1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 102Get this manual
Power Test
lNotel Do
not e,:,ceed thecoil's maximum specified amperage when testing the COIl
L!J Connect tester red lead to the primary terminal of the coil
and the tester black lead to the ground tab Connect the high tension lead of the tester to the coil spark plug lead
f41 The ignition coil is tested with "normal" polarity connections;
A steady spark in the tester at or before maximum specified amperage indicates good coilRefer to Ignition Coil SpecificationsSurface Leakage Test Do not exceed the coil's maximum specified amperage hen testing he COl'1 The ignition coil and spark plug lead should be tested for leakage or insulation failures using the ignition testerLeakage is caused by moisture, cracks or holes in the coil housing or spark plug leadsthe tester's small black and red leads still connected, remove the tester's high tension lead from the coilTurn on the tester and probe entire surface of the coil, spark plug lead, and spark plug coverFlashover will be apparent wherever insulation has broken downReplace any coil or spark plug lead that shows leakage