Hydraulic Valve Solenoid Functions; Operating Tips - Toro 30859 Operator's Manual

Note: Make sure correct overlay decal is positioned
on Diagnostic ACE.
6. Turn the key switch to the ON position, but do not
start machine.
Note: The red text on the overlay decal refers to input
switches and the green text refers to outputs.
7. The "outputs displayed" LED, on lower right column
of Diagnostic ACE, should be illuminated. If the
"inputs displayed" LED is illuminated, press the toggle
button, on the Diagnostic ACE, to change the LED to
"outputs displayed".
Note: It may be necessary to toggle between "inputs
displayed" and "outputs displayed" several times to do
the following step. To toggle back and forth, press
the toggle button once. This may be done as often as
required. Do not hold the button.
8. Sit on the seat and attempt to operate the desired
function of the machine. The appropriate output
LEDs should illuminate to indicate that the ECM is
turning on that function.
Note: If the correct output LEDs do not illuminate, verify
that the required input switches are in the necessary positions
to allow that function to occur. Verify correct switch function.
If the output LEDs are on as specified, but the machine does
not function properly, this indicates a non-electrical problem.
Repair as necessary.
Note: If each output switch is in the correct position and
functioning correctly, but the output LEDs are not correctly
illuminated, this indicates an ECM problem. If this occurs,
contact your Toro Distributor for assistance.
Important: The Diagnostic ACE display must not be
left connected to the machine. It is not designed to
withstand the environment of the machine's every day
use. When done using the Diagnostic ACE, disconnect
it from the machine and connect loop-back connector
to harness connector. The machine will not operate
without loopback connector installed on the harness.
Store the Diagnostic ACE in dry, secure location in the
shop, not on the machine.
Hydraulic Valve Solenoid
Functions
Use the list below to identify and describe the different
functions of the solenoids in the hydraulic manifold. Each
solenoid must be energized to allow function to occur.
Solenoid
PRV2 Front mower circuit
PRV1 Rear mower circuit
PRV Lift/lower cutting decks
S1 Lower cutting decks
S2 Lower cutting decks

Operating Tips

Familiarization
Before mowing grass, practice operating the machine in an
open area. Start and stop the engine. Operate in forward
and reverse. Lower and raise the cutting decks and engage
and disengage the mowers. When you feel familiar with the
machine, practice operating up and down slopes at different
speeds.
Warning System
If a warning light comes on during operation, stop the
machine immediately and correct the problem before
continuing operation. Serious damage could occur if you
operate the machine with a malfunction.
Mowing
Start the engine and move the throttle to the Fast position.
Move the Enable/Disable switch to the Enable position and
use the Lower Mow/Raise lever to control the cutting decks.
To move forward and cut grass, press the traction pedal
forward.
Note: Allow the engine to idle for 5 minutes before shutting
it off after a full load operation. Failure to do so may lead to
turbo-charger trouble.
Mow when the Grass is Dry
Mow either in the late morning to avoid the dew, which causes
grass clumping, or in late afternoon to avoid the damage
that can be caused by direct sunlight on the sensitive, freshly
mowed grass.
Select the Proper Height-of-Cut Setting
to Suit Conditions
Remove approximately one inch or no more than 1/3 of the
grass blade when cutting. In exceptionally lush and dense
grass you may have to raise the height–of–cut setting.
27
Function