1992 Johnson Evinrude "EN" 9.9 thru 30 Service Repair Manual, P/N 508142, Page 290Get this manual
Quality of the image is intentionally reduced!
3 Capacity Test Satisfactory capacity tests can be made only when the battery electrolyte equals or exceeds 1.225 specific gravity at 80 (2]0 C)4 Terminal Voltage Test
Use extreme caution during