Rocker Arm Assembly Installation

Make sure the crankshaft pulley is at top dead center (TDC). Align the TDC mark (A) on the crankshaft pulley with the pointer (B) on the chain case.

Fig 1: Aligning TDC Mark On Crankshaft Pulley With Pointer On Chain Case
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Insert the bolts (A) into the rocker shaft holder, then install the rocker arm assembly (B).

Fig 2: Installing Rocker Arm Assembly
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the alignment of the TDC marks (A) on the cam chain sprocket with the cylinder head surface.

Fig 3: Aligning TDC Marks On Intake Camshaft Gear And Exhaust Camshaft Gear
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Align the TDC marks (B) on the intake camshaft gear (C) and the exhaust camshaft gear (D), and install the camshafts.
Apply new engine oil to the bolt threads of all the camshaft holder bolts.
Put the camshaft holders on the cylinder head, then tighten all bolts to 22 N.m (2.2 kgf.m, 16 lbf.ft). To prevent damaging the camshafts, tighten the bolts two turns at a time, in the sequence shown.

Fig 4: Identifying Tightening Sequence Of Camshaft Bolts
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Adjust the valve clearance (see VALVE CLEARANCE ADJUSTMENT ).
Install the cylinder head cover (see CYLINDER HEAD COVER INSTALLATION ).