Adjusting The Tine Depth; Adjusting The Head Return Springs - Toro ProCore SR54 Operator's Manual

3. Release the spring tension to the tine head
(Figure 39).
Figure 39
1. Spring
2. Bumper bolt
4. Remove the bumper bolt and bumper from the
linkage arm and reinsert them into the other
adjustment hole (Figure
5. Connect the spring tension to the tine head.

Adjusting the Tine Depth

Models SR54-S and SR70-S
You can change the tine depth by raising or lowering
the rear roller. You can adjust the roller height by
moving the roller adjusting bolts to the desired
position.
Note:
The aerator is shipped in Position A.
Figure 40
•
Position A - Maximum depth
•
Position B - Depth is decreased 38 mm (1-1/2
inches) from Position A
•
Position C - Depth is decreased 76 mm (3 inches)
from Position A
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3. Spring pin and clip
39).
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Models SR54, SR70, and SR72
Start the tractor engine and operate the tractor spool
valve to check the extend and retract motion of the
hydraulic top link.
Note:
Reverse the hose connections, at the tractor, if
they do not agree with the tractor control operation.
The letters on the decal do not correspond to a
particular depth. Run the aerator on a test plot
to determine the desired setting and note the
corresponding position on the depth indicator. You
then can adjust the cylinder while in operation to a
deeper setting "J" or shallower setting "A" as desired.
Note:
Extending the cylinder makes the aerator
penetrate deeper.
1. Aerator hitch pin
2. Hydraulic top link
3. Rotational block
4. Connecting link
5. 3 inch extension block
6. 5 inch extension block
Adjusting the Head Return
Springs
You can adjust the head return springs to increase or
decrease the tension. Moving the spring toward the
front of the aerator increases the spring tension, thus
increasing the distance between the spring mounting
posts.
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 linkage arm.
26
Figure 41
7. Tractor link pin
8. Clevis and lynch pin
9. 2-1/2 foot hydraulic hose
10. 3-1/2 foot hydraulic hose
11. Hose quick couplings
12. Tractor hydraulic ports
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