Testing The Safety Interlock System; Stopping The Engine; Driving - Toro 74390 Operator's Manual

1. Control panel
Disengaging the Blades
Push down on the blade control switch to move it to the Off
position and disengage the blades (Figure 16).
1. Control panel
Testing the Safety Interlock
System
Test the safety interlock system before you use the machine
each time. If the safety system does not operate as described
below, have an Authorized Service Dealer repair the safety
system immediately.
Figure 15
2. Blade control switch—On
position
Figure 16
2. Blade control switch—Off
1. While sitting on the seat, with the control levers in park
position, and move the blade control switch to On. Try
starting the engine; the engine should not crank.
2. While sitting on the seat, move the blade control
switch to Off. Move either motion control lever to the
center, unlocked position. Try starting the engine; the
engine should not crank. Repeat with the other motion
control lever.
3. While sitting on the seat, move the blade control switch
to Off, and lock the motion control levers in the park
position. Start the engine. While the engine is running,
engage the blade control switch, and rise slightly from
the seat; the engine should stop.
4. While sitting on the seat, move the blade control switch
to Off, and lock the motion control levers in the park
position. Start the engine. While the engine is running,
move the motion control levers to the center, unlocked
position, engage the blade control switch, and rise
slightly from the seat; the engine should stop.

Stopping the Engine

CAUTION
Engine damage can occur if the engine is stopped
suddenly from high speed loaded operation.
Reduce the engine speed to idle for one minute
before shutting the engine off.
1. Disengage the blades by moving the blade control
switch to Off (Figure 16).
2. Move the throttle lever to the Slow position (Figure
13).
3. Keep the engine running for one minute.
4. Turn the ignition key to Off (Figure 14) and remove
the key.

Driving

Driving the machine benefits from an understanding of
what zero turn radius mower means. The drive wheels turn
independently, powered by hydraulic motors on each axle;
hence one side can turn in reverse while the other turns
forward causing the machine to spin rather than turn. This
vastly improves the machine maneuverability but may require
some adjustment if the operator is unfamiliar.
WARNING
The machine can spin very rapidly. The operator
may lose control of the machine and cause personal
injury or damage to the machine.
• Use caution when making turns.
• Slow the machine down before making sharp
turns.
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