18
Section 2: Adjustments
RCR1884 Series Rotary Cutter 312-880M
2/03/12
Table of Contents
Section 2: Adjustments
Deck Leveling & Height Adjustments
There are 4 primary adjustments that should be made
prior to actual field operations:
•
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
•
Carpenters level
•
3/4" 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 2-1:
1.
Locate tractor and Rotary Cutter on a flat, level
surface.
2.
Use tractor’s hydraulic 3-point control to lower cutter
until tailwheel contacts ground surface.
3.
Place a Carpenters level or other suitable leveling
device on the front of the cutter deck. Adjust either one
or both of the tractors 3-point lower link height
adjustments to level the deck from left to right. Some
tractors have only a single adjusting crank.
Deck Leveling From Front to Rear
!
CAUTION
Avoid direct contact with cutter blades by wearing a pair of
gloves. Cutter blades have sharp edges and burrs that can
cause injuries.
Refer to Figure 2-1:
1.
Place a Carpenters level on one of the main deck
channels. Using the tractor’s 3-point hydraulic
control lever, raise or lower the 3-point arms until the
deck is slightly lower at the front (approximately 1"
lower) than at the back.
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.
Deck Leveling
Figure 2-1
2.
The top center link should be loose when deck rear is
supported by the tail wheel. If not, lengthen center
link until loose. Final adjustment will be made later.
Refer to Figure 2-5 on page 19:
3.
With gloves on, carefully rotate each blade to the
position shown in Figure 2-5 on page 19.
4.
At the front of the cutter, measure the distance from
blade cutting tip to ground surface. This distance is
known as the “Nominal Cutting Height”.
5.
The tail wheel will need adjusting if nominal cutting
height is not at the preferred cutting height. Adjust
tailwheel per instructions on page 19.
6.
Repeat steps 1 to 5 until preferred cutting height is
achieved.
7.
Set stop on tractor lift quadrant so cutter can be
returned to the same height.
Center 3-Point Link Adjustment
Refer to Figure 2-2:
1.
Lower cutter deck to the nominal cutting height.
2.
Adjust length of tractor’s 3-point top center link such
that the top and bottom hitch pins are aligned
vertically with each other.
3.
Lock center link in this position.
Top Link Adjustment
Figure 2-2
13831
24661
Vertical
Alignment of
Hitch Pins
