Adjusting The Cutting Unit Lift/Drop - Toro greensmaster 3100 Operator's Manual

Forward
1. Press the traction pedal fully forward until the
No. 5 section, valve spool is completely pulled
out.
2. The pedal should contact the pedal stop. If the
pedal contacts the stop before the spool is
completely out, or if the pedal does not make
contact with the stop, the stop must be adjusted.
1. Fully forward
2. Pedal stop
3. Reverse
4. Control rod
3. Loosen the hex nut securing the threaded rod to
the frame. Turn the flange nut on the rod to raise
or lower the stop (rod), while checking the pedal.
4. When completed, tighten the nut.
Reverse
1. Press down on the rear of the traction pedal
(reverse) until the No. 5 section spool valve is
completely pushed in.
2. Check the distance between the bottom of the
pedal and the footrest, as shown in Fig. 48.
Distance should be approximately 4.8mm. If the
distance is greater or less than 4.8mm, an
adjustment to the traction control rod is required.
3. Remove the jam nut and ball joint securing the
control rod to the traction shaft pivot.
4. Loosen the jam nuts securing the ball joints to
the control rod and adjust the ball joints and
Figure 44
control rod to attain 4.8mm dimension when
reinstalled.
Adjusting the Cutting Unit
Lift/Drop
1. The machine's cutting unit lift/drop circuit is
equipped with a flow control valve. This valve is
pre-set at the factory at approximately 3-1/2 turns
open, but an adjustment may be required to
compensate for differences in hydraulic oil
temperatures, mowing speeds, etc. If an
adjustment is required, proceed as follows:
Note: Allow hydraulic oil to reach full operating
temperature before adjusting the flow control
valve.
2. Raise the seat and locate the flow control valve
mounted to the main control valve.
1. Flow control valve
3. Loosen the jam nut retaining the adjusting knob
on the flow control. When loosening the jam nut,
hold the flow control knob to prevent it from
rotating.
4. Rotate the knob 1/4 turn counterclockwise if the
center cutting unit is dropping too late or turn it
1/4 turn clockwise if the center cutting unit is
dropping too early.
5. After achieving the desired setting, hold the knob
to prevent any further rotation and tighten the
jam nut.
34
Figure 45