20
Note: Note: It may be necessary to bleed the air out of the
fuel line between the fuel filter / water separator and the
injection pump. To do this, loosen the fitting on the
injection pump (Fig. 21) and repeat bleeding procedure.
1
Figure 21
1. Injection pump fitting
Checking the Interlock System
The purpose of the interlock system is to prevent the engine
from cranking or starting unless the traction pedal is in
NEUTRAL and the cutting unit engagement switch is
DISENGAGED. In addition, the engine will stop when the
cutting unit engagement switch is engaged or traction pedal
is depressed with operator off the seat, or if the parking
brake is engaged.
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.
Caution
1. In a wide open area free of debris and bystanders, lower
cutting unit to the ground. Stop engine.
2. Move cutting unit engagement switch to
DISENGAGED position and remove foot from traction
pedal so it is fully released.
3. Rotate the ignition key to START. Engine should start.
If engine starts, proceed to step 4. If engine does not
start, there may be a malfunction in the interlock
system.
4. Rise from the seat and engage the cutting unit
engagement 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 5. If
engine does not stop, there is a malfunction in the
interlock system.
5. Engage parking brake and depress the traction pedal
while engine is running and the cutting unit engagement
switch 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.
6. Rise from the seat and depress the traction pedal while
engine is running and the cutting unit engagement
switch 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
Familiarization
Before mowing grass, practice operating machine in an
open area. Start and stop the engine. Operate in forward
and reverse. When you feel familiar with the machine,
practice operating around trees and obstacles. Also drive up
and down slopes at different speeds.
When operating 4-wheel drive machine, always use
the seat belt and ROPS together and have seat
pivot retaining pin installed.
Warning
Another characteristic to consider is the operation of the
brake pedals. 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: When operating on a sidehill, the uphill wheel
slips and loses traction. If this situation occurs, depress
uphill brake pedal gradually and intermittently until the
uphill wheel stops slipping, thus, increasing traction on the
downhill wheel.
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 the
machine is operated with a malfunction.
Mowing
When you are at the area to be mowed, release cutting unit
transport latches.
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