Checking The Spark Arrester; Fuel System Maintenance; Servicing The Electronic Fuel-Injection System; Replacing The Low-Pressure Fuel Filter - Toro Z Master Professional 5000 Series Operator's Manual

Checking the Spark
Arrester
For Machines with a Spark
Arrester
Service Interval: Every 50 hours
WARNING
Hot exhaust-system components may ignite
fuel vapors even after you shut off the engine.
Hot particles exhausted during engine
operation may ignite flammable materials,
resulting in personal injury or property
damage.
Do not refuel or run the engine unless the
spark arrester is installed.
1. Park the machine on a level surface, disengage
the PTO, and engage 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 muffler to cool.
4. If you see any breaks in the screen or welds,
replace the arrester.
5. If the screen is plugged, remove the arrester,
shake loose particles out of the arrester, and
clean the screen with a wire brush (soak the
screen in solvent if necessary).
6. Install the arrester on the exhaust outlet.
Fuel System
Maintenance
WARNING
Fuel-system components are under high
pressure. The use of improper components
can result in system failure, fuel leakage, and
possible explosion.
Use only approved fuel lines and fuel filters.
Servicing the Electronic
Fuel-Injection System
Machines with EFI Engines Only
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
LED status light illuminates. The MIL is the red light
located on the right side of the hour meter.
Once the light illuminates, make initial troubleshooting
checks; refer to the LED status light section under
Troubleshooting (page
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. Park the machine on a level surface, disengage
the blade-control switch, and engage 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
(Figure 73).
55
87).