Hustler Turf 4420 Lawn Mower User Manual


 
attachment and is described in more detail in the
operating instructions provided with the attachment.
Instrumentation
11. Electronic hour meter (Fig. 3-5) – registers 1/10 hour
increments up to 9,999.9 total hours. Connected to the
ignition switch, the meter records the accumulative
time while the ignition key is switched to the ON
position.
Audible alarm signal (not shown) will sound
when the ignition switch is turned to the ON or
START position. It will silence when the engine
starts. This alarm will also sound to indicate a
problem with low engine oil pressure or high
water temperature. If alarm sounds when the
engine is running, check the instrument warning
lights to determine problem area.
12. Warning lights (Fig. 3-4) – a cluster located on the
footrest panel directly behind the neutral locks. These
lights will come on if an operating problem exists with
the engine oil, cooling or electrical alternator system.
Oil pressure warning light – this light comes on
when the ignition switch is placed in ON
position, and stays lit until engine is running and
a safe oil pressure is developed. If light comes
on during operation, shut off the engine
immediately and locate the problem.
Temperature warning light – this light will
come on when the engine coolant temperature
reaches an unsafe level during operation. If light
comes on, shut down the machine as soon as
possible. Never risk continued operation when
light remains on; high temperatures can severely
damage the engine.
Alternator warning light – this light will come
on when the ignition switch is placed in the ON
position, and stays lit until the engine is running
and alternator is supplying the electrical system.
If light remains on while engine is running, it
indicates that the battery is being discharged.
Pre-heat light (models 4200 and 4400) – this
light comes on when ignition switch is placed in
the PRE-HEAT position to indicate that the
diesel engine glow plugs are operating.
Pre-heat light (models 4420 and 4600) – this
light comes on when ignition switch is placed in
the PRE-HEAT position to indicate that the
diesel engine glow plugs are operating. The light
will go off when the engine is ready to start.
Safety start interlock system
Check tractor safety start interlock system daily, prior to
operation. This system is an important tractor feature. It
should be repaired immediately if it malfunctions. The
machine incorporates a separate seat switch which will stop
the tractor engine when the operator is unseated for any
reason while the tractor, mower or other attachment is
operating. This is a safety feature designed to prevent
runaway or accidental entanglement. To inspect system:
1. The operator must be on the seat when testing the seat
switch.
2. Set parking brake and set the steering control lever in
the neutral position and disengage pump clutch.
(Fig. 3-7)
3. Start the engine and allow it to warm up to operating
temperature.
4. With the front neutral lock in the up position and/or the
clutch switch on, slowly raise off of the seat. The
engine should stop within one second.
5. With the front neutral lock in the down position and
the clutch switch off, slowly raise off of the seat. The
engine should continue to run.
6. If the engine fails to stop when the clutch switch is on
or front neutral lock lever is up and the operator is off
the seat, check the function of the seat switch. If the
seat switch is not operating properly (is not opening
and closing) and if the cause can not be determined,
replace the seat switch.
If the problem can not be located, contact the Hustler
Service Department.
This safety interlock system should always function
per steps 4 and 5. If it does not function properly, it
should be corrected immediately. Do not operate
machine without properly functioning seat safety switch.
IMPORTANT: Never switch the PTO on unless it is
securely connected to a suitable attachment.
Engine starting
Your Hustler tractor incorporates a safety interlock
system. Designed to protect the operator and others from
accidental injury, this system prevents unintentional engine
starting. The engine starting motor will not engage until:
A. Steering control lever front and rear neutral locks set.
B. PTO clutch switch is in the OFF position.
WARNING: The safety interlock system must
not be disconnected or bypassed.
NOTE: The operator’s seat is equipped with a separate
safety switch. If for any reason the operator should become
unseated when the neutral lock is disengaged, or the PTO
switch is in the ON position, this switch will open and
engine will stop.
Before engaging the starting motor, disengage the
hydraulic clutch lever to lessen drag on the starter motor,
particularly when oil is cold. Always rotate the key switch
to the ON position to make sure that each warning light is
operating.
The following is general information taken from the
respective engine owner’s manual. If difficulty is
encountered, refer to the engine manual for more specific
details.
Models 4200/4400/4420/4600:
1. Before starting tractor each day, perform daily pre-
operation checking.
728444 Rev. 11/02
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