Height-Of-Cut Chart Terms - Toro 03621 Original Instructions Manual

Height-of-Cut Chart Terms

Height-of-Cut Setting (HOC)
This corresponds to the desired height of cut.
Bench-Set Height of Cut
This 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 rollers.
Effective Height of Cut
This is the actual height 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
Cutting unit 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
(Figure 13).
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. You
can adjust the aggressiveness of cut 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 13
1. Rear spacers
2. Side-plate mounting flange
3. Aggressiveness of cut
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, Toro Part No. 119-0626); otherwise,
the after-cut appearance could be negatively affected
13).
Chain Links
The location at which the lift-arm chain is attached determines
the pitch angle of the rear roller
1. Lift chain
2. U-Bracket
Groomer
These are the recommended height of cut settings when a
groomer kit is installed on the cutting unit.
9
(Figure 14).
Figure 14
3. Bottom hole
(Figure