Deck Mowing Height; Center 3-Point Link Length; Gauge Wheel Height Adjustment (Fmx Models); Wheel Interference Check (Fmx Models) - Priefert FMX Operator's Manual

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Section 2: Adjustments

Deck Mowing Height

Refer to Figure 2-3 Deck Mowing Height (applicable to RMS, RMX
and RMH
CAUTION
Wear a pair of gloves when performing this operation and
ensure the tractor is shut off and key is removed! Go to the back
of the implement and carefully rotate each blade to the position
shown in Figure 2-2. Avoid direct contact with the cutting edge
of the blade.
IMPORTANT: The blades should be positioned to cut material only at the
front of the implement. If deck is level or back of implement is lower than
the front, then the blades are subject to continuous material flow resulting in
additional blade wear, horsepower loss and frequent blade sharpening.
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 tail-wheel. If not, lengthen center link until loose. Final adjust-
ment will be made later.
3.
With gloves on, carefully rotate each blade tip to the position shown
in Figure 2-3 on page 14.
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 tail-wheel height refer to "Tail-wheel
Height Adjustment" for RMS, RMX and RMH on this page.
For FMX adjust the gauge wheel height. Refer to "Gauge Wheel
Height Adjustment on this page.
6.
Repeat Steps 1-5 until desired cutting height is achieved.
7.
Set tractor's 3-point hydraulic control stop at this height.
Center 3-Point Link Length on RMS, RMX and RMH Models
1.
Lower implement deck to the normal cutting height.
2.
Adjust length of center 3-point link so that the upper pivot hitch rests
at a slight downhill position. This arrangement allows for optimum
ground contour following performance.
3.
Lock center link in this position once correct length is achieved.
4.
The second set of holes on the upper pivot hitch should be used
when tractor's center 3-point link is too short.
Adjusting Center Point Top Length on the FMX Model
This upper link needs to be adjusted to allow for the mower to "float",
but still is able to lift the mower for transport or to avoid obstacles. This
adjustment is subjective; however, we recommend that the upper link
be adjusted out enough that when the mower is lifted above operating
16
Figure 2-3 — Deck Mowing Height
level that the gauge wheels remain on the ground for a moment before
the 3-Point eventually raises the mower into the transport position. The
second set of adjustment holes on the upper pivot hitch should be used
when tractor's center 3-point link is too short.

Gauge Wheel Height Adjustment (FMX models)

Refer to Figure 2-4.
To adjust the mowing height the spacers must be suitably placed above
and/or below the axle bushings. Achieving the professional appearance
is by combining the spacers above or below the axle bushings on all
wheels.
The spacers allow for an adjustment range from 3/4" to a maximum of
3-1/4" in 1/2" increments on the FMX500 Priefert Finishing Mower.
The adjustment range for the Priefert Finishing Mower - FMX 600 is
5-1/4" in 1/2" increments.
1.
To set the minimum cutting height: place all the spacers above the
axel bushings.
2.
To set the maximum cutting height: Place all spacers below the
axle bushings.
3.
Using the tractor's 3-point lift; raise the mower and securely lock
into position.
4.
Holding gauge wheel and yoke assembly up, remove the lock pins
from top of gauge wheel spindle.
5.
Position full-length spacers and half-length spacers as needed to
achieve the desired mowing height.
6.
Lower mower to the ground.
7.
Repeat steps 1-3 if needed. Make certain that all gauge wheels
are adjusted to the same height.
Figure 2-4—Gauge Wheel Height
Wheel Interference Check on FMX Model
Do not operate mower until this interference check has been performed.
If you change tractors, you must perform the check for that mounting.
1.
Raise mower with tractor hydraulics to maximum height of
tractor lift.
2.
Pivot both front gauge wheels forward and check that there is
clearance between gauge wheels and tractor tires.
3.
If there is interference, you must move hitch pin to extended
position. Move tractor tires inward to obtain clearance or lower
mower until clearance exists. Set 3-Point quadrant stop so
mower cannot be raised beyond set point.

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