Section 5 - Maintenance
Page 88 90-864197076 NOVEMBER 2008
MerCathode System— Electrode assembly replaces the Anode block. 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
Mounted on the underside of the lower
gearcase.
20336
Ventilation plate anode Mounted on the 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) Mounted to the boat transom.
20341
Trim cylinder anodes Mounted on each of the trim cylinders.
20342
Bearing carrier anode (Bravo One)
Located in front of the propeller,
between the front side of the propeller
and the gear housing.
20343
Propshaft anode (Bravo Three) Located behind 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 .
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