Toro 41163 Operator's Manual page 25

5. Use the [+] or [–] buttons to select desired units of
measure.
6. Press [CAL] until the red light turns off. You can also
exit calibration mode by driving the sprayer.
Calibrating the Flowmeter
The Spray Pro comes approximately calibrated for the
flowmeter. Complete the following procedure to fine tune
the flowmeter calibration:
1. Set the parking brake.
2. Fill the sprayer tank with a known quantity of water, at
least 100 US gallons (380 L).
Note: If you park the sprayer on a flat, level surface and
fill the tank until the water over flows out of the top of
the tank, you will have 164 US gallons (621 L).
Note: Do not rely on the marks on the side of the tank
for measuring the water for this procedure. They are
approximate measurements, but not accurate enough for
this calibration.
3. Set the pump switch to the On position to start the
pump.
4. Set all three boom switches and the master boom switch
to the On position. Run the booms only until the air is
purged from the line, then turn them off using the
master boom switch.
5. Turn the selection dial to the Total Volume position.
6. Press and hold [RESET] until the display reads "0."
7. Set the master boom switch to the On position and run
the booms until all the water is out of the tank, then stop
them using the master boom switch.
8. Compare the volume displayed on the monitor to the
volume of water you put into the tank.
• If the volumes are the same, you do not need to
calibrate the monitor any further.
• If the values are different, continue with the rest of
this procedure.
9. With the selection dial set to the Total Volume position,
press and hold [CAL] until the monitor displays "CAL
HOLD" and the red light on the monitor illuminates.
The display will alternate between the total volume
value and the flow calibration value.
10. When the total volume value is displayed, use the [+] or
[–] buttons to change it to the amount of water you put
in the tank.
11. When the display begins alternating again, the flow
calibration value will have changed; write this number
down and save it. This is the calibration value for your
sprayer.
12. Press [CAL] until the red light turns off. You can also
exit calibration mode by driving the sprayer.
Calibrating the Speed Sensor
The Spray Pro comes approximately calibrated for the
speed sensor. Complete the following procedure to fine
tune the speed sensor calibration:
1. Check and fill all tires; refer to Checking Tire Pressure,
page 14.
2. Fill the fresh water tank.
3. Fill the sprayer tank half-full of water.
4. Select a straight, flat track of ground that is similar to
your turf conditions.
Note: Using a road or other paved surface could cause an
inaccurate reading when you later drive the sprayer on turf.
5. Measure 500 feet, marking both the start and end points.
6. Position the sprayer about 30 feet behind the starting
point.
7. Set the pump and the master boom switches to the Off
position. The monitor should display "HOLD."
8. Turn the selection dial to the Distance position.
9. Press and hold [RESET] until the display reads "0."
10. Drive the machine from the start point you marked to
the 500 ft end point. Ensure that you come up to speed
before reaching the start point and do not stop or brake
until after you pass the end point. When you reach the
start point, press the master boom switch to start the
distance tracking with the monitor.
11. When you reach the end point, set the master boom
switch to the Off position to stop the monitor.
12. Look at the distance displayed on the monitor.
• If it reads "500 feet," you do not need to calibrate
the monitor any further.
• If it does not read "500 feet," continue with the rest
of this procedure.
13. Set the parking brake.
14. With the selection dial set to the Distance position,
press and hold [CAL] until the monitor displays "CAL
HOLD" and the red light on the monitor illuminates.
The display will alternate between the speed calibration
value and the distance value.
25