1979 Evinrude 4 HP Outboards Service Manual, PN 5424, Page 37Get this manual
1Jumper wires 2Black tester lead 3Blue tester lead 4Position No2
Figure 4-19Charge Coil Output Test
5Neon light 6Terminal "A" 7Terminal "0" 8Hold load buttonB"
TRIGGER INPUT TEST Check neon battery voltage as follows :
aModel M-90Connect voltmeter as shown in Figure 4-20Set switch to position 4, and press load button "B Battery voltage should be minimum of 2-12 volts
bModel M-80 or S-80Connect the 1-1volt battery adapter to the neon tester black lead with (-) negative end toward the neon tester, and connect the voltmeter as shown in Figure 421Set switch to position 3, and press load button "B Battery voltage should be mini mum of 2-12 volts!, +