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Mounting the Cutting Unit to
the Traction Unit
1. Position the machine on a level surface and shut the
engine off.
2. Move the cutting unit into position in front of the
traction unit.
WARNING
The right-hand push arm is spring loaded to
about 45 kg (100 lb.) and the left-hand push
arm is spring loaded to about 68 kg (150 lb.).
Sudden release of the push arm could cause
injury.
Another person is needed to push the arm
down during this procedure.
3. Have another person carefully push down on the right
push arm until the holes in the ball joint mount line up
with the holes in the castor arm (Figure 22).
4. Secure the ball joint mount to the castor arm with the
capscrews, flat washers, and flange nuts. Position the
flat washers to the outside of the castor arm.
5. Have another person carefully push down on the
left push arm until the holes in the ball joint mount
line up with the holes in the castor arm (Figure 23).
Immediately slide a 4 x 4 inch block of wood between
the top of the push arm and the underside of the
chassis.
WARNING
Sudden release of the push arm could cause
injury.
Make sure that the wooden block does not
slip out.
6. Secure the ball joint mount and chain bracket to the
castor arm with the capscrews, flat washers, and flange
nuts. Position the flat washers to the outside of the
castor arm. Mount the chain bracket in the forward
set of holes.
7. Carefully remove the wood block holding the push
arm down.
8. Line up the holes in the yoke and input shaft of the
gear box. Slide the yoke onto the shaft and secure them
together with a roll pin, 2 capscrews (5/16 x 1-3/4
inches), and 2 locknuts (5/16 inches).
Replacing the Blade Drive
Belts
1. Lower the cutting unit to the shop floor, shut off the
engine and engage the parking brake.
2. Remove the covers from the top of the cutting unit
and set the covers aside.
3. Loosen idler pulleys to the release tension of the belts
(Figure 24).
4. Remove the carriage bolts, lock washers and nuts
holding the gear box in place. Lift the gear box off the
mounting plate and lay it on top of the cutting unit
(Figure 24).
1
1. Lower belt idler
5. Remove the belts from the spindle pulleys.
6. Mount a belt on the lower pulley groove of the left
spindle, slide the belt under the belt idler mount plate,
and install it around the center spindle pulley.
7. Tension the belt by levering the idler pulley against the
belt and tighten the idler pulley flange nut (Figure 24).
8. Place the right spindle belt under the gear box mount
plate and the opposite end on top of the right spindle
pulley. Place the left spindle belt under the gear box
mount plate and the opposite end on top of the left
spindle pulley. Mount the gear box and loop the belts
around the gear box pulley.
9. Feed the right and left spindle belts over the pulleys
by rotating the cutter blades. Tighten the gear box
mounting fasteners.
10. Tension the idler pulleys against both belts.
11. Install the covers to the top of the cutting unit.
Servicing the Bushings in the
Castor Arms
The castor arms have bushings pressed into the top and
bottom of the tube and after many hours of operation, the
bushings will wear. To check the bushings, move the castor
fork back and forth and from side to side. If the castor
spindle is loose inside the bushings, the bushings are worn
and must be replaced.
1. Raise the cutting unit so that the wheels are off of
the floor. Block the cutting unit so that it cannot
accidentally fall.
19
2
Figure 24
2. Flange nut
G021323
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