Kohler 14RES Manual page 30

Problem Possible Cause
Starts hard Low battery voltage Check battery voltage during
Air cleaner clogged
Fuel mixture
adjustment
incorrect
DSAI leads
incorrectly
connected or
disconnected
Spark plug(s)
Spark plug wire(s)
Ignition
components (spark
control or ignition
module)
Insufficient fuel
pressure
Worn piston rings,
valves
Starts but Fault shutdown
shuts
down
W/D = Wiring Diagram(s) (Section 7)
I/M = Generator Set Installation Manual
* RDC controller settings can be checked and adjusted using the controller user interface or using a personal computer running SiteTech
software. DC controller settings can only be changed using SiteTech.
30 Section 3 Troubleshooting
Test
cranking.
Check battery charger
connections, power supply, and
operation.
Check for a dirty air cleaner
element.
Use oxygen sensor to check fuel
mixture.
Check DSAI connection.
Check spark plug condition and
gap.
Check spark plug wires and
connections.
Test ignition components
according to instructions in the
engine service manual.
Check fuel pressure to the
generator set. Verify adequate
fuel pressure and pipe size for the
generator set plus all other gas
appliances.
Check compression. See the
engine service manual.
Check for a fault shutdown code
on the controller display. Identify
the cause of the fault.
S/S = Generator Set Specification Sheet
Engine S/M = Engine Service Manual
Corrective Action
Charge battery. Replace battery if
necessary.
Tighten loose connections.
Replace element.
Adjust fuel mixture.
Connect for natural gas.
Disconnect for LP.
Replace or regap spark plug(s).
Tighten connections. Replace
spark plug wires if damaged.
Replace ignition components if
necessary.
Contact fuel supplier to replace
fuel supply lines with larger pipe
and replace gas meter if fuel
pressure is insufficient.
See engine service manual.
Correct the fault and then press
the controller's OFF button to
reset the controller.
O/M = Generator Set Operation Manual
Reference
O/M
O/M
Section 5.11
Section 5.11.2
O/M
Engine S/M
Engine S/M
Section 5.11.3
Engine S/M
Section 5.10
TP-6735 7/17