Chrysler 100, 115 and 140 HP Outboard Motors Service Manual, OB 3439, Page 86Get this manual
9Test meter should read 500-570 ohms 10Remove test leads from coil and turn selector knob to "OFF" SELECTOR KNOB
Figure 28Testing CoilTest #1Primary Resistance
1Turn selector knob toDISTRIBUTOR RESISTANCE" positionWith test leads apart, turn meter set knob until meter pointer lines up with set mark on right side of meter2Connect small red test lead to either primary terminalConnect small black test lead to remaining primary terminalFigure 28 3Meter resistance reading should be .20.24 ohms4If readings are high or low, replace the coilTurn selector knob to "OFF"Remove test leads and test secondary continuity5Turn selector knob to "COIL CONTINUITYpositionFigure 296Clip the small red test lead and the small black test lead togetherTurn meter set knob until meter pointer lines up with set scale on right-hand side of meterThis sets the meter7Connect small red test to the brass in the coil tower8Connect small black test lead to either primary terminal