Anti-Corrosion Protection - BRP Evinrude E-TEC G2 Service Manual

Cleaning
WARNING
Wear safety glasses to avoid personal injury,
and set compressed air pressure to less than
25 psi (172 kPa).
Cleaning with Engine Tuner maintenance product
can dissolve carbon build-up.
Spray Engine Tuner through the fitting and allow it
to soak for four to six hours.
Use compressed air to blow through the fitting.
Limit the air pressure to 25 psi (170 kPa). Confirm
movement of air through fitting.
IMPORTANT:
Fitting does restrict air movement.
Replace exhaust pressure fittings that are
blocked and cannot be de-carbonized.

Anti-Corrosion Protection

Sacrificial Anodes
Galvanic corrosion occurs in fresh or salt water.
Salt, brackish, and polluted water can accelerate
corrosion. "Sacrificial" anodes are intended to pro-
tect the underwater metal components of the out-
board from galvanic corrosion.
Outboards are equipped with five sacrificial
anodes.
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1. Propeller shaft anode
2. Bearing housing anode
3. Gearcase housing anode
4. Trim and tilt housing anode
5. Stern bracket anode
Visually inspect anodes and metal components
below water level. Erosion of anodes is normal
and indicates the anodes are functioning properly.
IMPORTANT:
not be properly grounded. Anodes and the mount-
ing screws must be clean and tight for effective
corrosion protection.
For best anode performance:
•
Replace all anodes that have eroded or disinte-
grated to two-thirds of their original size
•
Do not paint or apply protective coatings to
anodes or anode fasteners
•
Avoid using metal-based antifouling paint on the
boat or outboard.
Testing Procedure – Continuity
Connect ohmmeter leads between engine ground
and anode surface.
3 The meter should show little or no resistance. If
resistance is high, check the following:
•
Remove the anode and clean the area where
the anode is installed
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•
Clean the mounting screws
•
Install the anode and test again.
Metallic Component Protection
Protect metal components on outboards from cor-
rosion. Use the following products to minimize
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corrosion:
•
Anti-Corrosion Spray
•
"6 in 1" Multi-Purpose Lubricant
Routine Service
Maintenance
4
5
Anodes that are not eroding may
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