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Drive System Maintenance; Adjusting The Tracking; Checking The Tire Pressure; Replacing The Caster Wheel Fork Bushings - Toro 30494 Operator's Manual

Commercial walk-behind mower with floating deck, t-bar, hydro with 36in, 40in, 48in or 52in turbo force cutting unit
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Drive System
Maintenance

Adjusting the Tracking

1. If the machine does not track straight, adjustment
is required.
2. Check the rear tire pressure. Refer to Checking the
Tire Pressure.
3. Loosen the wing nuts on the right control rod and
rotate the turnbuckle in or out to ensure the right
side control lever is centered in the neutral lock
position. Secure the turnbuckle in position with the
wing nuts (Figure 38).
4. Loosen the wing nuts on the left control rod and
rotate the turnbuckle in or out to change the tracking.
Secure the turnbuckle in position with the wing nuts
(Figure 38).
5. Check for proper tracking. Adjust the left control
rod if a change is needed.
Figure 38
1. Turnbuckle
2. Bottom wing nut

Checking the Tire Pressure

Service Interval: Every 50 hours
Check the pressure at the valve stem after every
50 operating hours or monthly, whichever occurs first
(Figure 39).
Maintain the air pressure in the rear tires at 12-14 psi
(83-97 kPa). Uneven tire pressure can cause an uneven
cut.
Note: The front tires are semi-pneumatic tires and do
not require air pressure maintenance.
3. Top wing nut (left hand
threaded)
Replacing the Caster Wheel
Fork Bushings
The caster wheel forks are mounted in bushings pressed
into the top and bottom of the carrier frame mounting
pivot tubes. To check the bushings, move the caster
forks back and forth and side-to-side. If a caster fork is
loose, the bushings are worn and must be replaced.
1. Raise the cutting unit so the caster wheels are off
the floor, then support the front of the mower with
jack stands.
2. Remove the locking pin and spacer(s) from the top
of the caster wheel fork (Figure 40).
1. Locking Pin
2. Spacers
3. Pull the caster wheel fork out of the mounting tube,
leaving the spacer(s) on the bottom of the fork.
Remember the location of the spacers on each fork
33
Figure 39
Figure 40
3. Carrier frame pivot tube
4. Caster wheel fork

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