Toro ProCore 648s Operator's Manual page 59

•
Replace broken tines and inspect and correct
damage to those still usable. Repair any other
machine damage before commencing operation.
•
When aerating with less than the full width of
the machine, you may remove tines, but the tine
heads should remain installed on the stomper
arms to ensure proper balance and operation of
the machine.
•
This machine aerates deeper than most greens
aerators. On native or modified push-up greens
and tees, the deeper depth and longer hollow tines
may have difficulty ejecting the complete core.
This is due to harder native soil that sticks in the
end of the tine. Side-eject greens/tees tines from
the manufacturer stay cleaner and reduce the time
required to clean the tines out. You will eventually
eliminate this condition with continued aeration
and top-dressing programs.
Hard Ground
If the ground is too firm to obtain the desired coring
depth, the coring head can get into a bouncing rhythm.
This is due to the hard pan the tines are attempting to
penetrate. Correct this condition by attempting the
following:
•
Do not aerate if ground is too hard or dry. You
obtain best aeration results after a rain or watering
the turf the previous day.
•
Change to a 3-tine head, if attempting to use the
4-tine head or reduce the number of tines per
stomper arm. Attempt to maintain a symmetrical
tine configuration to evenly load the stomper arms.
•
If ground is hard packed, reduce aerator
penetration (depth setting), clean up the cores,
water the turf, and re-aerate at a deeper
penetration.
Aeration of soil types built on top of hard subsoils (i.e.,
soil/sand placed over rocky soil) can cause undesired
hole quality. This occurs when the aeration depth is
greater than the built up soil and the subsoil is too
hard to penetrate. When the tines contact this harder
subsoil, the aerator may lift and cause the top of the
holes to become elongated. Reduce the aerating
depth sufficiently to avoid penetration into the hard
subsoil.
Entrance Hole Quality
The entrance hole quality is deteriorating when the
hole is slotted (pulled forward).
If the hole entrance quality is deteriorating, check the
tine ground-height calibration, refer to
Tine Ground-Height Calibration (page
Mini Tine (Quad Tine)
Because of the double row design, the mini-tine coring
head requires the hole spacing to be set at 6.3 cm
(2-1/2 inches). Ground speed is critical to maintain
the appearance of 3.2 cm (1-1/4 inches) hole spacing.
Refer to
hole spacing requires a small change.
With the mini tine head or larger solid tine use, the turf
root structure is important to preventing turf damage
due to tearing of the root zone. If the center 2 arms
begin to lift the turf or damage to the root zone is
excessive, proceed as follows:
•
•
•
•
The lifting action that solid a tine creates when it pulls
from the turf may cause turf damage. This lift can
tear the root zone if the density of tines or diameter
of tines is too high.
Front Hole Dimple or Push During
the Aeration Pass (Solid Tines or
Softer Soil Conditions)
When aerating with longer solid tines (i.e., 3/8 x 4
inches long) or needle type tines, the front of the holes
may become slotted or tufted. To regain excellent
hole quality for this configuration, try the following:
•
•
If slowing the engine speed does improve hole quality
for the longer solid or needle type tines, adjust the
roto-link damper.
Note:
works best.
•
•
Note:
Checking the
damper if you change back to a coring style tine or
51).
any of the mini-tines.
59
Setting the Hole Spacing (page 33)
Increase the hole spacing
Decrease tine size
Decrease tine depth
Remove some of the tines
Calibrate the tine ground height; refer to
the Tine Ground Height (page
Slow the engine high idle speed down to 2800 to
2900 rpm.
Note:
Because traction and coring head speeds
increase and decrease together with engine
speed, hole spacing is not affected.
Under most conditions, the factory setting
If the front of the holes is slotted or tufted, a
stiffer roto-link setting helps resist hole-push and
improve hole quality.
If the back of the holes is slotted or tufted, a softer
roto-link setting helps improve the hole quality.
You must reverse the position of the roto-Link
if your
Calibrating
36).