Suzuki 2002-2005 DF4/DF5/DF6 4-Stroke Outboards Service Manual, Page 40Get this manual
IGNITION AND ELECTRICAL
IGNITION SYSTEM
OUTLINE
A digital CDI (condenser discharge ignition) system is employed on the DF4DF5The CDIcoil unit incorporates an ignition coil and pulser coreIf the magnetic reluctor bar on the flywheel passes through the pulser core, the exciter coil in the unit generates the electrical energy as shown in the chart belowThe condenser stores the positive side electrical energy, while the CPU utilizes the negative side electrical energy as basic signals in order to calcurate the engine speed and to control the ignition timingThe electrical energy stored in the condenser is released to the ignition coil primary windings, then high surge voltage occurs in the ignition coil secondary windings and spark is generatedThe CDIcoil unit incorporates an over-revolution limiter which limits maximum engine speed to approximately 6000 rminIf the over-revolution limiter activates, the motor will exhibit rough running condition