1991 Johnson/Evinrude EI Outboards 2.3 thru 8 Service Manual, Page 245Get this manual
Battery Specifications All batteries should be of heavy duty, marine constructionThe battery must be vented, refillable typeFor best performance, we recommend 12-volt battery with minimum rating of 350 cold cranking amps (CCA) (70 amp hrs at (-18 C) and 100 minutes reserve capacity at 80 (2]0 C)Battery Testing
i handled with careIf electrolyte contacts any part of the
Battery electrolyte is an acidic solution and should be
body, immediately flush the exposed area with liberal amounts of water and seek medical aid as soon as possible1Visual Inspection The first step in determining the condition of battery should be visual inspectionLook for conditions such as damage to the case, loose terminals, 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 electrolyte