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Toro
Lawn Mower
03721
Toro 03721 User Manual
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Diesel
Particulate
Filter
Regeneration
(continued)
InfoCenter
Advisory
and
Engine
W
arning
Messages—Ash
Accumulation
Indication
Level
Fault
Code
Engine
Speed
Reduction
Engine
Power
Rating
Recommended
Action
Level
1:
Engine
W
arning
G41
1642
Check
Engine
SPN
3720,
FMI
16
None
The
computer
de-
rates
the
engine
power
to
85%.
Service
the
DPF
.
Level
2:
Engine
W
arning
G41
1642
Check
Engine
SPN
3720,
FMI
16
None
The
computer
de-
rates
the
engine
power
to
50%.
Service
the
DPF
.
Level
3:
Engine
W
arning
G41
1644
Check
Engine
SPN
3720,
FMI
16
Engine
speed
at
maximum
torque
+
200
rpm
The
computer
de-
rates
the
engine
power
to
50%.
Service
the
DPF
.
Operation:
During
Operation
Page
5–22
3466-702
A
67
69
Table of Contents
default chapter
2
Table of Contents
2
Disclaimers and Regulatory Information
3
Chapter 1: Introduction
6
Intended Use
6
Getting Help
6
Manual Conventions
7
Safety Alert Classifications
7
Chapter 2: Safety
8
General Safety
8
Before Operation Safety
8
Fuel Safety
9
During Operation Safety
9
Rollover Protection System (ROPS) Safety
10
Machines with a Foldable Roll Bar
10
Slope Safety
11
After Operation Safety
11
Maintenance Safety
12
Engine Safety
12
Electrical System Safety
12
Cooling System Safety
13
Hydraulic System Safety
13
Blade Safety
13
Storage Safety
13
Safety and Instructional Decals
14
Chapter 3: Setup
23
Adjusting the Front Cutting Unit Roller Position
23
Installing the Cutting Units
23
Preparing the Machine
23
Preparing the Cutting Units
24
Positioning the Turf Compensating Spring and Installing the Hose Guide
24
Installing the Hose Guide
26
Positioning the Turf Compensating Spring
28
Installing the Kickstand
30
Increasing the Rear Cutting Unit Pivot Angle
30
Preparing to Install the Cutting Units
31
Installing the Front Cutting Units
31
Installing the Rear Cutting Units to the Lift Arms
31
Installing the Rear Cutting Units to the Lift Arms
32
Installing the Cutting Unit Lift-Arm Chains
33
Installing the Reel Motors
33
Entering Cutting Unit Settings
33
Preparing the Machine
34
Installing the CE Hood Lock
34
Installing the CE Decals
36
Applying the CE Decal
36
Applying the Year of Production Decal
37
Applying the CE Warning Decal
37
Chapter 4: Product Overview
38
Controls
38
Traction Pedal
39
Tilt-Steering Pedal
39
Brake Pedals
39
Pedal-Locking Latch
40
Parking-Brake Pedal
40
Key Switch
40
Engine-Speed Switch
40
Headlight Switch
41
Lower Mow/Raise Control Lever
41
Mow-Speed Limiter
42
Power Point
42
Bag Holder
42
Infocenter
43
Backlap Levers
43
Power-Takeoff (PTO) Switch
43
Fuel Gauge
44
Seat Controls
45
Specifications
46
Attachments/Accessories
46
Chapter 5: Operation
47
Before Operation
47
Performing Daily Maintenance
47
Fuel
47
Checking the Interlock Switches
49
Checking the Parking Brake and Traction Pedal Run-Interlock
50
Overview of the Infocenter Display
51
During Operation
58
Starting the Engine
58
Shutting off the Engine
58
Locking the Cutting-Unit Pivot
59
Adjusting the Turf-Compensation Spring
59
Cutting Grass with the Machine
60
Driving the Machine in Transport Mode
61
Adjusting the Cutting-Unit Counterbalance
62
Adjusting the Cutting Unit-Turnaround Height
64
Folding the Roll Bar
64
Raising the Roll Bar
66
Diesel Particulate Filter Regeneration
67
Operating Tips
80
After Operation
81
Pushing or Towing the Machine
81
Preparing the Machine to Push or Tow in Reverse
81
Preparing the Machine for Operation
82
Pushing or Towing the Machine Forward
83
Tie-Down Point Locations
84
Hauling the Machine
84
Recommended Maintenance Schedule
85
Daily Maintenance Checklist
89
Pre-Maintenance Procedures
91
Preparing for Maintenance
91
Opening the Hood
91
Closing the Hood
92
Accessing the Battery Compartment
92
Tilting the Seat
93
Lowering the Seat
93
Jacking Point Locations
93
Lubrication
95
Greasing the Bearings and Bushings
95
Grease Fitting Locations
96
Engine Maintenance
98
Engine Oil Specifications
98
Checking the Engine-Oil Level
99
Changing the Engine Oil and Filter
100
Servicing the Air Cleaner
101
Fuel System Maintenance
104
Inspecting the Fuel Lines and Connections
104
Draining the Fuel/Water Separator
104
Replacing the Water-Separator Filter
105
Replacing the Engine Fuel Filter
106
Draining and Cleaning the Fuel Tank
106
Cleaning the Fuel-Intake Screen
107
Servicing the Diesel-Oxidation Catalyst (DOC) and the Soot Filter
107
Electrical System Maintenance
108
Disconnecting the Battery
108
Connecting the Battery
109
Charging the Battery
109
Servicing the Battery
109
Replacing a Fuse
110
Drive System Maintenance
111
Checking the Tire Pressure
111
Torquing the Wheel Nuts
111
Checking for End-Play in the Planetary Drives
112
Checking the Planetary Gear-Drive Lubricant
112
Changing the Planetary-Gear-Drive Oil
113
Inspecting the Rear Axle
115
Checking the Oil Level of the Rear Axle
115
Changing the Oil in the Rear Axle
115
Inspecting the Reduction-Gear Case
116
Checking the Lubricant in the Reduction-Gear Case
116
Mow Speed-Spacer Table
117
Adjusting Maximum Mow-Ground Speed
117
Adjusting the Traction Drive for Neutral
119
Checking the Rear-Wheel Alignment
120
Adjusting the Rear-Wheel Toe-In
121
Cooling System Maintenance
122
Coolant Specifications
122
Checking the Coolant Level
123
Servicing the Engine Cooling System
124
Brake Maintenance
126
Adjusting the Service Brakes
126
Belt Maintenance
128
Tensioning the Alternator Belt
128
Hydraulic System Maintenance
128
Inspecting the Hydraulic Lines and Hoses
128
Hydraulic Fluid Specifications
128
Checking the Hydraulic-Fluid Level
129
Replacing the Hydraulic Filters
130
Changing the Hydraulic Fluid
131
Cutting Unit Maintenance
133
Backlapping the Cutting Units
133
Chassis Maintenance
136
Inspecting the Seat Belt
136
Cleaning
137
Washing the Machine
137
Chapter 7: Storage
138
Storing the Machine
138
Storing the Battery
138
The Toro Warranty
140
California Proposition 65 Warning Information
141
Other manuals for Toro 03721
Service Manual
468 pages
Installation Instructions
2 pages
4
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Toro 03721 Specifications
General
Brand
Toro
Model
03721
Category
Lawn Mower
Language
English
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