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2.
Turn the cutting unit over (90°) and rest it on the
rear roller and top rear tabs. Loosen the locknuts
on the capscrews that retain the rear roller brack-
ets.
3.
On a gauge bar (Part no. 13-8199), set the head
the screw to the desired height of cut. This mea-
surement is from the bar face to the underside of
the screw head.
4.
Place the bar across the front and rear rollers and
adjust the height-of-cut knob until the underside
of the screw head engages the bedknife cutting
edge.
IMPORTANT: Repeat the procedure on each end
of the bedknife and tighten locknuts that retain
rear roller brackets on each end.
NOTE: Cutting units will deliver differing effective
heights of cut, depending on their configuration.In
fact, effective cutting height may be influenced by the
following factors; turf conditions, roller profiles, cut-
ting unit attitude, cutting unit accessories, weight of
the cutting units and bedknife profile. Therefore,
bench setting a cutting unit does not equal the effec-
tive (actual) height of cut you achieve. You must
determine how to adjust your cutter on the bench to
achieve a comparable height of cut to a cutting unit of
a different configuration, model, or brand.
Cutting Unit Characteristics
The single-knob bedknife-to-reel adjustment system
incorporated in this cutting unit simplifies the adjust-
ment procedure needed to deliver optimum mowing
performance. The precise adjustment possible with
the single knob/bedbar design gives the necessary
control to provide a continual self-sharpening action,
thus maintaining sharp cutting edges, assuring good
quality of cut, and greatly reducing the need for rou-
tine backlapping.
Cutting Unit Daily Adjustments
Prior to each day's mowing, or as required, each cut-
ting unit must be checked to verify proper bedknife-
to-reel contact. This must be performed even
though quality of cut is acceptable.
1.
Lower the cutting units onto a hard surface, shut
of the engine and remove the key from the igni-
tion.
2.
Slowly rotate the reel in reverse direction, listen-
ing for reel-to-bedknife contact. If no contact is
evident, turn the bedknife adjusting knob clock-
wise, one click at a time, until light contact is
felt and heard.
3.
If excessive contact is felt, turn the bedknife
adjusting knob counterclockwise, one click at a
time until no contact is evident. Then turn the
bedknife adjusting knob one click at a time
clockwise,until light contact is felt and heard.
IMPORTANT: Light contact is preferred at all
times. If light contact is not maintained, bedknife /
reel edges will not sufficiently self-sharpen and
dull cutting edges will result after a period of oper-
ation. If excessive contact is maintained, bed-
knife/reel wear will accelerate, uneven wear can
result, and quality of cut may be adversely affect-
ed.
Note: As the reel blades continue to run against the
bedknife, a slight burr will appear on the front cutting
edge surface the full length of the bedknife. Running
a file across the front edge to remove this burr will
improve cutting.
After extended running, a ridge will eventually devel-
op at both ends of the bedknife. These notches must
be rounded off or filed flush with the cutting edge of
the bedknife to assure smooth operation.
6
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