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ELECTRICAL
10.16
FLYWHEEL IDENTIFICATION
Production Date
Part Number
Kokusan EFI Flywheel
Timing Marks
A
Flywheel Identification Stamp Location
The flywheel can be identified by the stamp mark in location A. Refer to “I.D.” location in chart below. Do not
use the cast mark to determine flywheel application.
Engine
Application
Cast Stamp Comment
Kokusan Flywheel 4010912 NA 500 W
EFI -- DC / CDI IGNITION
The Sportsman EFI system has incorporated into it’s
design a DC/ CDI ignition system.
Some of the advantages of DC ignition are:
G Stronger, more consistent spark at
low rpm for better performance
G Easier starts
G Simpler component design for ease
trouble shooting and maintenance
Operation Overview:
The DC/CDI system relies on battery power for ignition.
Instead of generating DC voltage via magnetic
induction, a 12 volt DC current is supplied directly to the
ECU from the battery. 12 volt DC current charges an
internal capacitor to build up the initial ignition charge.
An A/C signal from the Crank Shaft Position Sensor
is processed by the ECU, which determines ignition
timing by calculating from a point pre--determined in
the crankshaft rotation. This signal releases the
electrical charge which saturates the coil for ignition.
DC/CDI systems have the ability to ignite with as little
as 6 volts of power.
NOTE:
DC/CDI systems and compo-
nents are not interchangeable
with any other system.
Timing curve
shown is not indicative of EFI ignition operation.