2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 56Get this manual
MAINTENANCE BATTERY AND BATTERY CONNECTIONS IMPORTANT: Anodes that are not eroding may indicate that the anodes are not properly groundedThe anodes and mounting screws must be clean and tight for effective corrosion protectionFor best anode performance: Replace all anodes that have eroded or disintegrated to two-thirds of their original size After installation, apply some Gasket Sealing Compound to the anode mounting bolt head Do not paint or apply protective coatings to anodes or anode fasteners Do not use metal-based anti-fouling paint on the boat or outboard BATTERY AND BATTERY CONNECTIONS
WARNING
Battery electrolyte is acidicHandle with careWear eye protectionIf electrolyte contacts any part of the body, immediately flush with water and seek medical attention
Metallic Component Protection
Protect metal components on outboards from corrosion Use the following products to minimize corrosion Anti-Corrosion Spray provides heavy, waxy coating to protect components "6 in 1" Multi-Purpose Lubricant provides thin film of anti-corrosion protection