Adjusting The Mowing Speed; Adjusting The Cutting Unit Lift/Drop; Adjusting The Belt - Toro 04383 Greensmaster 3250-D 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 trunnion capscrew (Fig. 54).
2. Loosen the nut securing the lock and mow brackets on
the pedal pivot.
2
3
Figure 54
1. Jam nut
2. Nut
3. Rotate the trunnion capscrew clockwise to reduce the
mowing speed and counterclockwise to increase the
mowing speed.
4. Tighten the jam nut on the trunnion capscrew and the
nut on the pedal pivot to lock the adjustment (Fig. 54).
Check the adjustment and adjust as required.
Adjusting the Cutting Unit
Lift/Drop
The cutting unit lift/drop circuit is equipped with a flow
control valve (Fig. 55). This valve is preset at the factory
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 for the
center pull frame (Fig. 55) which is located on the side
of the hydraulic manifold.
2. Loosen the jam nut on the flow control valve.
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
jam nut.
1
3. Trunnion capscrew
38
1
Figure 55
1. Flow control valve

Adjusting the Belt

Make sure the belt is properly tensioned to ensure proper
operation of the machine and prevent unnecessary wear. On
new belts, check the tension after 8 operating hours.
The engine belt (Fig. 56) should be tensioned so it deflects
3/16 in. (5 mm) with a 2–3 lb. (1 kg) load applied midway
between the crankshaft and the alternator pulley.
1. Loosen the bolts securing the alternator to the engine
and adjusting strap.
1
Figure 56
1. Engine belt
2. Adjust the belt to the proper tension and tighten the
bolts.