1968 Evinrude Big Twin, Lark 40 HP Outboards Service Repair Manual P/N 4483, Page 85Get this manual

1968 Evinrude Big Twin, Lark 40 HP Outboards Service Repair Manual P/N 4483, Page 85

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CHARGING CIRCUIT CHECKS Reading Approximately 12.5 volts Slightly below 12.5 volts
Normal Operation
After 15 minutes operation voltage should hold steady at 14.5 to 15.2 volts and ammete r