BigDog MOWER CO, Общее руководство по обслуживанию

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121536 4-1 REV A
POWER UNIT MAINTENANCE
Steering Adjustments
Steering control lever neutral adjustment
The mower’s steering has been factory adjusted to elimi-
nate creeping when the steering control levers are in the neu-
tral position. However, should the mower begin to creep, the
steering control lever linkage can be adjusted.
Before considering any adjustment, check the tire air pres-
sure. Unequal tire pressure will cause the mower to drift to
one side. Refer to the tire pressure information in the Tires
section for detailed information.
NOTE: Proper park brake adjustment must be completed
before the steering control lever neutral adjustment can be
done. Refer to the Park Brake Spring Adjustment section for
detailed information.
Fine adjustment to the unit’s steering is made with the
transmission’s control rod.
Neutral is properly adjusted when the steering control
levers are in the park brake position and the transmissions
do not “whine”.
If this occurs, the steering control linkage may be adjusted
as follows:
1. Shut engine off, place steering control levers in the
park brake position, disengage deck clutch, remove
ignition switch key and disconnect negative battery
cable before doing any adjustments.
2. Raise the rear of the mower and block with certified
jack stands. Remove the rear wheels.
3. Chock the front tires.
4. Make sure both steering control levers are in the park
brake position. Figure 4-1
5. Loosen the nuts adjacent to the steering bushing.
Figure 4-2
6. Place a clamp on the transmission pump arm as
shown in Figure 4-3.
This procedure will require that the unit be raised
to allow the drive wheel to rotate.
• Block the mower up off of the ground using
only appropriate vehicle stands (minimum
weight rating of 2000 pound)s. Use in pairs
only. Follow the instructions supplied with
the vehicle stands.
• Do not allow the wheels to come in contact
with the floor or any object that would permit
the unit to propel itself.
• To prevent injury stay clear and exercise cau-
tion when rotating the wheels.
Exercise extreme caution when the transmissions
are engaged.
• Keep hands, hair, clothing, etc., clear of the
cooling fans on top of the transaxles to pre-
vent entanglement.
Untrained maintenance personnel should never
attempt to make any adjustments or repairs to the
mower’s drive system while the engine is running.
The following procedures should be performed by
trained maintenance personnel only.
WARNING
WARNING
WARNING
Shown with steering control levers in the park brake
position
A. Steering control lever
Figure 4-1
A. Bushing B. Nuts
Figure 4-2
A
A
A
B