1994 Johnson/Evinrude "ER" 9.9 thru 30 outboards Service Manual, Page 132Get this manual
IGNITION OUTPUT TESTSCD II i plugs installed and torqued in the cylinder headIf neces"" 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
[!] 1Twist and remove the leads from both spark plugsr:;l 2Adjust the gap on the spark tester to '2 in(12 mm)Connect tester leads to the spark plug leadsSecure tester clip to clean engine ground
To 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