1998 Johnson Evinrude "EC" 2 thru 8 Service Manual, P/N 520202, Page 124Get this manual
CD IGNITION OUTPUT TESTS2, 2.3, 3.3 All cranking output tests must be performed with spark plug installed and torqued in the cylinder headIf necessary to remove the spark plug, be sure to keep the spark tester away from spark plug holeINotel 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
1Remove the spark plug lead from spark plug To prevent damage to the spring terminal on the spark plug lead, twist and pull the cover
2Adjust the spark gap on the spark tester to 3B in(0,9 mm)Connect the tester lead to the spark plug leadSecure tester clip to clean engine ground39327