Toro ProCore 648 Operator's Manual page 46

PROBLEM
Turf lifting/tearing while aerating
Front of the hole is dimpled or
pushed.
POSSIBLE CAUSES
1. Check coring head attitude
2. Improper tine selection.
3. Excessive depth.
4. Hole spacing too close.
5. Turf conditions (i.e. root
structure insufficient to resist
damage.
1. Roto–Link in the "soft" position.
46
CORRECTIVE ACTION
1. Refer to the Service Manual for
specification.
2. Reduce the tine diameter,
reduce the tine diameter,
reduce the number of tines per
head or increase the hole
spacing.
3. Reduce the depth.
4. Increase the hole spacing.
5. Alter the aeration methods or
timing.
1. See operating tips on page 27.