Mercury Workshop Service and Repair Manuals

Alternator: Electrical Specifications

Item......................................................................................................................................................................................................................Specification

Generator

Generator amps..................................................................................................................................................78/143 amps (max) @ 620-2,500 engine rpm
Generator amps (optional).................................................................................................................................102/170 amp (max) @ 670-2,300 engine rpm
Voltage.........................................................................................................................................................................................................................12 volts

Generator

Load at 2,000 rpm....................................................................................................................................................................................................75 amps
No Load at 2,000 rpm...............................................................................................................................................................between 13.2 and 15.5 volts