Installation; Antifouling Paint; Lubrication; Throttle Cable - Mercury MR504LB3 Manual

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Sacrificial anode measurements (new)
Diameter
3.
Discard the sealing washer.

Installation

1.
Install a new sealing washer on the anode assembly (anode plug with the sacrificial anode).
a
b
2.
Install the anode assembly and washer into the aftercooler end cover. Tighten securely.
3.
Unplug and connect the seawater inlet hose, or open the seacock if equipped.
Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide
a sufficient supply of water to the water inlets during operation.
4.
Ensure that both the sterndrive and engine seawater pickup pumps are supplied sufficient cooling water.
5.
Start the engine and check for leaks.

Antifouling Paint

IMPORTANT: Corrosion damage that results from the improper application of anti‑fouling paint is not covered by the limited
warranty.
In some areas it may be advisable to paint the bottom of the boat to help prevent marine growth. Contact a Mercury Diesel
authorized repair facility for recommendations for your boat.

Lubrication

Throttle Cable

Lubricate the pivot points and guide contact surfaces.
Tube Ref No.
SAE Engine Oil 30W
80
90-8M0089579
MARCH 2014
eng
a -
Anode assembly
b -
Sealing washer
19227
a a
b
Description
NOTICE
23643
Where Used
Throttle cable pivot points and guide contact surfaces
Section 5 - Maintenance
16 mm (5/8 in.)
a -
Pivot points
b -
Guide contact surfaces
Part No.
Obtain Locally
Page 69

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