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ACE in dry, secure location in the shop, not on the
machine.
HYDRAULIC SOLENOID VALVE
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
VS1A,S1A,S2A
VS1B,S1B,S2B
VS1A,S1A,S4A,S6A
VS1A,S1A,S4A,S7A
VS1A,S1A,S4A,S4B
S5A,S7A
S5A,S4B
S54,S6A
VS1A,S3A
VSIB,S3B
HEIGHT-OF-CUT SELECTION
POTENTIOMETER REPLACEMENT
The height-of-cut selection potentiometer is factory cali-
brated. If the height-of-cut selection potentiometer must
be replaced for any reason, the new potentiometer must
be calibrated to assure the correct clip. (If the poten-
tiometer is not calibrated correctly, the delivered clip
may be as much as 2 or 3 settings different from the
desired setting.) This calibration must be done by your
Toro distributor.
OPERATING CHARACTERISTICS
Familiarization—Before mowing grass, practice operat-
ing the machine in an open area. Start and stop the
engine. Operate in forward and reverse. Lower and raise
the cutting units and engage and disengage the reels.
When you feel familiar with the machine, practice oper-
ating up and down slopes at different speeds.
The brakes can be used to assist in turning the machine.
However, use them carefully, especially on soft or wet
grass conditions because the turf may be torn accidental-
ly. Individual turning brakes may also be used to help
Function
Front reel circuit
Rear reel circuit
Lift front wing cutting units
Lift center cutting unit
Lift rear cutting unit
Lower center cutting unit
lower rear cutting unit
Lower front wing cutting units
Backlap front cutting units
Backlap rear cutting units
the uphill wheel slips and loses traction. If this situation
occurs, depress uphill turn pedal gradually and intermit-
tently until the uphill wheel stops slipping, thus, increas-
ing traction on the downhill wheel.
WARNING: When operating the machine, always use
the seat belt and roll-over protection system together.
Warning System—If a warning light comes on during
operation, stop the machine immediately and correct the
problem before continuing. Serious damage could occur
if the machine is operated with a malfunction.
Mowing —Start the engine and move throttle to FAST
so the engine is running at maximum speed. Move the
ENABLE/DISABLE switch to ENABLE and use the
LOWER MOW/RAISE lever to control the cutting units
(front cutting units are timed to lower before the rear
cutting units). To move forward and cut grass, press the
traction pedal forward. Maintain a speed which does not
result in the Reel Control Light being illuminated.
Gradually increase or decrease the traction speed to
ensure proper clip is maintained.
Transport—Move the ENABLE/DISABLE switch to
DISABLE, lock the brake pedals together and raise the
cutting units to the transport position. Be careful when
driving between objects so you do not accidentally dam-
age the machine or cutting units. Use extra care when
operating the machine on slopes. Drive slowly and avoid
sharp turns on slopes to prevent roll overs. The cutting
units should be lowered when going downhill for steer-
ing control.
Selecting Clip Rate (Reel Speed)—The automatic clip
control programmed in the machine controller requires
that it be told at what height of cut the machine is being
operated and whether the machine is equipped with 5- or
11-blade reels. Refer to Selecting Clip Rate (Reel Speed.
When the machine is being operated in such a way that
it achieves the desired clip, the Reel Control light will
not light. If it does light, this indicates that the traction
speed is too low or too high for the machine to achieve
the desired clip.
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