Jacobsen TR3 User Manual

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JACOBSEN TR3
SAFETY, OPERATORS & MAINTENANCE MANUAL
7OPERATION
7.2 OPERATOR PRESENCE AND SAFETY INTERLOCK SYSTEM
1. The operator presence & safety interlock system prevents the engine from starting unless the parking
brake is on, and the mowing device is switched off. The system also stops the engine if the operator
leaves the seat with the mowing device engaged or the neutral latch depressed.
2. Perform each of the following tests to ensure the operator presence & safety interlock system is
functioning properly. Stop the test and have the system inspected and repaired if any of the tests fail
as listed below:
• The engine does not start in test 1;
• The engine does start during tests 2 or 3.
• The engine continues to run during test 4.
3. Refer to the chart below for each test and follow the check () marks across the chart. Shut engine
off between each test.
Test 1: Represents normal starting procedure. The operator is seated, parking brake is on, the
operators feet are off the pedals and the mower engagement device is off. The engine should start.
Test 2: The engine must not start if the mower engage device is on.
Test 3: The engine must not start if the Traction Pedal is depressed.
Test 4: Start the engine in the normal manner, then turn mower engage device on and lift your weight
off the seat. 
WARNING
Never operate the equipment with the
operator presence & safety interlock
system disengaged or malfunctioning. Do
not disconnect or bypass any switch.
Test
Operator
Seated
Parking
Brake
Switch
Mower
Switch
Traction
P e d a l in
Neutal
Engine
Starts
Yes No Yes No On Off Yes No Yes No
1  
2   
3   
4    
 L ift yo ur w e ig ht o ff s e a t. T he c utting units m us t s to p ro ta ting
within seven (7) seconds

Jacobsen TR3 Specifications

General

Brand	Jacobsen
Model	TR3
Category	Lawn Mower
Language	English