Jacobsen LF 4677 Turbo 67963, Safety, Operation And Maintenance Manual

Page: 23 / 118

OPERATION 5
23
5 OPERATION
5.1 DAILY INSPECTION ________________________________________________________
1. Perform a visual inspection of the entire unit. Look for
signs of wear, loose hardware, and missing or damaged
components. Check for fuel or oil leaks to ensure
connections are tight and hoses and tubes are in good
condition.
2. Check the fuel supply, radiator coolant level, crankcase
oil, and air cleaner indicator. All fluids must be at the
full level mark with engine cold.
3. Make sure all mowers are adjusted to the same cutting
height.
4. Visually check tires for proper inflation.
5. Test the interlock system.
5.2 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 mower switches are OFF. The
system also stops the engine if the operator leaves the
seat with the mower switch(es) ON, traction pedal out of
NEUTRAL, or parking brake DISENGAGED.
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:
l
the engine does not start in test 1;
l
the engine does start during tests 2,3 or 4;
l
the engine continues to run during tests 5 or 6.
3. Refer to the chart below for each test and follow the
check (
4
) 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 mower
switches are OFF. The engine should start.
Test 2:
The engine must not start if the mower switch is
ON (forward or reverse). Repeat test for each mower
switch.
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, turn
mower switch ON (forward or reverse), and lift your
weight off the seat. Repeat test for each mower switch.
H
Test 6:
Start the engine in the normal manner,
disengage parking brake, and lift your weight off the
seat.
H
H
Lift your weight off seat. The cutting units must stop rotating within seven (7) seconds.
CAUTION
The daily inspection should be performed only when
the engine is off and all fluids are cold. Lower mowers
to the ground, engage the parking brake, stop engine,
and remove ignition key.
!
WARNING
Never operate equipment with the interlock system
disconnected or malfunctioning. Do not disconnect
or bypass any switch.
!
Test
Operator
Seated
Parking
Brake
Traction Pedal
in Neutral
Mower
Switches
Engine
Starts
Yes No On Off Yes No On Off Yes No
1
4 4 4 4 4
2
4 4 4 4 4
3
4 4 4 4 4
4
4 4 4 4 4
5
4 H 4 4 4 H
6
4 H 4 4 4 H