User Guide

throttle back to 1/2 throttle for a couple of minutes;
then rotate ignition key counter-clockwise to the OFF
position. Remove the key from switch before leaving
the tractor and engage the park brake.
WARNING: Never leave the machine
unattended with key in ignition switch.
Cold weather pump clutch
The TrimStar Hydro is equipped with a pump clutch that
disengages the pump clutch belt. When the belt is
disengaged, the engine will start easier in colder temp-
eratures.
To disengage the pump clutch, pull the chain until the
tension is released from the pump drive belt and latch in the
slot. Fig. 3-7
To engage the pump clutch, with H-bar locked in
neutral, release the chain from the latching slot.
Never operate the unit with the pump clutch partially
engaged. Make sure the clutch is completely released and
the chain has slack.
Safety interlock system
The unit is equipped with a safety interlock system
consisting of the cruise control neutral switch, operator
presence control levers (Fig. 3-4), and deck clutch switch.
Check the safety interlock system daily, prior to
operation. This system is an important safety feature. It
should be repaired immediately if it malfunctions. The
machine incorporates two operator presence control
switches which will stop the tractor engine when the
operator releases both of the operator presence control levers
for any reason while the tractor is operating. However, if
only one operator presence control lever is released, the unit
will continue to operate. This is a safety feature designed to
prevent runaway or accidental entanglement. To inspect the
system:
1. Place the H-bar lever in the neutral position, move
cruise control to the neutral (down position), and move
deck clutch switch to the disengaged (down) position.
2. Start the engine and allow it to warm up to operating
temperature.
3. With the cruise control out of neutral (up) position
and/or the deck clutch switch engaged (up position),
slowly release both operator presence control levers.
The engine should stop within a few seconds.
4. Place the cruise control to the neutral (down) position
and the deck clutch switch disengaged (down)
position. The engine should continue to run without
the operator presence control switches engaged.
5. If the engine fails to stop when the deck clutch switch
is engaged or the cruise control is not in the neutral
position and both operator presence control levers are
released, check the function of the operator presence
control switches. If these switches are not operating
properly (not opening or closing) contact your
Authorized Hustler Dealer.
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
properly functioning operator presence control
switches.
Moving unit with stalled engine
If it becomes necessary to move the tractor when the
engine is inoperative, the integrated pump/motor units are
equipped with bypass valves. Before moving the unit, shift
the park brake lever to the bypass valve position. (Fig. 3-8)
Do not tow the machine. Move it by hand or use a winch
to load on a trailer for transporting.
When transporting on another vehicle, the unit must be
tied down to the transporting vehicle.
IMPORTANT: Always make certain the park brake
lever is returned to the drive position before running the unit
following repairs.
Steering the unit
DANGER: Never make sudden stops or reverse
direction, especially when operating on a slope.
The steering is designed for sensitive response.
Rapid rotation of the H-bar handle in either
direction could result in a reaction of the tractor
that can cause serious injury.
Figure 3-8
Park
brake
lever
Shown in the bypass valve position
Chain
Figure 3-7
Slot
104893 10/05
3-3