Electronic Governor; Digital Linear Actuator (Dla); Linkage; Governor System - Kohler Command Pro ECV850 Service Manual

GOVERNOR
These engines are equipped with an electronic governor or a mechanical governor.

ELECTRONIC GOVERNOR

Components
K
H
B
I
J
Governor Control
A
Unit (GCU)
E Connector
I Throttle Linkage
Electronic governor regulates engine speed at varying
loads. Typical electronic governor includes:
● Digital linear actuator (DLA).
● Throttle linkage.
● Linkage spring.
● Linkage retaining clip.
● Governor control unit (GCU).

Digital Linear Actuator (DLA)

Energizing bi-directional digital linear actuator coils in
proper sequence, causes threaded shaft to move out
of, or back into rotor, in precise linear increments. When
power is removed, actuator shaft remains in position.
DLA must initialize (fully extend) to move throttle plate to
closed position, and partially open for starting. Correct
adjustment of DLA is critical to achieve full range of
throttle plate movement. See Adjustment.
Governor control unit (GCU) senses engine speed
by pulse voltage inputs from EFI ECU module. GCU
regulates engine speed by variable input voltage from a
customer-supplied source.
NOTE: Actual speeds depend on application. Refer to
equipment manufacturer's recommendations.
19 690 01 Rev. --
C
F
G
Digital Linear
B
Actuator (DLA)
Throttle Body
F
Assembly
Plastic Linkage
J
Retaining Clip
KohlerEngines.com
A
DLA Bracket
C
Mounting Nuts
Throttle Body Lever
G
Adapter
DLA to DLA Bracket
K
Mounting Screws
Potentiometer Specifi cations
Wiper Voltage
0-1
1-9
9-16

Linkage

NOTE: Throttle linkage spring must be in place and
installed correctly to ensure proper throttle
operation and performance.
Throttle linkage spring will fully open throttle plate if
linkage becomes detached from DLA. This will create an
overspeed condition causing engine to shut down. DLA
shaft will have to be manually screwed back into body,
and then retracted before reassembling linkage.

Governor System

D
E
D Wiring Harness
H Linkage Spring
Engine Speed (RPM)
Low Speed Endpoint
Variable Speed Endpoint
High Speed Endpoint
49