2. Apply engine oil to the seal to retainer mating surfaces, the seal lip.
a - Flywheel pilot flange
b - Seal to retainer mating surface
Tube Ref No. Description Where Used Part No.
80
SAE Engine Oil 30W The seal to retainer mating surfaces, the seal lip Obtain Locally
3. Orient the seal so that the seal lip is facing toward the inside of the engine and place squarely into the rear main seal
installer.
IMPORTANT: The oil seal must be orientated correctly to prevent oil leaks.
IMPORTANT: Note the direction of the rear oil seal. The new design seal is a reverse style as opposed to what has been
used. "THIS SIDE OUT" has been stamped into the seal as shown in the graphic.
NOTE: The dowel pin on the crankshaft may have to be removed to allow seal installation using tool or tool may need
modification.
Description
Part Number
Kent‑Moore rear main seal installer J35621‑B
4. Install the seal using the rear main seal installer.
a. Attach the rear main seal installer to the crankshaft and evenly tighten the attaching screws until the installer is
squarely flush against the engine.
b. Turn the installer wing‑nut clockwise until the seal is evenly seated in the seal retainer.
c. Turn the installer wing‑nut counterclockwise to release the installer from the oil seal.
5. Remove the installer.
6. Wipe off any excess oil.
Oil Pan
Inspection
1. Inspect the oil pan for cracks, holes, warped sealing surfaces, or other damage.
Engine Inspection and Assembly
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 3B-39
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