Checking Interlock System; Operating Characteristics - Toro 30241 Operator's Manual

Danger
Under certain conditions, diesel fuel and fuel
vapors are highly flammable and explosive. A fire
or explosion from fuel can burn you and others
and can cause property damage.
Use a funnel and fill the fuel tank outdoors, in
an open area, when the engine is off and is cold.
Wipe up any fuel that spills.
Do not fill the fuel tank completely full. Add fuel
to the fuel tank until the level is 1 in. (25 mm)
below the bottom of the filler neck. This empty
space in the tank allows the fuel to expand.
Never smoke when handling fuel, and stay away
from an open flame or where fuel fumes may be
ignited by a spark.
Store fuel in a clean, safety-approved container
and keep the cap in place.
3. Open the air bleed screw on the fuel injection pump
(Fig. 29).
Figure 29
1. Fuel injection pump bleed
screw
4. Turn key in ignition switch to the ON position. Electric
fuel pump will begin operation, thereby forcing air out
around air bleed screw. Leave key in ON position until
solid stream of fuel flows out around screw. Tighten
screw and turn key to OFF.
Note: Normally, engine should start after above bleeding
procedures are followed. However, if engine does not start,
air may be trapped between injection pump and injectors;
refer to Bleeding Air From Injectors.

Checking Interlock System

The purpose of the safety interlock system is to prevent the
engine from cranking or starting unless the traction pedal is
in neutral and the PTO switch is in the OFF position. In
1
27
addition, the engine will stop when the PTO control is
engaged or traction pedal is depressed with operator off the
seat or when parking brake is engaged.
Caution
If safety interlock switches are disconnected or
damaged the machine could operate unexpectedly
causing personal injury.
Do not tamper with the interlock switches.
Check the operation of the interlock switches
daily and replace any damaged switches before
operating the machine.
Replace switches every two years regardless of
whether they are operating properly or not.
1. Move PTO switch to OFF position and remove foot
from traction pedal so it is fully released.
2. Rotate the ignition key to START. Engine should crank.
If engine cranks, proceed to step 3. If engine does not
crank, there may be a malfunction in the interlock
system.
3. Raise off the seat and engage the PTO switch while the
engine is running. The engine should stop within 2
seconds. If engine stops, the switch is operating
correctly; thus, proceed to step 4. If engine does not
stop, there is a malfunction in the interlock system.
4. Raise off the seat and depress the traction pedal while
engine is running the PTO lever is disengaged. The
engine should stop within 2 seconds. If engine stops, the
switch is operating correctly; thus, proceed to step 5 If
engine does not stop, there is a malfunction in the
interlock system.
5. Engage the parking brake. Depress the traction pedal
while engine is running and the PTO lever is
disengaged. The engine should stop within 2 seconds. If
engine stops, the switch is operating correctly; thus,
continue operation. If engine does not stop, there is a
malfunction in the interlock system.

Operating Characteristics

Practice driving the GROUNDSMASTER 228–D before
initial operation because it has a hydrostatic transmission
and its characteristics are different than some turf
maintenance machines. Some points to consider when
operating the traction unit and cutting unit are the
transmission, engine speed, load on the cutting blades, and
the importance of the brakes.
To maintain enough power for the traction unit and cutting
unit while mowing, regulate traction pedal to keep engine
rpm high and somewhat constant. A good rule to follow is:
decrease ground speed as the load on the cutting blades
increases; and increase ground speed as load on the blades
decreases. This allows the engine, working with the