1977 Evinrude 4HP Outboards Service Manual, PN 5303, Page 37Get this manual
No timing adjustments are necessaryCorrect wire positioning in the three and four wire connectors is all that is required to maintain proper ignition timing CONNECTOR PLUGS
Two water-proof connectors, male and female plugin type, are utilized in the ignition systemA four wire connector connects the charge coil and sensor coil leads to the power packThe three wire connector connects the power pack leads to the ignition coilsSee Figure 4-23Each connector is secured by retainerThe retainer must be removed to unplug the connector
1Black tester lead 2Red tester lead
3Tester high tension lead 4Adapter
Figure 4- 21Coil Power Test
1Four wire connector 2Three wire connector 3Connector retainer 1Black tester lead 2Red tester lead 3Probe
Figure 4- 23Connector Plug Location