3.
Remove the 2 nuts securing each roller bracket
and the spacer to each side-plate mounting
flange.
4.
Lower the roller and the screws from 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
bolts (
g027270
Figure 12
1.
Side-plate mounting bolts
8.
Adjust and tighten the bolts and torque them to
37 to 45 N-m (27 to 33 ft-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 roller
and the rear roller.
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
The 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 depends 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.
g033036
Figure 13
1.
Rear spacers
3.
Aggressiveness of cut
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, Toro Part No. 106-3925); otherwise,
the after-cut appearance could be negatively affected
(
).
10
