1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 272Get this manual

1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 272

Battery Devices Battery IsolatorsIf the engine is equipped with fully regulated charging system and it's supporting two or
the condition of battery should be visual inspectionLook for conditions such as damage to the case, loose terminal, evidence
of electrolyte seepage, etcThese signs may indicate improper care, installation, or application of the batteryLook for excessive
corrosion on the battery terminals and cablesCheck the battery cables for worn or frayed insulationReplace cables, if necessaryCheck
the electrolyte level in each cellIf electrolyte level is below the plates, it is possible the battery is permanently damagedAlso
look for dirt, oil, or other contaminants floating in the electrolyte2Hydrometer Disconnect the positive battery cable whenever
charging the batteryThis test can only be used when there is sufficient electrolyte above the battery plates to fill the
hydrometer tube Do not, however, take readings immediately after refilling the cells with waterThe battery must be charged,