Adjusting The Mowing Speed; Adjusting The Cutting Unit Lift/Drop - Toro 04383 Operator's Manual

Adjusting the Mowing Speed

The machine is adjusted at the factory, but speed may be
varied if desired.
1. Loosen the jam nut on the trunion capscrew (Fig. 43).
2. Loosen the nut securing the lock and mow brackets on
the pedal pivot.
2
3
Figure 43
1. Jam nut
2. Nut
3. Rotate the trunion capscrew clockwise to reduce the
mowing speed and counterclockwise to increase the
mowing speed.
4. Tighten the jam nut on the trunion capscrew and the
nut on the pedal pivot to lock the adjustment (Fig. 43).
Check the adjustment and adjust as required.
34
1
3. Trunion capscrew
Adjusting the Cutting Unit
Lift/Drop
The cutting unit lift/drop circuit is equipped with a flow
control valve (Fig. 44). This valve is preset at the factory
at approximately 3 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 the hydraulic oil to reach full operating
temperature before adjusting the flow control valve.
1. Raise the seat and locate the flow control valve
(Fig. 44) mounted to the hydraulic cylinder for the
center pull frame.
1
Figure 44
1. Flow control valve
2. Loosen the set screw on the adjusting knob on the flow
control.
3. Rotate the knob 1/4 turn counterclockwise if the center
cutting unit is dropping too late or 1/4 turn clockwise
if the center cutting unit is dropping too early.
4. After the desired setting has been achieved, tighten the
set screw.