MerCruiser 3.0 MPI, Owner'S Manual

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Section 5 - Maintenance
90-899883272 MARCH 2008 Page 79
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).
5
6
1
7
8
2 4 3
1 2
3 4
5
6
7
8
17276
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.