Kohler SV810-840 Service Manual page 65

C. Digital Spark Advance Module (DSAM)
equipped engines utilize an electronic capacitive
discharge ignition system with electronic spark
the following components:
• Two electronic capacitive discharge ignition
modules which mount on the engine crankcase
spark advance module.
spark advance module to stop the engine.
• Two spark plugs.
Operation: The ignition module for this system
module, except the trigger circuit for the
conditioning circuit. The conditioning circuit shapes
additional circuits. This pulse starts the charge pump,
which charges a capacitor in a linear fashion that is
the pulse resets the delay circuit for the length of the
Electrical System and Components
charge on the charge pump capacitor, the capacitor
changes state, activating the pulse generator.
high voltage pulse generated here is delivered to
the spark plug, causing arcing of the spark gap
associated circuits are reset, their capacitors
™,
discharged. The longer it takes the delay circuit to
surpass the charge pump capacitor voltage, the later
the trigger pulse will occur, retarding the timing
accordingly.
Section 7
7
7.9