15
Section 3: Adjustments
2/03/12
RCR1860 and RCR1872 Series Rotary Cutters 312-849M
Table of Contents
Section 3: Adjustments
Cutting Height
Figure 3-2
Cutting Height
21424
Blade Tip
Blade Tip
This End Should Be Slightly
Higher Than Cutting Height
Deck Leveling & Height Adjustments
There are 4 primary adjustments that should be made
prior to actual field operation:
•
Deck Leveling From Left to Right
•
Deck Leveling From Front to Rear
•
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
•
Open end or hex end wrench or socket set
•
Protective gloves
!
WARNING
Always disengage PTO, engage parking brake, shut off
tractor, remove ignition key, and wait for all moving parts to
come to a complete stop before dismounting from tractor.
Deck Leveling From Left to Right
Refer to Figure 3-1:
1.
Locate tractor with Rotary Cutter on a flat, level
surface.
2.
Use tractor’s hydraulic 3-point control lever to lower
cutter until the tailwheel makes contact with the
ground surface.
3.
Place a level or another suitable leveling device on
the front of the cutter deck as shown in Figure 3-1.
Manually adjust either one or both of the tractor’s
lower 3-point arm height adjustments to level the
deck from left to right. Some tractors have only a
single adjusting crank.
Deck Leveling
Figure 3-1
Deck Leveling From Front to Rear
Refer to Figure 3-2:
!
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.
Using tractor’s 3-point hydraulic control, raise or
lower the 3-point arms until the front of the deck is
slightly lower than the rear of the deck.
2.
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.
3.
With gloves on, carefully rotate each blade tip to the
position shown in Figure 3-2.
4.
Measure distance from cutting tip of blade to ground
surface. This distance is the cutting height.
5.
If desired cutting height cannot be obtained by
adjusting the lower 3-point arms, then readjust
tailwheel height as instructed on page 16.
6.
Repeat steps 1 to 5 until desired cutting height is
achieved.
7.
Set tractor’s 3-point hydraulic control stop at this
height.
21425
IMPORTANT: The front blade tip should be lower
than the rear blade tip. If front and rear blades are
the same height or if rear blade is lower, then the
cutter is subject to continuous material flow under
the deck resulting in horsepower loss, grass clumps,
high blade wear, and frequent blade sharpening.
