Safety start interlock system
The tractor is equipped with a safety start interlock system consisting of the park brake switches, seat switch, and deck clutch switch.
Check tractor safety start interlock system daily, prior to 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 function properly, it should be corrected immediately. Do not operate machine without properly functioning seat safety switch.
Engine (gasoline) 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 position (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 cranking. Avoid flooding and operate engine without choking as soon as possible.
4.Set throttle at approximately 1/2 open position.
5.Insert key in ignition switch and rotate full clockwise to engage starting motor. Release key when engine starts.
IMPORTANT: The engine starter should not be operated for periods longer than 30 seconds at a time. An interval of at least two minutes should be allowed between such cranking periods to protect the starter from overheating and burn-out.
6.Perform test to make sure safety start interlock system is operating properly. Refer to Safety start interlock system section.
7.As soon as engine begins to run, check to make certain the oil warning light, check engine light and alternator warning light (if applicable) are off. If not, stop engine immediately and check for the cause.
8.Allow the engine to idle a few minutes before advancing the throttle and/or engaging the deck clutch.
Ambient | Preheating time |
temperature | Ordinary heat type |
| |
Above 10°C (50°F) | No Need |
| |
10°C (50°F) to | Approx. 6 seconds |
-5°C (23°F) | |
| |
Below -5°C (23°F) | Approx. 12 seconds |
| |
Limit of | |
continuous use | 20 seconds |
| |
Engine (diesel) starting
The Hustler Z Shibaura Diesel safety start interlock system is 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 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.
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.Set throttle at approximately 1/2 open position.
4.Insert key in ignition switch and rotate it to the “PRE-HEAT/RUN” position. It takes two seconds before the glo-plug light will come on. Wait for the glo-plug light to go off (approximately 6 seconds)
before rotating the key to the “START” position. This is necessary only when the temperature is below 50o F. This operation is not necessary when restarting a warm engine.
Shown in the chart are the standard preheating times for various temperatures. This operation, however, is not required when the engine is warmed up.
Failure to follow these recommendations can lead to premature failure of the starter motor and the fuel shut-off solenoid. NOTICE: Ether, or other starting fluids, must never be used as a starting aid with this engine. Warranty will be denied when engine damage results from such use.
5.Rotate ignition switch key full clockwise to engage starting motor. Release key when engine starts.
IMPORTANT: The engine starter should not be operated for periods longer than 30 seconds at a time. An interval of at least two minutes should be allowed between such cranking periods to protect the starter from overheating and burn-out.
6.Perform test to make sure safety start interlock system is operating properly. Refer to Safety start interlock system section.
7.As soon as engine begins to run, check to make certain the oil warning light is off. If not, stop engine immediately and check for the cause.
8.Allow the engine to idle a few minutes before advancing the throttle and/or engaging the deck clutch.
Stopping the engine
Use the following procedure to shut off the engine after operating the equipment.
1.Place the control levers in the park brake position
2.Disengage the deck clutch
3.Throttle back to low idle for a couple of minutes
4.Rotate ignition key counter-clockwise to the “OFF” position. Remove the key from switch before leaving the tractor.
