Anti-Corrosion Protection - Evinrude E-Tec 40 HP Service Manual

ROUTINE SERVICE

ANTI-CORROSION PROTECTION

ANTI-CORROSION
PROTECTION
Sacrificial Anodes
Galvanic corrosion occurs in fre sh or salt wa ter.
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 equ ipped with three sacrificial
anodes.
1
1. Stern bracket anode
2. Propeller shaft bearing housing anode
(inside of gearcase housing)
3. Gearcase housing anode
Visually inspect ano des and metal co mponents
below water level. Erosion of anode s is normal
and indicates the anodes are functioning properly.
Anodes that are no t eroding ma y
IMPORTANT:
not be properly grounded. Anodes and the mount-
ing screws must be clean an d tig ht for effective
corrosion protection.
For best anode performance:
Replace all anodes that have eroded or disinte-
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grated to two-thirds of their original size.
Do not p aint or app ly pro tective co atings to
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anodes or anode fasteners.
Avoid using metal-based antifouling paint on the
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boat or outboard.
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Testing Procedure – Continuity
Connect ohmmeter leads between engine ground
and anode surface.
1
1. Meter lead to anode
The mete r sho uld show little or no re sistance. If
resistance is high, check the following:
Remove the an ode and clean the area where
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3
the anode is installed
Clean the mounting screws
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Install the anode and test again.
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Metallic Component Protection
2
Protect metal components on outboards from cor-
rosion. Use the following product s to minimize
corrosion:
DR5082
Anti-Corrosion Spray provides a heavy , waxy
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coating to protect components
"6 in 1" Multi-Purpose Lubricant provides a thin
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film of anti-corrosion protection.
Exterior Finishes
Maintain the outboard's ext erior finish to preve nt
corrosion and reduce oxidation:
Use a utomotive wa x to prot ect the outboa rd's
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exterior finish from oxidation
Clean regularly using clean
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detergent soap
Touch-up damage to painted surfaces promptly.
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000677
wa ter and mild