Operating Characteristics; Reversing Fan Operation - Toro 31598 Operator's Manual

Operating Characteristics

Practice driving the machine because it has a hydrostatic
transmission and its characteristics are different than many
turf maintenance machines. Some points to consider when
operating the traction unit, cutting unit, or other implements
are the transmission, engine speed, load on the cutting blades
or other implement components, and the importance of the
brakes.
To maintain enough power for the traction unit and
implement while operating, regulate the traction pedal to keep
the engine speed rpm high and somewhat constant. A good
rule to follow is to decrease the ground speed as the load
on the implement increases, and increase the ground speed
as the load decreases.
Therefore, allow the traction pedal to move backward as the
engine speed rpm decreases, and depress the pedal slowly as
the engine speed rpm increases. By comparison, when driving
from one work area to another, with no load and cutting unit
raised, have the throttle in the highest position and depress
the traction pedal slowly but fully to attain maximum ground
speed.
The traction assist enhances traction drive performance in
compromised operating conditions. The traction assist is
for use in low speed range only. When approaching an area
known to cause wheel spin, depress and hold traction assist
switch until completely past the area. If a tire spins while
climbing or maneuvering on slopes, depress switch and slowly
drive out of area. If both a front and rear wheel spins, the
steering brake can be feathered to transfer the torque from
the spinning wheels to opposite front wheel.
The brakes can be used to assist in turning the machine.
However, use them carefully, especially on soft or wet grass
because the turf may be torn accidentally. Another benefit
of the brakes is to maintain traction. For example, in some
slope conditions, the uphill wheel slips and loses traction. If
this situation occurs, depress the uphill turn pedal gradually
and intermittently until the uphill wheel stops slipping, thus,
increasing traction on the downhill wheel.
Use extra care when operating the machine on slopes. Make
sure the seat belt is buckled. Drive slowly and avoid sharp
turns on slopes to prevent roll overs. For steering control, the
cutting unit must be lowered when going downhill.
WARNING
This product is designed to drive objects into the
ground where they lose energy quickly in grass
areas. However, careless operation, combined with
terrain angle, ricochets, or improperly positioned
safety guard can lead to thrown object injuries.
• When a person or pet appears suddenly in or
near the mowing area, stop mowing .
• Do not resume mowing until the area is cleared.
Before stopping the engine, disengage all controls and move
the throttle to the slowest position. Moving the throttle to the
slowest position reduces high engine speed rpm, noise, and
vibration. Turn the key to O
Before transporting the machine, raise the cutting units and
secure the side cutting unit transport latches
1. Transport latch

Reversing Fan Operation

The fan speed will be controlled by hydraulic oil temperature,
air intake temperature and engine coolant temperature. A
reverse cycle is automatically initiated and only happens when
either the engine coolant or hydraulic oil temperature reaches
a certain point. This reversal will help blow debris off the rear
screen and lower the engine and hydraulic oil temperatures
(Figure 43).
G010392
37
to stop the engine.
FF
(Figure
Figure 42
Figure 43
42).