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4. Insert a pin punch into the top or bottom of the
mounting tube and drive the bushing out of the tube
(Fig. 80). Also drive the other bushing out of the tube.
Clean the inside of the tubes to remove dirt.
1
Figure 80
1. Castor arm tube
5. Apply grease to the inside and outside of the new
bushings. Using a hammer and flat plate, drive the
bushings into the mounting tube.
6. Inspect the castor spindle for wear and replace it if it is
damaged.
7. Push the castor spindle through the bushings and
mounting tube. Slide the thrust washer and spacer(s)
onto the spindle. Install the tensioning cap on the castor
spindle to retain all parts in place.
8. Grease the spindle assembly.
Servicing the Castor Wheels
and Bearings
1. Remove the locknut from the capscrew holding the
castor wheel assembly between the castor fork (Fig. 81)
or the castor pivot arm (Fig. 82). Grasp the castor wheel
and slide the capscrew out of the fork or pivot arm.
2. Remove the bearing from the wheel hub and allow the
bearing spacer to fall out (Fig. 81 and 82). 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 capscrew and
locknut.
2
2. Bushings
50
1
3
4
Figure 81
1. Castor wheel
2. Castor fork
2
3
4
1
Figure 82
1. Castor wheel
2. Castor pivot arm
Checking for a Bent Blade
1. Position the machine on a level surface. Raise the
cutting unit, engage the parking brake, put the traction
pedal in neutral, put the PTO lever 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 (Fig. 83). Measure from the inside of the
cutting unit to the cutting edge at the front of the blade.
Remember this dimension.
Figure 83
2
3. Bearing (2)
4. Bearing spacer
3
3. Bearing (2)
4. Bearing spacer
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