OPERATION 4
GB-12
4
OPERATION
4.1 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 con-
nections are tight and hoses and tubes are in good con-
dition.
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.
Note: For more detailed maintenance information,
adjustments and maintenance/lube charts, see the
Parts & Maintenance manual.
4.2
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 switch(es) is “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:
●
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.
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 mower
switch(es) is ‘OFF”. The engine should start.
Test 2: The engine must not start if the mower 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
mower 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.
★
★
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.
!
Interlock System Check
Test
Operator
Seated
Parking
Brake
Traction Pedal
in Neutral
Mower
Switch
Engine
Starts
Yes
No
On
Off
Yes
No
On
Off
Yes No
1
✔
✔
✔
✔
✔
2
✔
✔
✔
✔
✔
3
✔
✔
✔
✔
✔
4
✔
✔
✔
✔
✔
5
✔
★
✔
✔
✔
★
6
✔
★
✔
✔
✔
★
