Aerio L4-2.3L (2006)
5) Install 1st timing chain by aligning dark blue plate (4) of 1st timing chain (3) and match mark (2) on idler sprocket (1).
6) Bring yellow plate (4) of 1st timing chain (3) into match with match mark (2) on crankshaft timing sprocket (1).
7) Apply engine oil to sliding surface of timing chain tensioner (1) and then install it as shown in figure. Tighten tensioner nut to specified torque.
Tightening torque
Timing chain tensioner nut (a): 25 Nm (2.5 kgf-cm, 18.0 ft. lbs.)
