Interlock System - Jacobsen 67971 – LF 3400 Dealer's Manual

3.5

Interlock System __________________________________________________________

1. The interlock system prevents the engine from starting
unless the parking brake is engaged, the traction pedal
is in neutral, and the reel switch is OFF. The system
also stops the engine if the operator leaves the seat
with the reel switch ON, traction pedal out of NEUTRAL,
or parking brake DISENGAGED.
!
Never operate equipment with the Interlock
System disconnected or malfunctioning. Do not
disconnect or bypass any switch.
2. Perform each of the following tests to insure the
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, 3, or 4;
the engine continues to run during tests 5 or 6.
Test
Operator
Seated
Yes
1
2
3
4
5
6
Lift your weight off seat. The engine must shut down and cutting units must stop rotating within seven (7) seconds.
WARNING
Interlock System Check
Parking
Brake
No On Off
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 engaged, the
operator's feet are off the pedals, and the reel switch is
OFF. The engine should start.
Test 2: The engine must not start if the reel switch is
ON.
Test 3: The engine must not start if the parking brake is
DISENGAGED.
Test 4: The engine must not start if the traction pedal is
pressed.
Test 5: Start the engine in the normal manner then turn
reel switch ON and lift your weight off the seat.
Test 6: Start the engine in the normal manner then
disengage parking brake and lift your weight off the
seat.
Traction Pedal
in Neutral Switch
Yes No On
SET-UP
Reel Engine
Starts
Off Yes
3
No
13