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Section 3: Adjustments
RCD1884 Rotary Cutters 326-355M
12/15/15
Table of Contents
Deck Leveling & Cutting Height
There are 4 primary adjustments that should be made
prior to actual field operation:
• Deck Leveling From Left to Right
• Deck Cutting Height
• Center 3-Point Link Adjustment
• Tailwheel Height Adjustment
Proper adjustment of each of these items will provide for
higher efficiency, improved cutting performance, and
longer blade life. The following tools will be needed:
• Pliable tape measure
• Spirit or carpenters level
• Set of wrenches and/or socket wrench set
• Protective gloves
!
WARNING
Always disengage PTO, put tractor in park or set park brake,
shut tractor engine off, remove ignition key, and wait for all
moving parts to stop before dismounting from tractor.
Deck Leveling From Left to Right
Refer to Figure 3-2 on page 19:
1. Locate tractor with Rotary Cutter on a flat, level
surface.
2. Use tractor’s hydraulic 3-Point control lever to lower
cutter until tailwheel makes contact with ground
surface.
3. Place a level on the cutter deck as shown. Manually
adjust one or both lower 3-Point lift arms until deck is
level from left to right. On some tractors, only one arm
can be adjusted vertically.
Section 3: Adjustments
Cutting Height
Figure 3-1
Set Front Blade Tip
At Cutting Height
Blade Tip
Blade Tip
Set Rear Blade Tip Slightly Higher
Than Cutting Height (Max. 1" Higher
30967
Deck Cutting Height
Refer to Figure 3-1:
!
CAUTION
Avoid direct contact with cutter blades by wearing a pair of
gloves. Cutter blades have sharp edges and burrs that can
cause injuries.
1. With gloves on hands, carefully rotate each blade tip
to the position shown in Figure 3-1.
2. Measure distance from cutting tip of front blade to
ground surface. This distance is the cutting height.
3. Using tractor’s 3-Point hydraulic control, raise or
lower the 3-Point arms until the front blade tip is at
the desired cutting height.
4.
The top center link should be loose when deck rear is
supported by the tailwheel. If not, lengthen center
link until loose. Final adjustment will be made later.
5. Measure distance from cutting tip of rear blade to
ground. This distance should be slightly higher than
the front blade but not more than 1" higher.
6. If rear blade is lower than the front blade or is more
than 1" higher than the front blade, then the tailwheel
height must be adjusted. If needed, see “Tailwheel
Height Adjustment” instructions below.
7. Repeat steps 1 through 6 until tailwheel and 3-Point
arms are adjusted to the desired cutting height.
8. Set tractor’s 3-Point hydraulic control stop once the
tailwheel and 3-Point arms are adjusted properly.
IMPORTANT: The front blade tip should be lower
than rear blade tip by approximately 1". The cutter is
subject to continuous material flow under the deck if
the rear blade is at the same height or lower than the
front blade causing horsepower loss, grass clumps,
blade wear, and frequent blade sharpening.