Kohler Comand Pro CH1000 Service Manual page 59

SWITCH, KEY B-BATTERY
A-ACCESSORY
STARTER
GROUND
M-MAGNETO
YELLOW WIRES
R-RECTIFIER
BLUE WIRE
BLACK WIRE
WHITE WIRES
RED WIRE
RED WIRES
CONNECTOR, 5-CIRCUIT
POS.
BATTERY
NEG.
RED
FUSE
BLUE
STARTER
SOLENOID
STUD
STARTER
SOLENOID
TANG
STARTER ASSEMBLY
Figure 7-6. Digital Spark Advance Ignition (DSAI) System.
Troubleshooting DSAI Ignition Systems
The DSAI ignition system is designed to be trouble
free for the life of the engine. Other than periodically
checking/replacing the spark plugs, no maintenance,
timing, or module adjustments are necessary or
possible. Mechanical systems do occasionally
fail or break down however, so the following
troubleshooting information is provided to help you
get to the root of a problem.
Reported ignition problems are most oft en due
to poor connections. Before beginning the test
procedure, check all external wiring. Be certain all
ignition-related wires are connected, including the
spark plug leads. Be certain all terminal connections
fi t snugly. Make sure the ignition switch is in the RUN
position.
Test Procedure for DSAI Ignition Systems
The following procedures are provided for
troubleshooting ignition problems on DSAI equipped
engines. They will allow you to isolate and pinpoint
the failed component(s).
OIL SENTRY
LIGHT
YELLOW
CONNECTOR, 1-CIRCUIT
(ACCESSORY)
RED
WHITE
YELLOW (ACCESSORY) (+)
GREEN
(OIL SENTRY PULSE SIGNAL)
(NOT VALID WITH INDICATOR
LIGHT OR NO PRESSURE SWITCH)
REGULATOR
RECTIFIER
WHITE
(ALTERNATIVE IGNITION
PULSE SIGNAL) (-)
VIOLET (B+ LEAD)
Special Tools Required:
Specifi cations Required:
*NOTE: Ignition tester (Kohler Part No.
Electrical System and Components
LIGHT ASSEMBLY, INDICATOR
(OPTIONAL)
BLACK
RED
RED
CARB MOUNTING
CARB.
STUD
SOLENOID
GROUND
CARB.
FLYWHEEL
STATOR
ASS'Y
BLACK
RED
REGULATOR
CONNECTOR
BLOCK
WHITE
(AC CHARGING
LEADS)
• Hand Tachometer
• Ignition Tester* (Kohler Part No. 25 455 01-S)
• Automotive Timing Light
• Multi-meter (Digital)
• Spark plug gap 0.76 mm (0.030 in.)
25 455 01-S), must be used to test ignition
on these engines. Use of any other tester can
result in inaccurate fi ndings. The batt ery on
the unit must be fully charged and properly
connected before making any of these tests
(a batt ery that is hooked up or charged
backward will crank the engine, but it won't
have spark). Be certain the drive is in neutral
and all external loads are disconnected.
Section 7
OIL PRESSURE SWITCH
(OPTIONAL)
GREEN
(NOT VALID WITH INDICATOR
LIGHT OR NO PRESSURE SWITCH)
SPARK PLUG
#1 CYLINDER
IGNITION
(MODULES)
MODULE
MTG SCREW
GROUND
(SPARK PLUG LEAD)
SPARK PLUG
#2 CYLINDER
WHITE
BLACK
(SHUT OFF)
(GROUD)
RED
(B+)
MODULE LEAD
DESIGNATION
7.7
7