1972 Evinrude StarFlire 125 HP Outboards Service Manual, PN 4822, Page 87Get this manual
FLOAT MUST BE FREE
HYDRO,METER
EYE ON LEVEL WITH LIQUID SURFACE
After correcting to 80 F, interpret readings as follows: 1All cell readings uniform and above 1.225 specific gravityBattery is serviceableMay require charging2All cell readings uniform and below 1.225 specific gravityRecharge to full charge and retestSee note3Variation of more than 30 points (.030) specific gravity any two cellsBattery condition is questionableRecharge and retest before making replacement
MAKE CORRECTION FOR TEMPERATURE