Mercury 3.0 MPI ECT - Draining the Seawater System

Section 4 - Maintenance
90-8M0113856 eng DECEMBER 2015 Page 69
Mercury MerCruiser power packages are equipped with anodes to help protect them from galvanic corrosion under moderate
conditions. However, for severe conditions (i.e. when using a stainless steel propeller, docking/mooring in areas with rapid
water flow, etc.), it is recommended that a Quicksilver Anti‑Corrosion Anode Kit and/or a MerCathode System be installed
(some models have a MerCathode System as standard equipment).
1 - Gearcase anodic plate
2 - Ventilation plate anode
3 - Gimbal mounted anodic block
4 - MerCathode System
5 - Anode kit
6 - Trim cylinder anodes
7 - Bearing carrier anodes (Alpha only)
8 - Propshaft Anode (Bravo III standard)
IMPORTANT: Replace sacrificial anodes if eroded 50 percent or more.
The following sacrificial anodes are installed at different locations on your power package. These anodes help protect against
galvanic corrosion by sacrificing its metal to be slowly eroded instead of the metal components on the power package.
5
6
1
7
8
2
4
3
1
2
3
4
5
6
7
8
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