the castor pivot arm. Grasp the castor wheel and slide
the bolt out of the fork or pivot arm.
Figure 98
1.
Castor wheel
3.
Bearing
2.
Castor fork
4.
Bearing spacer
2.
Remove the bearing from the wheel hub and allow
the bearing spacer to fall out (
). Remove the
bearing from the opposite side of the wheel hub.
3.
Check the bearings, spacer, and inside of the wheel hub
for wear. Replace any damaged parts.
4.
To assemble the castor wheel, push the bearing into the
wheel hub. When installing the bearings, press on the
outer race of the bearing.
5.
Slide the bearing spacer into the wheel hub. Push the
other bearing into the open end of the wheel hub to
captivate the bearing spacer inside the wheel hub.
6.
Install the castor wheel assembly between the castor
fork and secure it in place with the bolt and locknut.
Blade Maintenance
Checking for a Bent Blade
After striking a foreign object, inspect the machine for
damage and make repairs before restarting and operating the
equipment. Torque all the spindle pulley nuts to 176 to 203
N
⋅
m (130 to 150 ft-lb).
1.
Position the machine on a level surface. Raise the
cutting unit, engage the parking brake, put the traction
pedal in neutral, make sure the PTO switch is in the Off
position, stop the engine, and remove the ignition key.
Block the cutting unit to prevent it from accidentally
falling.
2.
Rotate the blade until the ends face forward and
backward (
). Measure from the inside of
the cutting unit to the cutting edge at the front of the
blade. Record this dimension.
Figure 99
3.
Rotate the opposite end of the blade forward. Measure
between the cutting unit and cutting edge of the blade
at the same position as in step
. The difference
between the dimensions obtained in steps
and
must not exceed 3 mm (1/8 inch). If the dimension
exceeds 3 mm (1/8 inch), the blade is bent and must be
replaced; refer to Removing and Installing the Cutter
Blade.
Removing and Installing the
Cutter Blade(s)
The blade must be replaced if a solid object is hit, the blade
is out of balance, or if the blade is bent. Always use genuine
Toro replacement blades to be sure of safety and optimum
performance. Never use replacement blades made by other
manufacturers because they could be dangerous.
1.
Raise the cutting unit to the highest position, engage
the parking brake, stop the engine, and remove the
ignition key. Block the cutting unit to prevent it from
accidentally falling.
2.
Grasp the end of the blade using a rag or thickly
padded glove. Remove the blade bolt, anti-scalp cup,
and blade from the spindle shaft (
3.
Install the blade, anti-scalp cup, and blade bolt. Tighten
the blade bolt to 115 to 149 N
⋅
m (85 to 110 ft-lb).
Important:
The curved part of the blade must be
pointing toward the inside of the cutting unit to
ensure proper cutting.
60
