Height-Of-Cut Chart Terms - Toro 03698 Operator's Manual

2. Raise the rear of the cutting unit and place a block
under the bedknife.
3. Remove the 2 nuts securing each roller bracket and
spacer to each side-plate mounting flange.
4. Lower the roller and screws from the side-plate
mounting flanges and spacers.
5. Place the spacers onto the screws on the roller brackets.
6. Secure the roller bracket and spacers to the underside
of the side-plate mounting flanges with the nuts
previously removed.
7. Verify that the bedknife-to-reel contact is correct. Tip
the mower to expose the front and rear rollers and the
bedknife.
Note: The position of the rear roller to the reel
is controlled by the machining tolerances of the
assembled components and paralleling is not required.
A limited amount of adjustment is possible by setting
the cutting unit on a surface plate and loosening the
side-plate mounting cap screws
Figure 21
1. Side-plate mounting cap screws
8. Adjust and tighten the cap screws and torque the cap
screws to 27 to 36 N∙m (240 to 320 in-lb).

Height-of-Cut Chart Terms

Height-of-Cut Setting (HOC)
This corresponds to the desired height of cut.
Bench Set Height of Cut
The bench set height of cut is the height at which the top
edge of the bedknife is set above a flat level surface that
contacts the bottom of both the front and rear roller.
(Figure 21).
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Effective Height of Cut
This is the actual height that the grass has been cut. For a
given bench set height of cut, the actual height of cut will
vary depending on the type of grass, time of year, turf, and
soil conditions. The cutting unit setup (aggressiveness of cut,
rollers, bedknives, attachments installed, turf compensation
settings, etc.) will also affect the effective height of cut. Check
the effective height of cut using the Turf Evaluator (Model
04399) regularly to determine the desired bench set height
of cut.
Aggressiveness of Cut
Aggressiveness of cut has a significant impact on the
performance of the cutting unit. Aggressiveness of cut refers
to the angle of the bedknife relative to the ground
The best cutting unit setup is dependent on your turf
conditions and desired results. Experience with the cutting
unit on your turf will determine the best setting to use.
Aggressiveness of cut may be adjusted throughout the cutting
season to allow for various turf conditions.
In general, less to normal aggressive settings are more
appropriate for warm-season grasses (Bermuda, paspalum,
zoysia) while cool-season grasses (bent, bluegrass, rye) may
require normal to more aggressive setups. More aggressive
setups cut more grass off by allowing the spinning reel to pull
more grass up into the bedknife.
Figure 22
1. Rear spacers
2. Side-plate mounting flange
Rear Spacers
The number of rear spacers determines the aggressiveness
of cut for the cutting unit. For a given height of cut, adding
spacers, below the side-plate mounting flange, increases the
aggressiveness of the cutting unit. All cutting units on a
given machine must be set to the same aggressiveness of cut
(number of rear spacers, Part No. 119-0626), otherwise the
after-cut appearance could be negatively affected
(Figure
3. Aggressiveness of cut
(Figure 22).
22).