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Maintain the air pressure in the front and rear
tires. The correct air pressure is 15 psi (103 kPa)
in the rear tires and 25 psi (172 kPa) in the caster
wheels. Uneven tire pressure can cause uneven
cut. Check the tires when they are cold to get the
most accurate pressure reading.
Figure 51
Replacing the Castor Wheels
and Bearings
1. Obtain a new caster wheel assembly, cone
bearings, and bearing seals for your Authorized
Toro Distributor.
2. Remove the locknut from the bolt holding the
castor wheel assembly between the castor fork
(Figure 52).
Figure 52
1. Nut
2. Bearing spacer
3. Outer bearing seal
4. Cone bearing
5. Inner bearing seal
6. Spacer
7. Caster wheel
8. Axle bolt
9. Caster fork
3. Grasp the castor wheel and slide the bolt out
of the fork or pivot arm.
4. Discard the old caster wheel and bearings.
5. Assemble the castor wheel by pushing the cone
bearings and seals, packed with grease, into the
wheel hub, positioned as shown in Figure 52.
6. Slide the spacer into the wheel hub through
the bearings, captivating the spacer inside the
wheel hub with 2 bearing spacers.
Important: Ensure that the seal lips are
not folded in.
7. Install the castor wheel assembly between the
castor fork and secure it in place with the bolt
and locknut.
8. Tighten the nut until the wheel no longer spins
freely, then back it off just until the wheel spins
freely.
9. Attach a grease gun to the grease fitting on
the caster wheel and fill it with No. 2 General
Purpose Lithium Base Grease.
Cooling System
Maintenance
Discharge of hot pressurized coolant or
touching hot radiator and surrounding parts
can cause severe burns.
• Do not remove the radiator cap when
the engine is hot. Always allow the
engine to cool at least 15 minutes or
until the radiator cap is cool enough to
touch without burning your hand before
removing the radiator cap.
• Do not touch radiator and surrounding
parts that are hot.
53
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