Operator's Manual

41
Replacing the Turf Guards
All turf guards should be replaced if broken or worn to
less than 1/4 inch thickness. Broken turf guards can catch
and tear turf creating undesirable damage.
1
Figure 59
1. Turf guard
Thin turf guards can cause the True Core ground
following system to be off from the desired depth setting
due to both wear and the loss of stiffness.
Adjusting Hole Spacing
The hole spacing of the ProCore 648 is determined by the
ground speed the traction system is set to maintain. The
hole spacing is set to within 1/8” of the nominal setting at
the factory.
In the event the hole spacing is off from the nominal
setting more than desired, proceed as follows:.
1. Unlatch and remove the belt cover (Fig. 56).
2. Remove the (2) pump shield mounting nuts and
remove shield (Fig. 57).
3. In an open space that is free to aerate (i.e. sample
plot), set hole spacing lever to desired hole spacing
and make an aeration pass of at least 15 feet.
4. Measure the distance between several holes and divide
by the number of holes measured to get your average
hole spacing.
Example: Nominal Hole Spacing Setting of 2 inches
21.2 divided by 10 is 2.12, hole spacing is long by .12
inch from nominal (Fig. 60).
21.2 inches (10 holes)
Figure 60
18.8 divided by 10 is 1.88, hole spacing is short by .12
inch from nominal (Fig. 61).
18.8 inches (10 holes)
Figure 61
5. If an adjustment is needed, turn the pump stop bolt
(Fig. 62) closer to the stop plate to decrease hole
spacing or turn stop bolt away from stop plate to
increase hole spacing.
1
Figure 62
1. Pump stop bolt
6. Repeat steps 3–5 until spacing is at the nominal
setting.
Note: One complete turn of the stop bolt, adjusts the hole
spacing approximately 5/8 inch.