones. Step 8 covers installing the oil pump idler gear and oil regulator spring, cautioning about spring direction, with a torque spec of 6-7 N·m (0.6-0.7 kg-m, 4.3-5.1 ft-lb) for the oil pump spring stopper. The installation section begins with setting the No. 1 cylinder at TDC on the compression stroke: aligning the crankshaft pulley timing mark with the mark on the main bearing cap (SEM981) and aligning the camshaft pulley timing mark with the mark on the cylinder head (SEM982). A key warning states not to rotate the crankshaft and camshaft separately because valves will hit piston heads. Illustration references include SEM032B, SEM001A, SEM033B, SEM981, and SEM982.