Drive System Maintenance; Adjusting The Tracking; Checking The Tire Pressure; Checking The Wheel Hub Slotted Nut - Toro 74255 Operator's Manual

Drive System
Maintenance

Adjusting the Tracking

Note: Determine the left and right sides of the
machine from the normal operating position.
The right hand pump has a knob for adjusting the
tracking.
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 tracking knob.
4. Adjust the tracking as follows (Figure 48):
• To make the machine go right, turn the
knob towards the right side of the machine.
• To make the machine go left, turn the knob
towards the left side of the machine.
Figure 48
1. Pump rod
2. Turn this way to track left
5. Repeat this adjustment until the tracking is
correct.
3. Tracking knob
4. Turn this way to track right

Checking the Tire Pressure

Check the pressure at the valve stem after every
50 operating hours or monthly, whichever occurs
first (Figure 49).
Maintain the air pressure in the front and 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.
Figure 49
Checking the Wheel Hub
Slotted Nut
Check after every 500 operating 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 50).
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