Sterndrive Corrosion Protection Components - Mercury TDI 3.0L Owner's Operation And Maintenance Manual

Section 4 - Maintenance
2. Install the anode assembly with the washer into the intercooler end cover and 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 the seawater pickup pump is supplied cooling water.
5. Start the engine and check for leaks.

Sterndrive Corrosion Protection Components

To help control the effects of galvanic corrosion, sterndrives come with several sacrificial anodes and other corrosion protection
devices. For a more comprehensive explanation of corrosion and corrosion protection, refer to the Marine Corrosion
Protection Guide.
Page 68
a -
a
50781
f
a
b
c
Anode
NOTICE
Typical single sterndrive
a - Anode (Alpha models), MerCathode (Bravo models)
b - Ventilation plate anode
c - Trim cylinder anodes
d - Bearing carrier anodes
e - Gearcase anodic plate
f - Anode kit on hull (if equipped)
e
d
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90-8M0145546 MAY 2018
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