1968 Johnson Outboard Service Repair Manual 1-1/2 (1.5) HP P/N JM-6801, Page 9Get this manual
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SPECIFICATIONS
Merc-O-Tronic Operating Amperage 1.6 Primary Resistance MinI .55 .45 Secondary Continuity MinI 30 45
Maximum Secondary 4000
Graham Tester odl 51 Maximum