1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 122Get this manual
IGNITION OUTPUT TESTSCD II All cranking output tests must be performed with spark plugs installed and torqued in the cylinder headIf necessary to remove the spark plugs, be sure to keep the spark tester away from open spark plug holesINotel The following series of steps will systematically isolate a
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
1Twist and remove the leads from both spark plugs
2Adjust the gap on the spark tester to '2 in(12 mmlConnect tester leads to the spark plug leadsSecure tester clip to clean engine ground
INote To