2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 48Get this manual
MAINTENANCE ANTI-CORROSION PROTECTION For best anode performance: Replace all anodes that have eroded or disintegrated 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
Bonding Wires
Check bonding wires for breaks, corrosion or other damageClean wire terminals with solventReplace if necessary
IMPORTANT: The anode securing screw should
be covered with silicone sealant
Anode Silicone sealant
Testing ProcedureContinuity