1971 Evinrude Fisherman 6HP outboards Service Manual, Page 31Get this manual
A wide variety of ignition analyzers is available from various manufacturersIn addition, some automotive testers having the proper specifications can be usedThe use of the Graham, Merc-OTronicor Stevens ignition analyzers is particularly recommended, since these units have provisions for checking all functions of the ignition systemSee Figure 4-22Detailed instructions for the use of any tester are provided with the unit; therefore, only general information is given hereSee Coil Specifications, Section 2All components of the ignition system should be checked, even though replacing part seems to have corrected the troubleFor example, replacing points may have increased spark, but further improvement might be realized if condenser is found to be weak and is replacedCOIL TESTING The coil is tested under conditions of actual operation, as the ignition analyzer provides an interrupted primary current and measures the induced secondary voltageIf the coil is in good condition and is suitable for use, the induced secondary voltage, as indicated on the meter, will fall within the green ("good") area, with primary current adjusted as specifiedThe coil must be removed from the armature plate for this testConnect the test leads from the ignition analyzer to the coil, making sure that the black lead is connected to the ground lead of the coil, the red lead to the coil breaker point lead, and the high tension lead to the coil secondaryWith the coil index adjusted as specified, note the meter readingSee Figure 4-9Figure 4-10Coil Leakage Test Check for leakage from the coil (caused by mOisture, cracks in the coil housing, or carbon paths) by running the test probe over the outside of the coilReplace any coil which shows any leakageSee Figure 4-10 286 4