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Important: You must always complete this
procedure at least 3 times to ensure that the spray
system is fully clean, preventing damage to the
system.
14. Clean the strainer; refer to
Strainer (page
25).
Important: If you used wettable powder
chemicals, clean the strainer after each tank.
15. Using a garden hose, rinse off the outside of the
sprayer with clean water.
16. Remove the nozzles and clean them by hand. Replace
damaged or worn nozzles.
Calibrating the Section Valves
Important: If you have the Pro Control™ Spray System
installed, the boom bypass valves must be closed. Use
the following adjustment only when you are not using
the Pro Control Spray System.
Before using the sprayer for the first time or if the nozzles are
changed, adjust the section valves so that the pressure and
application rate remains the same for all boom sections when
you turn one or more sections off.
Note: The section valves must be calibrated each time the
nozzles are changed.
Important: If machine is equipped with a Pro Control™
Spray System, disregard the following steps below this
important note for calibrating the section valves and
read this notice: When using a Pro Control™ system,
the section valves are not used; close the section valves
by rotating the red bypass knobs clockwise. The valve
is closed once you feel a slight resistance while rotating
the knob. Applying excessive torque to the bypass knob
could damage the valve. The bypass knob may require
3 to 4 full rotations (360° = 1 rotation) to completely
close the valve. The numbers printed on the valve are
for reference only; setting the knob to "0" does not
guarantee the valve is closed. If you are using the Pro
Control™ system, you do not need to adjust the section
valves once they are closed. If you use the machine to
spray manually (without the Pro Control™ system), refer
to the steps for calibrating the boom bypass valves prior
to using the machine.
1. Select an open flat area to perform this procedure.
2. Fill the spray tank with clean water.
3. Lower the left and right boom sections.
4. Set the parking brake and start the engine.
5. Set all three section switches and the master boom
switch to the On position.
6. Use the application rate switch to adjust the pressure,
as read on the pressure gauge, until it is in the correct
Cleaning the Suction
range for the nozzles that you installed on the boom
sections (typically 276 kPa or 40 psi); refer to the
nozzle selection guide that is available through your
Authorized Toro Dealer.
7. Record the reading on the pressure gauge.
8. Turn off 1 of the boom section using the appropriate
section switch.
9. Adjust the section bypass valve
of the section control valve for the boom section you
turned off until the pressure reading on the gauge is
the same as the pressure reading that you recorded in
step 7.
1. Section bypass valves
10. Turn the boom on and off to verify the pressure does
not change.
11. Repeat steps
9
through
12. Drive the sprayer at the desired speed while spraying
and turn each boom section off individually.
Note: The pressure on the gauge should not change.
Agitation Bypass Valve Knob
Position
•
The agitation bypass valve is in the full Open position as
shown in A of
Figure
•
The agitation bypass valve is in the Close (0) position as
shown in B of
Figure
•
The agitation bypass valve is in an intermediate (adjusted
relative to the pressure gauge for the sprayer system)
position as shown in C of
31
(Figure
30) at the top
Figure 30
10
for the other boom sections.
31.
31.
Figure 31
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