Adjusting mower deck wheels, Testing safety systems, Testing park brake switch – John Deere la105 User Manual

Page 17: Testing park brake, Operating

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Operating - 16


5. Measure the front edge of the mower deck directly below the front draft
arm hanger at point (A).

• If necessary, turn the front draft arm nut (C) counterclockwise so the
front edge of the mower deck is 3-6 mm (1/8-1/4 in.) lower than the rear
corners of the mower deck.

Adjusting Mower Deck Wheels

1. Park machine safely. (See Parking Safely in the SAFETY section.)

2. Inflate tires to the correct pressure.

3. Lower mower deck to the desired mowing position.

NOTE: Bottom of wheels should be approximately 3-13 mm (1/8-1/2
in.) from the ground.


4. Check each mower wheel position. Remove nut (A) and bolt (B), and
move mower wheel to proper hole.


A- 38 mm (1.5-In.)

B- 51 mm (2-In.)

C- 64 mm (2.5-In.)

D- 76 mm (3-In.) and above

5. Install bolts and nuts to lock wheels in position. Tighten nuts to 34 N•m
(25 lb-ft).

Testing Safety Systems

The safety systems installed on your machine should be checked before
each machine use. Be sure you have read the machine operator manual
and are completely familiar with the operation of the machine before
performing these safety system checks.

Use the following checkout procedures to check for normal operation of

If there is a malfunction during one of these procedures, do not operate
machine. See your authorized dealer for service.

Perform these tests in a clear open area. Keep bystanders away.

Testing Park Brake Switch

1. Park machine safely. (See Parking Safely in the SAFETY Section.)

2. Sit on seat.

3. Unlock the park brake.

4. Try to start engine.

Result: Engine must not start. If engine starts, there is a problem with
your safety interlock circuit.

Testing Park Brake

1. Park machine safely. (See Parking Safely in the SAFETY Section.)

2. Lock the park brake.

3. Put transmission in neutral. Engage free-wheeling lever on units with an
automatic transmission.

4. Try to push machine manually.

Result: Park brake must prevent machine from moving. If machine moves,
parking brake needs to be adjusted.

IMPORTANT: Avoid damage! The mower deck can be damaged if
mower wheels are adjusted wrong:

• Wheels must not ride on ground supporting mower weight.

• Check wheel adjustment each time cutting height is changed.








CAUTION: Avoid injury! Engine exhaust fumes contain

carbon monoxide and can cause serious illness or death.

Do not run an engine in an enclosed area, such as a garage, even
with doors or windows opened.

Move the machine to an outside area before running the engine.

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