1978 Evinrude Outboards 9.9/15HP Service Manual, Page 45Get this manual
IGNITION COIL TESTS OHMMETER TEST Resistance tests may be performed while the ignition coil is still mounted to the power headaRemove the high tension lead from the spark plugbSeparate the three wire connector between the power pack and ignition coils cInsert jumper wire into the "B" terminal on the ignition coil end of the three wire connectorSee Figure 4-29d Calibrate an ohmmeter to low ohm scale, then connect the black meter lead (-) to clean engine ground, and the red meter lead (+) to the "B" terminal jumper wireSee Figure 4-29eResistance of the primary winding should be 0.1 0.05 ohms(+)
1High ohm scale 2Red meter lead Black meter lead
4Terminal "C" 5Terminal "B" Terminal "A"
Figure 4-30Secondary Winding Resistance
POWER TEST
A wide variety of ignition testers are available from various manufacturersIn addition, some automotive testers having the proper speCifications can be usedThe use of the Graham, MercO-Tronic, Stevens ignition tester is recommendedDetailed instructions for the use of any tester are provided with the unit; therefore, only ,general information is given hereSee Coil Specifications, Section 2IGNITION COIL TESTING (IGNITION COIL MUST BE REMOVED FROM POWER HEAD FOR POWER AND LEAKAGE TESTING)