1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 133Get this manual
IGNITION OUTPUT TESTSCD II ill plugs installed and torqued in the cylinder headIf neces1 All cranking output tests must be performed with spark
sary to remove the spark plugs, be sure to keep the spark tester away from open spark plug holesThe following series of steps will systematically isolate problem area in the ignition systemTo reduce your troubleshooting time and to avoid incomplete results, perform these steps in the order written
STEPTOTAL OUTPUT TEST
IT! 1Twist and remove the leads from both spark plugsr2J 2Adjust the gap on the spark tester to 1 in(12 mm)Connect tester leads to the spark plug leadsSecure tester clip to clean engine groundTo prevent possible arcing of high voltage, route tester leads at least in(51 mm) from any metal surface
i or spark tester during cranking tests