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Checking the Tire Pressure
Check the pressure at the valve stem after every
50 operating hours or monthly, whichever occurs
first (Figure 35).
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.
Figure 35
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 36).
Figure 36
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 to ensure correct installation, and
to maintain a level deck.
4. Insert a pin punch into the mounting tube and
carefully drive out the bushings (Figure 37).
Clean the inside of the mounting tube.
Figure 37
1. Mounting Tube
5. Grease the inside and outside of the new
bushings. Use a hammer and flat plate to
31
3. Carrier frame pivot tube
4. Caster wheel
2. Bushing
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