Owner manual

Chapter 9 - Electrical
284
• The engine harness contains wires for the cir-
cuits listed in the table below:
17. The Fuel Pump for the Caterpillar engine is
mounted under the console support bracket. It
is easily accessible by lifting the passenger’s
seat. See Figure 9.19.
• A single orange wire provides power to the fuel
pump. Ground is through the frame via a short
jumper wire from the pump to the pump mount-
ing bolts.
• The orange wire provides battery voltage,
unfused, from the regulator when the key is in
any position other than STOP. This is the same
circuit that powers the fuel shut-off solenoid.
• When the fuel pump is in operation, it makes an
audible clattering that can be identified with the
key on /engine off.
• A slight vibration or pulsation is noticeable to the
touch on the pump and fuel line when the pump
is in operation.
• If the fuel system is dry, the pump will be espe-
cially loud until it has drawn a prime.
• The Kohler engine uses a mechanical fuel
pump.
Wire in
main
harness
Wire in
engine
harness
Function
Orange /
white
trace
Orange /
white
trace
Starter solenoid trigger
wire
Green
Green Ground
Black
Black Oil sender
Purple Purple
Glow plug relay wind-
ings
Orange Orange
Fuel solenoid
White /
black
trace
White /
black
trace
Over temp sensor
Yellow
Yellow Glow plugs / light
Figure 9.19
Fuel pump
Ground wire
Orange hot lead
Red wire
to fuel pump