MerCruiser 8.1 MAG, Owner'S Manual

Page: 109 / 152

Section 5 - Maintenance
90-864839070 AUGUST 2007 Page 101
Reference Electrode 91‑76675T 1
9188
Senses and electrical current in the water when testing the
MerCathode system. Use to check hull potential.
Power Package Exterior Surfaces
1. Spray the entire power package at recommended intervals with Corrosion Guard.
Follow the instructions on the can for proper application.
Tube Ref No. Description Where Used Part No.
120
Corrosion Guard Painted surfaces 92-802878 55
2. Clean the entire power package. External surfaces that have become bare should be
repainted with the recommended primer and spray paint at recommended intervals.
Description Part Number
Mercury Light Gray Primer
Painted surfaces
92‑802878 52
Mercury Phantom Black 92‑802878Q 1
Boat Bottom Care
To achieve maximum performance and fuel economy, the boat bottom must be kept clean.
Accumulation of marine growth or other foreign matter can greatly reduce boat speed and
increase fuel consumption. To ensure best performance and efficiency, periodically clean
the boat bottom in accordance with manufacturer's recommendations.
In some areas, it may be advisable to paint the bottom to help prevent marine growth. Refer
to the following information for special notes about the use of anti‑fouling paints.
Anti‑fouling Paint
IMPORTANT: Corrosion damage that results from the improper application of anti‑fouling
paint will not be covered by the limited warranty.
You may apply anti‑fouling paint to the boat hull and boat transom but you must observe
the following precautions:
IMPORTANT: Do not paint or pressure‑wash the anodes or the MerCathode System
reference electrode and anode. Doing so will render them ineffective as inhibitors of
galvanic corrosion.