Impreza 2.5 RS Sedan AWD F4-2.5L SOHC (2002)
Rocker Arm Assembly: Description and Operation
Valve Rocker Assembly
^
The intake valve rocker arms and the exhaust valve rocker arms are installed on their own rocker shafts both of which are retained by the camshaft
caps.
^
The valve end of each rocker arm is provided with valve rocker adjusting screw and nut. Turning of this screw adjusts the valve clearance.
^
The exhaust valve rocker arms are Y-shaped, and each arm operates two exhaust valves simultaneously.
^
Each rocker shaft has an oil passage in it.
