Mercury 6L8Z-6049-B Cylinder Head Assembly

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Remove the intake duct from the air filter housing.

The cylinder head bolts are torque-to-yield type and must be discarded after use. Using a torque wrench and an angle gauge, tighten the cylinder head bolts in the specified sequence to the required torque. Follow the "torque angle" or "torque-to-yield" method exactly, using a breaker bar and a special torque angle adapter to tighten the bolts to the required angle.

If only one cylinder head requires removal, disregard the steps for the other cylinder head. For the rear cylinder head, you only need to remove the timing chain, camshafts, and rocker arms from the rear cylinder head; the front can remain installed. If the front cylinder head must be removed, you must first remove the rear timing chain for access to the front chain, while the rear camshafts and rocker arms can remain installed.

Drain the cooling system.