>> B << Rocker Shaft Spring/Rocker Arms And Rocker Arm Shaft Installation

WARNING: This page is about a different car, the 2003 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

Install the exhaust side rocker arm "C"/shaft assembly to the cylinder head.
Install the inlet side rocker arm "A" and "B"/shaft assembly to the cylinder head.
Install the rocker shaft spring to the intake side rocker arm shaft as illustrated.

Fig 1: Installing Rocker Shaft Spring To Intake Side Rocker Arm Shaft
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Make sure that the notch in the end of the rocker arm shaft is facing the direction shown.

Fig 2: Identifying Rocker Arm Shaft Notches Installation Direction
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.