Kubota G2160, Workshop Manual, Page: 234 / 395

8-M5
G2160, WSM ELECTRICAL SYSTEM
2. KRA (Kubota Reverse Awareness) SYSTEM (If Equipped)
Tractor is configured with a KRA (Kubota Reverse Awareness) system to prevent the operator from attempting to
mow in reverse. However, the operator may choose to override the system by pushing an override switch on panel
board. A flashing warning lamp reminds the operator that the mow in reverse has been selected.
Operator awareness is enhanced by the KRA system, which prevents mowing in reverse. For those operators who
require full mowing potential, the system may be overriden when the operator actively pushes an override switch.
KRA system mainly consists of parts showed in figure.
1. KRA system switch (override switch)
- KRA system switch (override switch) is a momentary switch to start KRA system.
- To cancel KRA system, two conditions are required. One condition is to engage PTO lever. Other condition is
to keep speed control pedal to “NEUTRAL” or “FORWARD” position. And at the main switch’s starting position,
operator can check flashing lamp function.
2. KRA system Relay Unit
- KRA system relay unit consists of three parts of circuits, that is, inter-lock circuit (relay circuit), reverse switch
short circuit and lamp flashing circuit. (See page 8-M6.)
3. Reverse Switch
- Reverse switch is a switch to detect the speed control pedal position.
4. Key Stop Timer and Stop Solenoid
- While engine is runnning, current from main switch flows to the third contact point of the key stop timer. Current
charges the timer circuit in the key stop timer. When the main switch is turned to “OFF” position, the stop
solenoid is supplied current from the key stop timer. After that, the stop solenoid cuts off fuel injection from
injection pump of the engine.
5. Fuse (KRA system)
- Fuse to be used in KRA system has two functions. The first function is to protect the electrical circuit of KRA
system same as fuses to be used in the common electrical circuits. The second function is to cancel the detection
of “REVERSE” signal from reverse switch (speed control pedal).
W1018712
(1) KRA system Switch (Override Switch)
(2) Main Switch
(3) KRA system Relay Unit (4) Reverse Switch
(5) Key Stop Timer
(6) Stop Solenoid (7) PTO Switch
(8) Fuse (KRA system) (9) Engine Running Circuit
(10) Engine Stopping Circuit
KiSC issued 11, 2006 A