HUSTLER FasTrak SD, Operator'S Manual, Page: 19 / 43

602901 3-5 REV G
obstructions.
Safety Start Interlock System
The mower is equipped with a safety start interlock system
consisting of the park brake switches, seat switch, and deck
clutch switch.
Check the mower’s safety start interlock system daily,
prior to operation. This system is an important mower safety
feature. It should be repaired immediately if it malfunctions.
The machine incorporates a separate seat switch which will stop
the engine when the operator is unseated for any reason while
the mower 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 continue to run.
5. With the deck clutch switch up and/or the steering 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 steering 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 cannot be located, contact your Hustler
®
Dealer.
Engine Starting
The mower’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:
1. Steering control levers are in the park brake position.
2. Deck clutch switch is in the down (OFF) position.
NOTE: The operator’s seat is equipped with a separate
safety switch. If for any reason the operator should become
Figure 3-2
Figure 3-3
Figure 3-4
Shown with steering control
levers in neutral position
Steering control lever
Shown with steering control
levers in park brake position
Deck lift pedal
WARNING
The 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 a
properly functioning seat safety switch.
WARNING
The safety interlock system must not be disconnected or
bypassed. Doing so could cause the machine to operate
unexpectedly resulting in personal injury.