1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 126Get this manual
IGNITION OUTPUT TESTS 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
rn 1Twist and remove the leads from both spark plugsrn Adjust leadsgapthe spark sparkleadsSecure tester clip to the on the tester to inmm)Connect tester to plug
clean engine ground
INote To
prevent possible arcing of high voltage, route tester leads at least in(51 mm) from any metal surface
&To avoid possible shock hazard, do not handle ignition coils