Rocker Arm Cover
Installation
1. Place a new rocker arm cover gasket in position.
a - Rocker arm cover gasket
b - Rocker arm cover
c - Grommets
d - Bolts
2. Install the rocker arm cover. Tighten the bolts to the specified torque.
Description
Nm lb‑in. lb‑ft
Rocker arm cover bolt 12 106.2 –
3. Install any items that were removed.
4. Connect the crankcase ventilation hoses.
5.
Refer to Section 7 for Exhaust Manifold Installation.
Flywheel
Cleaning and Inspection
1. Clean the mating surfaces of the flywheel and crankshaft. Remove any burrs. The mating surfaces must be clean, bare
metal.
2. Inspect the flywheel ring gear for worn and missing teeth.
3. Inspect the splines in the drive plate or coupler for damage or excessive wear.
4. Replace components as necessary.
Installation
NOTE: Two designs of flywheels are used. The first design has a three hole pattern in the flywheel. The second design has a
six hole pattern in the flywheel.
NOTE: If the crankshaft is to be replaced on a driveshaft extension application, but the old pilot bushing is to be reused, the
bushing can be removed without damage by filling the pilot bushing cavity with grease, then inserting an old transmission input
shaft into the bore of the bushing and hitting it with a hammer. This will create hydraulic pressure in the pilot bushing cavity
forcing the bushing out.
1. Clean the mating surfaces of the flywheel and the crankshaft until the metal is bare.
Engine Inspection and Assembly
Page 3B-62 © 2016 Mercury Marine 90-8M0099748 eng DECEMBER 2015
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