1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 81Get this manual
_ GENERAL
Anode 1Inspect: Anode Trim tab Scales -7 CleanOilgrease -7 CleanExcessive wear-7 Replace
Do not oil, grease or paint the anode, or it will not operate properlyBattery
WARNING
Battery electrolyte is dangerous; it contains sulfuric acid which is poisonous and highly causticAlways follow these preventive measures: Avoid bodily contact with electrolyte as it can cause severe burns or permanent eye injury Wear protective eye gear when handling or working near batteriesAntidote (EXTERNAL): SKINWash with water EYESFlush with water for 15 minutes and get immediate medical attentionAntidote (INTERNAL): Drink large quantities of water or milk followed with milk of-magnesia, beaten egg or vegetable oilGet immediate medical attentionBatteries generate explosive, hydrogen gasAlways follow these preventive measures: Charge batteries in well-ventilated area Keep batteries away from fire, sparks or open flames (e.g welding equipment, lighted cigarettes, etc DO NOT SMOKE when charging or handling batteriesKEEP BATTERIES AND ELECTROLYTE OUT OF REACH OF CHILDREN