Engine Controller (Tier 4 Engines Only) - HUSTLER Diesel Z Operator's Manual

• When practical, remove diesel fuel powered equip-
ment from the truck or trailer and refuel the equip-
ment with its wheels on the ground. If this is not
possible, then refuel such equipment on the truck or
trailer using a portable container and not a fuel dis-
penser nozzle. If a fuel dispenser nozzle must be
used, keep the nozzle in contact with the rim of the
fuel tank or container opening at all times until fuel-
ing is complete. Do not use a nozzle lock-open
device.
• Never use gasoline or diesel fuel for cleaning parts.
• Read and observe safety precautions elsewhere in
this manual.
WARNING
• Diesel fuel is harmful or fatal if swallowed.
• Long-term exposure to vapors can cause serious
injury and illness.
• Avoid prolonged breathing of vapors.
• Keep face away from nozzle and gas tank or fuel
container opening.
• Keep gas away from eyes and skin.
• If fuel is spilled on clothing, change clothing imme-
diately.
The fuel tanks are located in the mower's fenders. These
engines require number 2 diesel fuel only.
Hustler Diesel Z tractors are equipped with a fuel shutoff
®
valve located to the right rear of the seat. Rotate the valve to the
middle position to allow fuel to flow from the right fuel tank to
the fuel pump. The right position prevents fuel flow to the fuel
pump. The left position allows fuel to flow from the left fuel
tank to the fuel pump. Close this valve to prevent fuel flow to
the engine when servicing the fuel system or when transporting
the unit on a trailer or truck. Figure 4-5
Priming the fuel system
If the diesel fuel system runs dry, use the following procedure
when re-starting the engine:
1. Refill the fuel tanks.
2. Make sure the fuel shutoff valve is turned to the full fuel
tank.
3. Take the priming bulb and compress it until it becomes
firm. Figure 4-6
4. Try and start the engine. If it will not start after 15
seconds of cranking, repeat Step 3.
If after trying several times, the engine still will not start,
contact your Hustler ® Dealer.

Engine Controller (Tier 4 Engines Only)

The engine controller is used on all Tier 4 engines. It monitors
and controls the engine's fuel emissions. When a problem is
detected, a code is sent to the Engine Warning Light located on
the control panel.
Refer to the Hustler ® Diesel Z General Service Manual (P/N
603695
Fuel shutoff
position
Fuel shutoff valve
(shown in right fuel
tank position)
Priming bulb
Controller
4-5
Left fuel tank
Figure 4-5
Figure 4-6
Figure 4-7
REV F