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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 steering 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 steering control levers in the
park brake position, slowly raise off of the seat. The engine should con-
tinue to run.
5. With the deck clutch switch up and/or the steering control levers in the
neutral, forward or reverse 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 steering control levers are 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 deter-
mined, replace the seat switch.
If the problem can not be located, contact your Hustler Dealer.
WARNING: The safety interlock system should always func-
tion 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.
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 start-
ing. The engine starting motor will not engage until:
A. Steering 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 discon-
nected 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 steering con-
trol levers are not in the park brake position (park brake switches are disen-
gaged) 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 steering control levers are in the park brake position and
deck clutch switch is disengaged. Only start the engine from the opera-
tor’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 cranking. Avoid flooding and
operate engine without choking as soon as possible.
4. Set throttle at approximately 1/2 open position.
Figure 3-3
Figure 3-4
Steering control levers in
park brake position
Deck lift pedal
A - Choke E - Oil pressure light
B - Throttle F - 20 amp fuse
C - Deck clutch switch G - 10 amp fuse
D - Ignition switch
A
B
F
G
E
C
D
Figure 3-1
Figure 3-2
Steering control lever
Shown with steering control
levers in neutral position