Fuel System Maintenance; Servicing The Electronic Fuel-Injection System; Replacing The Low-Pressure Fuel Filter; Servicing The High-Pressure Fuel Filter - Toro 74946 Operator's Manual

Fuel System
Maintenance
WARNING
Fuel-system components are under high pressure.
The use of improper components can result in
system failure, gasoline leakage, and possible
explosion.
Use only approved fuel lines and fuel filters.
Servicing the Electronic
Fuel-Injection System
This machine contains an electronic fuel-injection system. It
controls the fuel flow under different operating conditions.
The electronic control unit (ECU) continuously monitors the
operation of the EFI system.
If a problem or fault within the system is detected, the
malfunction indicator light (MIL) illuminates. The MIL is the
red light located in the right console panel.
Once the MIL illuminates, make initial troubleshooting
checks. Refer to the MIL section under
(page 70).
If these checks do not correct the problem, further diagnosis
and servicing by an Authorized Service Dealer is necessary.
Replacing the Low-Pressure
Fuel Filter
Service Interval: Every 200 hours/Yearly (whichever comes
first)
The fuel filter is located near the engine on the front or rear
side of the engine.
1. Disengage the blade-control switch (PTO), move the
motion-control levers to the N
and set the parking brake.
2. Shut off the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Wait for the machine to cool down.
4. Close the fuel-shutoff valve under the seat
Troubleshooting
- position,
EUTRAL LOCK
(Figure 56).
44
3
G008963
Figure 56
1. Fuel filter
2. Hose clamp
5. Squeeze the ends of the hose clamps together and slide
them away from the filter
6. Remove the filter from the fuel lines.
7. Install a new filter and move the hose clamps close to
the filter (Figure 56).
8. Open the fuel-shutoff valve.
Important: Install the fuel line hoses and secure with
plastic ties the same as they were originally installed at
the factory to keep the fuel line away from components
that can cause fuel line damage.
Servicing the High-Pressure
Fuel Filter
Do not attempt to service the high-pressure fuel filter. The
high-pressure filter is integrated within the fuel-pump module.
The fuel filter and other components inside the fuel-pump
module are not serviceable.
Important: Do not attempt to open the fuel-pump
module.
Ensure that an Authorized Service Dealer replaces the
fuel-pump module with the high-pressure fuel filter.

Servicing the Fuel Tank

Do not attempt to drain the fuel tank. Ensure that an
Authorized Service Dealer drains the fuel tank.
1 2
3. Fuel line
(Figure 56).