Timing Component Alignment Marks: Locations

Install the timing chain drive sprocket to the crankshaft with the timing mark in the 5 o'clock position.





Important:

There are three colored links on the timing chain. Two links are of matching color and one link is of a unique color. Use the following procedure to line up the links with the sprockets. Orient the chain so that the colored links are visible.
Always use new sprocket bolts.

Assemble the intake camshaft sprocket to the timing chain with the timing mark lined up with the uniquely colored link (1). Hand tighten a new intake camshaft sprocket bolt.





Lower the timing chain through the opening in the cylinder head. Use care to ensure that the chain goes around both sides of the cylinder block bosses (1, 2).





Route the timing chain around the crankshaft sprocket and line up the first matching colored link (2) with the timing mark on the crankshaft sprocket, in approximately the 5 o'clock position.





Notice: Refer to Fastener Notice in Service Precautions.

Install the adjustable timing chain guide through the opening in the cylinder head and install the adjustable timing chain bolt.





Install the exhaust camshaft sprocket and a new bolt loosely onto the exhaust camshaft.





Align the timing mark on the sprocket with the last matching colored link (3). Install the bolt finger tight.





Important: Do not turn the camshaft more than 1/2 turn in either direction. To do so may cause valve to piston contact. This may damage a valve and/or a piston. If the camshaft is 180° out of time, use the following procedure to re-align the cam.

Using a 24 mm wrench, first turn the intake camshaft until the alignment feature on the back of the camshaft sprocket seats in the notch in the front of the intake camshaft.
Turn the crankshaft 45° in either direction.
Turn the intake cam to the appropriate location.
Turn the crankshaft back to top dead center.
When the sprocket seats on the cam, tighten the sprocket bolt hand tight.
Verify that all of the colored links and the appropriate timing marks are still aligned. If they are not, repeat the portion of the procedure necessary to align the timing marks.