Aerio AWD L4-2.0L (2003)
1) Check that match mark (1) on crank timing sprocket is in match with timing mark (2) on lower crankcase as shown in figure.
2) Check that arrow mark (1) on idler sprocket faces upward as shown in figure.
3) Check that knock pins of intake (2) and exhaust (3) camshafts are aligned with timing marks on cylinder head as shown in figure.