Kohler KT735 [42/96] Fuel system
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Kohler KT735 [42/96] Fuel system

Kohler KT735 [42/96] Fuel system
Fuel System
42 32 690 03 Rev. IKohlerEngines.com
eChoke
™
System Standard Checks
NOTE: Procedures and troubleshooting may be easier
to perform with engine cover removed. Refer to
Disassembly/Inspection and Service and
Reassembly procedure.
Use these procedures and guides to troubleshoot this
system and its components. Perform a system reset
prior to troubleshooting to verify problem still exists. Start
with key switch in OFF position, operate through On-Off-
On sequence and restart engine.
There are standard checks that should be made initially
to help isolate possible problems:
1. Check choke assembly to ensure choke is properly
connected. (Link connected to carburetor and
stepper motor.)
2. Make sure link is located and connected properly.
3. Check for battery voltage (nonoperating), must be
greater than 12.2 VDC open circuit.
(Low battery voltage may prevent proper operation
of stepper motor.)
4. Check that constant power line (RED/GREEN stripe)
connection is connected directly to battery B+.
5. Check for continuity through constant power line
(possible fusible link failure).
6. Check for presence of constant (battery voltage) and
switched power at harness. (Blower housing must be
removed.)
7. Check that choke stepper motor is functioning.
(Remove air cleaner cover and element. Operate
key switch through On-Off-On sequence to inspect
for any choke movement.)
8. If blink codes indicate a temperature read failure or
RPM failure (see blink code info), then master
controller/ignition is at fault and needs to be
replaced.
9. If all standard checks are correct, proceed to Blink
Codes.
Blink Codes
NOTE: Use of any other type of lamp, other than LED,
could damage components.
eChoke
™
system is equipped with an MIL connector that
will allow connection of an LED lamp to show normal
eChoke
™
operation or specifi c error codes. This lead
(white/red stripe) with a bullet connector next to stepper
motor to which an LED (connected to lead and +12 volt
power line) can be connected to review operation or
look for error codes. Once a lamp is connected, operator
can attempt to run through a normal start/crank/run/
off sequence and monitor blink codes to determine if
controller operation is correct.
Both normal operation and error code indication is listed
in blink code table that follows. Note that code changes
for each level of operation.
Table shows both normal operation and failure mode
blinks codes. Normal operation blink codes will be
displayed when no failure modes are detected during
operation. These codes will only appear if there is no
captured failure blink code. Failure mode blink codes are
specifi c to integrated sensors associated with master
controller/ignition module.
Operational blink sequence only occurs when routine
associated to it is completed, until then LED will continue
blinking to previously completed routine.
eChoke Diagnostics and Failure Mode Subroutines
● DELAY=LED OFF 2 seconds
● ON=LED ON 0.5 second
● OFF=LED OFF 0.5 second

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