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10 Operation
MAN0260 (8/6/2004)
Tractor Top Link Adjustment
When the cutting height is set, adjust tractor top link
until mower top link attachment point (A), Figure 4, is
aligned vertically with mower hitch pin (B). The front
tires of the mower will lift off the ground before the rear
tires when the unit is raised. This will allow the mower
to follow the ground contour.
Figure 4. Top Link Adjustment
RDC54 Only
The RDC54 has two mower hitch plate attachment
points (D). It may be necessary to change the mower
hitch plate attachment point to obtain proper tire clear-
ance and/or lift height.
Front Caster Wheel Interference Check
IMPORTANT
■ Do not operate tractor and mower until this
interference check has been performed. If you
change tractors, you must perform the check for
that mounting.
Perform this check with all of the spacers and springs
above the caster wheel arm. This will place the caster
wheels in their highest position and provide the lowest
cutting height for the mower.
1. Raise mower with tractor hydraulics to 16" at
dimension C, Figure 5, or maximum height of
tractor lift, whichever is less.
2. Pivot both front caster wheels forward and check
that there is clearance between caster wheels and
tractor tires.
Figure 5. Front Caster Wheel Interference Check
Front Roller (Optional)
The caster wheels effectively reduce scalping in most
cases. However, you may encounter areas where the
caster wheels and/or side skids drop into depressions
and allow center of the mower to contact ground and
scalp. An optional front roller may be installed to mini-
mize scalping. See page 40.
Operating Technique
Stop power unit and implement immediately
upon striking an obstruction. Dismount power unit,
using proper procedure. Inspect and repair any
damage before resuming operation.
Power for operating the mower is supplied by the trac-
tor PTO. Operate PTO at 540 rpm. Know how to stop
tractor and mower quickly in an emergency.
If mower becomes plugged causing belt to slip for over
two seconds, follow these steps:
1. Maneuver equipment into a previously cut area
and allow mower to clear accumulated material.
2. Continue running at least two minutes, allowing
pulleys to cool. Stopping the mower when in
contact with a very hot pulley will bake and ruin
belt.
Proper ground speed will depend upon the terrain, the
height, and type and density of material to be cut.
Normally, ground speed will range from 2 to 5 mph. Tall
dense material should be cut at a low speed; thin
medium-height material can be cut at a faster ground
speed.
Always operate tractor PTO at 540 rpm to maintain
proper blade speed and produce a clean cut.
C
A
B
D
E
A. Mower top link attachment point
B. Mower hitch pin
C. Tractor top link
D. Mower hitch plate attachment point
(RDC54 only)
C
CD3528C
CAUTION