2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 125Get this manual
IGNITION IGNITION SYSTEM TESTS tabConnect the high tension lead of the tester to the coil spark plug leadWith the analyzer's black and red leads still connected from the Power Test, remove the analyzer's high tension lead from the coilTurn on the analyzer and probe the entire surfaces of the coil, spark plug lead, and spark plug cover
1Primary terminal 2Ground tab 3Coil spark plug lead
A steady spar,k,in- the tester at or before maximum specified amperage, indicates good coilRefer to Ignition Coil Specifications on p122