Jacobsen 70528 Safety & Operation Manual - Caution

5    OPERATION

11

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 dam-

aged 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 start-

ing unless the parking brake is engaged, the traction

pedal is in neutral and the power take-offswitch is

OFF. The system also stops the engine if the opera-

tor leaves the seat with the power take-off switch 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 power

take-off switch is OFF. The engine should start.

Test 2:

 The engine must not start if the power take-

off 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 power take-off 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 engine will shut down.

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

Power Take-off

Switch

Engine 

Starts

Yes

No

Engaged

Disengaged

Yes

No

On

Off

Yes No

1

✔

✔

✔

✔

✔

2

✔

✔

✔

✔

✔

3

✔

✔

✔

✔

✔

4

✔

✔

✔

✔

✔

5

✔

★

✔

✔

✔

★

6

✔

★

✔

✔

✔

★