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OPERATION 6
6.2 OPERATOR PRESENCE AND SAFETY INTERLOCK SYSTEM _________________
1. The Operator Presence And Safety Interlock System will not allow the engine to start unless the
operator is sitting in the seat, the parking brake is engaged and the cutter switch is disengaged. The
system stops the engine if the operator leaves the seat with the cutters engaged.
2. Do each of the tests as shown below, to make sure that the Operator Presence And Safety Interlock
System operates. If any of the tests fail, stop the test and have the system inspected and repaired.
a. The engine does not start during test 1
b. The engine does start during tests 2, 3 and 4
c. The engine continues to run during tests 5 and 6
Refer to the chart below for each test and follow the check marks across the chart. Turn off the engine between
each test.
TEST 1: The test shows the normal engine start procedure. The operator is in the seat, parking brake switch is in
the ON position, the traction pedal is in the NEUTRAL position and the mow switch is in the OFF position. The
engine will start.
TEST 2: The engine must not start if the mow switch is in the ON position.
TEST 3: The engine must not start if the parking brake switch is in the OFF position.
TEST 4: The engine must not start if the traction pedal is out of the NEUTRAL position.
TEST 5: Start the engine with the normal procedure. Turn on the mow switch and lift your weight off the seat. The
engine must stop. The cutting unit reels must not rotate after seven (7) seconds.
TEST 6: Start the engine with the normal procedure. Turn off the parking brake switch and lift your weight off the
seat. The engine must stop. The cutting unit reels must not rotate after seven (7) seconds.
WARNING
Do not operate the equipment with the operator presence and safety interlock system disengaged or
while the equipment has defects. Do not disconnect any switch.
Test Operator Seated Mow Switch OFF Parking Brake
Switch ON
Traction Pedal in
Neutral
Engine Starts
Yes No Yes No Yes No Yes No Yes No
1
2
3
4
5 H H H
6 H H H
H Start the engine with the normal procedure, move position of the switch and lift your weight off the seat.
The engine must stop within 3 seconds and the cutting unit reels must not rotate after 7 seconds.
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