
Section 5 - Maintenance
90-899883154 JANUARY 2008
Page 97
MerCathode System—
The electrode assembly replaces the anode block. The system
should be tested to ensure adequate output. The test should be performed where boat is
moored, using Quicksilver Reference Electrode and Test Meter.
Description
Location
Figure
Gearcase anode plate
Underside of the lower gearcase
20336
Ventilation plate anode
Front of the gearcase
20338
MerCathode System
The MerCathode electrode is mounted
to the underside of the gimbal housing.
The MerCathode controler is mounted
on the engine or on the boat transom.
The controler harness connects to the
electrode harness.
20340
Anode kit (if equipped)
The boat transom
20341
Trim cylinder anodes
Mounted on each of the trim cylinders
20342
Propshaft anode (Bravo Three)
Bbehind the aft propeller
20344
Checking the Quicksilver MerCathode System
The MerCathode system should be tested to ensure adequate output. Perform the test
where boat is moored, using the reference electrode and test meter. Contact your
authorized Mercury MerCruiser dealer for service and information .
Reference Electrode
91‑76675T 1
9188
Senses and electrical current in the water when testing the
MerCathode system. Use to check hull potential.