1992 Johnson/Evinrude EN 2.3 thru 8 outboards Service Manual, Page 111Get this manual
IGNITION OUTPUT TESTSUFI
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 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
f1l 1Twist and remove the spark plug leads from both spark plugs
t=I tester leads to the spark plug leadsSecure tester clip to a
clean engine groundTo prevent possible arcing of high voltage, route tester leads at least in(51 mm) from any metal surface
2Adjustthe gap on the spark tester to
in(12 mm)Connect