Mercury 7T4Z-9431-B Exhaust Manifold Assembly

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Remove the two bolts and the steering gear heat shield to remove the converter heat shield.

Using a scraper, remove all gasket material and carbon deposits from the exhaust manifold and cylinder head mating surfaces. If the gasket was leaking, check the manifold for warpage and have it resurfaced if necessary. Caution: Be very careful when scraping on aluminum engine parts. Aluminum is soft and gouges easily. Severely gouged parts may require replacement.

Remove and discard the six nuts securing the exhaust manifold and the manifold gasket.

Remove and discard the six exhaust manifold mounting nuts and the manifold gasket.

Use a stud removal tool or two nuts tightened against each other to remove the old studs from the cylinder head.