1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Manual, Page 80Get this manual
Ignition Module
rn distributes the voltage has several basic functions.coilThe The ignition module It stores and received from the charge
ignition module uses an electronic switch, activated by the timing sensor, to energize ignition coil primary windingThe ignition module has an RPM limiting circuit which helps protect against powerhead damage due to overrevvingOverrevving can result from: Installing the motor too high Carrying less weight than the motor is propped for Using propeller that is too small, has very worn blades, or ventilates excessivelyThe ignition module incorporates the S.L.oWwarning systemThis system gradually limits engine speed to approximately 2000 RPM when either the: Engine temperature switch closes (Remote Control Models) Crankcase oil pressure drops to dangerously low level Once the S.L.OWwarning system has activated, the engine must cool to allow the temperature switch to open or crankcase oil pressure must be restoredThe engine must be operated below 1500 RPM before normal operation can be resumed Stop Circuit The stop buttonkey switchand emergency stop are connected to the ignition module through the switch engine wiring harnessWhen activated, these switches direct the ignition module output to ground, stopping the ignition systemThe steering handle contains combination stop switch emergency stop device When the clip and lanyard assembly is removed, the emergency stop device is in the STOP position When the clip and lanyard assembly is installed, the emergency stop device is in the RUN position To stop the engine when the clip and lanyard assembly is in place, press the stop button inward until the engine stopsIgnition Coil []] The ignition coil consists oftwo windings of wire around laminated steel coreThe coil has one primary and two secondary terminal connections and ground tabThrough mutual induction, the ignition coil transforms ignition module output to as much as 40,000 volts to fire the spark plugrn []]