Pushing/Pulling The Aerator By Hand; System Control Circuit Reset; Coring Head Stranded In Lowered Position - Toro ProCore 648 Operator's Manual

Figure 29
1. Lynch pin
3. Remove locking capscrew and nut from selector
switch (Fig. 30).
Figure 30
1. Manual ground following
selector switch
4. Rotate switch to down position to turn off True Core
feature.
5. Re–install locking capscrew and nut to ensure setting
is not accidentally changed.
Pushing/Pulling the Aerator by
Hand
Important Never tow the aerator faster than 1 mph
because hydraulic damage may occur.
Pushing/pulling the Aerator
1. Set the parking brake, turn the ignition key to off and
remove the key from the ignition.
1
2
2
2. Spacers & depth pin
1
2
2. Capscrew and nut
24
2. Using a 5/8 in. wrench, rotate the by-pass valve
counterclockwise 1 turn to push/pull. This allows
hydraulic fluid to by-pass the pump enabling the
wheels to turn (Fig. 31).
1
Figure 31
1. By–pass valve
Important Do not rotate by-pass valve more than
1 turn. This prevents the valve from coming out of the
body and causing fluid to run out.
Important Do not push/pull the aerator more than
100 ft. or faster than 1 mph because hydraulic damage
may occur.
3. Disengage the parking brake before pushing/pulling.
Important
Do not operate engine with by–pass valve
open for more than 10–15 seconds.
Changing to Aerator Operation
Rotate the by-pass valve clockwise 1 turn to operate
aerator (Fig. 31).
Note: Do not over tighten the by–pass valve.
Note: The aerator will not drive unless the by-pass valve
is turned closed. Do not try to operate traction system with
by–pass open.

System Control Circuit Reset

If the coring head is ever left in the aerating position (run
out of fuel, forget to install service latch for storage,
mechanical failure of engine/pump, etc.) the electrical
system that controls the hydraulic solenoid coils and the
electric clutch is disabled to prevent unintended
movement of the coring head without the deliberate action
of resetting the system.