15
Section 2: Adjustments
1/29/14
RCR2684 Rotary Cutter 312-785M
Table of Contents
Cutting Height
Figure 2-2
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Front
Blade
Rear
Blade
For best cutting efficiency, adjust lower
3-Point arm height such that the front
cutter blade is approximately 1" lower
than the rear cutter blade.
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 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
Figure 2-1
Deck Leveling From Left to Right
Refer to Figure 2-1:
1.
Locate tractor and 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
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adjustments to level the deck from left to right. Some
tractors have only a single adjusting crank.
4.
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.
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 2-2:
3.
With gloves on, carefully rotate each blade tip to the
position shown in Figure 2-2 on page 15.
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 pages 16 and 16.
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.
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.