Engine Starting - HUSTLER Z4 Owner's Manual

Control levers
shown in neutral position
Figure 3-2
Control lever
shown in park brake position
Figure 3-3
Figure 3-4
clutch switch.
Check tractor safety start interlock system daily, prior to
Deck lift pedal
B
operation. This system is an important tractor safety 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 is operating. This is a safety feature designed to prevent
runaway or accidental entanglement. To inspect the system:
1. The operator must be on the seat when testing the seat
switch.
2. Set both control levers in the park brake position.
3. Start the engine and allow it to warm up to operating
temperature.
4. With the deck clutch switch down and the control levers
in the park brake position, slowly raise off of the seat.
The engine should continue to run.
5. With the deck clutch switch up and/or the control levers
in the neutral position, slowly raise off of the seat. The
engine should stop.
6. If the engine fails to stop when the deck clutch switch is
up or one or both of the control levers 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 or closing) and if the cause can not be
determined, replace the seat switch.
If the problem can not be located, contact your Hustler Dealer.
WARNING: The safety interlock system should
always function per steps 4 and 5. If it does not func-
tion properly, it should be corrected immediately. Do
not operate machine without properly functioning seat
safety switch.

Engine starting

The tractor's safety start interlock system is also designed to
protect the operator and others from accidental injury due to
unintentional engine starting. The engine starting motor will not
engage until:
A. Control levers are in the park brake position.
B. Deck clutch switch is in the down (OFF) position.
WARNING: The safety interlock system must not be
disconnected or bypassed. Doing so could cause the
machine to operate unexpectedly resulting in personal
injury.
NOTE: The operator's seat is equipped with a separate
safety switch. If for any reason the operator should become
unseated when the control levers are not in the park brake posi-
tion (park brake switches are disengaged) or the deck clutch
switch is engaged the engine will stop.
The following steps are the correct procedures for starting the
engine. If difficulty is encountered, contact the Hustler Dealer
in your area.
1. Before starting tractor each day, perform daily pre-
operation checking. (See Safety Start Interlock System
section)
2. Make sure the control levers are in the park brake
position and deck clutch switch is disengaged. Only start
the engine from the operator's position.
3. Use choke, if unit is equipped with one, when engine is
cold, or if warm engine fails to start within 5 seconds of
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