1977 Evinrude 4HP Outboards Service Manual, PN 5303, Page 31Get this manual
1Jumper wires 2Low ohm scale 3Terminal "A"
4Terminal "B" 5Terminal "C" 6Terminal "D"
1Jumper wires 2High ohm scale 3Terminal "A"
4Terminal "B" 5Terminal "C" 6Terminal "D"
Figure 4-9Sensor Coil Resistance Figure 4-11Charge Coil Resistance
cTo test the resistance, connect an ohmmeter (calibrated to high ohm scale) between the two jumper wiresThe charge coil resistance is good if the needle indicates 575 75 ohmsSee Figure 4-11dTo test for shorts to ground, calibrate the ohmmeter to high ohm scaleConnect the black meter lead (-) to the armature plate (ground)Attach the red meter lead (+) to the "A" terminal jumper wire in the connectorSee Figure 4-12Any needle movement indicates the charge coil or leads are shorted to groundA shorted charge coil must be replaced, or the grounded lead repaired to remove the shorted conditioneDo not remove the jumper wires from the connectorand continue the troubleshooting procedure