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Drive System
Maintenance
Adjusting the Tracking
Note: Determine the left and right sides of the machine
from the normal operating position.
Important: Adjust the handle neutral and hydraulic
pump neutral before adjusting the tracking. Refer
to Adjusting the Handle Neutral and Adjusting the
Hydraulic Pump Neutral.
1. Push both control levers forward the same distance.
2. Check if the machine pulls to one side. If it does,
stop the machine and set the parking brake.
3. Unlatch the seat and tip the seat up to access the
pump control rod.
4. Loosen the locknut at the ball joint on right hand
pump control rod (Figure 42).
• To make the machine go right, rotate the double
nuts on rod to the right side of the machine.
• To make the machine go left, rotate the double
nuts on rod to the left side of the machine.
5. Tighten the locknut at the ball joint and test the
tracking (Figure 42).
6. Repeat this adjustment until the tracking is correct.
Figure 42
1. Right hand pump control
rod
2. Double nuts
Checking the Tire Pressure
Service Interval: Every 50 hours or monthly, whichever
occurs first.
3. Locknut
4. Ball joint
Check the pressure at the valve stem (Figure 43).
Maintain the air pressure in the rear tires at 13 psi (90
kPa). Uneven tire pressure can cause uneven cut. Check
the tires when they are cold to get the most accurate
pressure reading.
Note: The front tires are semi-pneumatic tires and do
not require air pressure maintenance.
Checking the Wheel Hub
Slotted Nut
Service Interval: Every 100 hours
The slotted nut needs to be torqued to 125 ft-lb
(170 N⋅m).
1. Disengage the PTO, move the motion control levers
to the neutral locked position and set the parking
brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove the cotter pin.
4. Torque the slotted nut to 125 ft-lb (170 N⋅m)
(Figure 44).
37
Figure 43
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