Using Cruise Control; Cutting Grass With The Machine; Diesel Particulate Filter Regeneration - Toro Groundsmaster 4000 Operator's Manual

Using Cruise Control

The cruise-control switch locks in the pedal position to
maintain the desired ground speed. Pressing the rear
of the switch turns the cruise control off, the middle
position of the switch enables the cruise-control
function, and the front of the switch sets the desired
ground speed.
Note:
Pressing either the brake pedal or moving the
traction pedal into the R
also disengages the pedal position.
Cutting Grass with the
Machine
Note:
Cutting grass at a rate that loads the engine
promotes DPF regeneration.
1. Move the machine to the job site.
2. Whenever possible, set the engine-speed switch
to high idle.
3. Engage the PTO switch.
4. Gradually move the traction pedal forward and
slowly drive the machine over the mowing area.
5. Once the front of the cutting units are over the
mowing area, lower the cutting units.
6. Cut grass so that the blades can cut and
discharge clippings at a high rate while
producing a good quality of cut.
Note:
If the cutting rate is too high, the quality
of cut may deteriorate. Reduce the ground
speed of the machine or reduce the width of cut
to regain high idle engine speed.
7. When the cutting units are over the far edge of
the mowing area, lift the cutting units.
8. Perform a tear-shaped turn to quickly line up for
your next pass.
Diesel Particulate Filter
Regeneration
The diesel particulate filter (DPF) is part of the exhaust
system. The diesel-oxidation catalyst of the DPF
reduces harmful gasses and the soot filter removes
soot from the engine exhaust.
The DPF regeneration process uses heat from the
engine exhaust to incinerate the soot accumulated on
the soot filter, converting the soot to ash, and clears
the channels of the soot filter so that filtered engine
exhaust flows out the DPF.
The engine computer monitors the accumulation of
soot by measuring the back pressure in the DPF. If
position, for 1 second,
EVERSE
the back pressure is too high, soot is not incinerating
in the soot filter through normal engine operation. To
keep the DPF clear of soot, remember the following:
•
Passive regeneration occurs continuously while
the engine is running—run the engine at full
engine speed when possible to promote DPF
regeneration.
•
If the back pressure is too high, the engine
computer signals you through the InfoCenter
when additional processes (assist and reset
regeneration) are running.
•
Allow the assist and reset regeneration process to
complete before shutting off the engine.
Operate and maintain your machine with the function
of the DPF in mind. Engine load at high idle
engine speed generally produce adequate exhaust
temperature for DPF regeneration.
Important:
Minimize the amount of time that you
idle the engine or operate the engine at low-engine
speed to help reduce the accumulation of soot in
the soot filter.
CAUTION
The exhaust temperature is hot (approximately
600°C (1112°F) during DPF parked
regeneration or recovery regeneration. Hot
exhaust gas can harm you or other people.
• Never operate the engine in an enclosed
area.
• Make sure that there are no flammable
materials around the exhaust system.
• Never touch a hot exhaust system
component.
• Never stand near or around the exhaust
pipe of the machine.
DPF Soot Accumulation
•
Over time, the DPF accumulates soot in the soot
filter. The computer for the engine monitors the
soot level in the DPF.
•
When enough soot accumulates, the computer
informs you that it is time to regenerate the diesel
particulate filter.
•
DPF regeneration is a process that heats the DPF
to convert the soot to ash.
•
In addition to the warning messages, the computer
reduces the power produced by the engine at
different soot-accumulation levels.
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