1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Repair Manual, P/N 507870, Page 119Get this manual
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-' STEPSENSOR COIL TEST
1 Disconnect the sensor leads from the ignition module2 Set peak-reading voltmeter to "POS" and "5," "SEN" and "5" on Stevens CD-77 meterf4l 3 Alternately connect