Longer/Larger Tines; Multi Row Adapter Heads; Root Zone Lifting; Adjusting The Tine Angle - Toro ProCore SR54 Operator's Manual

Aeration of soil types built on top of hard sub soils
(i.e. sand/soil cap placed over rocky ground) can
cause undesired hole quality. This is caused when the
aeration depth is greater than the soil cap and the sub
soil is too hard to penetrate. When the tines contact
this sub soil the aerator may lift and cause the top of
the holes to become elongated. Reduce the aeration
depth sufficiently to avoid penetration into the hard
sub soil.

Longer/Larger Tines

25 cm (10 inches) or More
Using longer/larger tines can leave the front or rear
of the hole tufted or slightly deformed. Hole quality
for this configuration generally improves if the coring
head speed is reduced 10 to 15% from full operating
speed. For PTO powered aerators reduce the engine
speed until the PTO speed is around 400 to 420 rpm.
The forward spacing is not affected by reducing the
engine speed. The pushed hole can also be affected
by the position of the camber bracket. Refer to
Adjusting the Tine Angle (page

Multi Row Adapter Heads

When using multi-row adapter heads, reduce the
engine speed until the PTO speed is around 400
to 420 rpm. The forward spacing is not affected by
reducing the engine speed.

Root Zone Lifting

Using multi-tine heads in conjunction with larger
coring tines or large diameter solid tines can induce
significant stress on the root zone of the turf. This
stress can fracture the root zone and cause a lifting
action to the turf. If this damage occurs try one or
more of the following:
•
Reduce tine density (remove some of the tines)
•
Decrease coring depth (suggested in 1/2 inch
increments)
•
Increase forward hole spacing (change tractor
transmission up one gear)
•
Decrease the tine diameter (solid or coring)

Adjusting the Tine Angle

Model SR72
Set the camber bracket
position based on the length of tines to be used.
The head stop is set to one of five predetermined
positions by choosing the hole through which the
adjustment rod is bolted. These holes are presets
25).
(Figure 38) to the correct
only; for instance, by using a 10-inch tine in the
12-inch position you may achieve a smoother finish;
depending on the application.
1. Disengage the PTO and engage the parking
brake.
2. Shut off the engine and remove the key.
3. Release the spring tension to the tine head
(Figure 38).
4. Remove the nut and bolt in the adjustment holes
in the camber bracket
1. Camber bracket
2. 16-inch tine
3. 12-inch tine
4. 7-inch tine
5. Rotate the camber bracket until it is aligned with
the desired hole in the arm and install the bolt
and nut.
Note:
Make sure that the bolt goes through the
camber bracket and plate.
6. Connect the spring tension to the tine head.
Models SR54, SR54-S, SR70 and
SR70-S
Set the tine angle according to the tine length by
using one of the two adjustment holes in the linkage
arm. These holes are presets only. When using
17.77 cm (7-inch) to 25.4 cm (10-inch) tines, the head
bumper should be positioned closest to the rear of
the tine head. The other position (the hole farthest
from the head) may be needed due to variances of
soil conditions.
1. Disengage the PTO and engage the parking
brake.
2. Shut off the engine and remove the key from
ignition switch.
25
(Figure 38).
Figure 38
5. 10-inch tine
6. 14-inch tine
7. Tine head pivot bolt
8. Spring
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