Down; Pitch; Pivoting The Front Cutting Unit Down - Toro 30411 Groundsmaster 4100-D Operator's Manual

Figure 81
1. Height-of-cut chain
4. Start the engine and slowly raise the center
cutting unit.
5. Slowly raise each wing cutting until the center
of gravity shifts and the deck starts to rotate
into the upright position. Stop the engine and
remove the ignition key.
Pivoting the Front Cutting
Unit Down
1. Slowly lower wing cutting units until the center
of gravity shifts and the center cutting unit
rotates downward.
2. Sit on the seat, start the engine, and lower the
center cutting unit until it is slightly off of the
floor.
3. Secure the height-of-cut chains to the rear of
the cutting unit.
4. Pivot dampers upward into position and secure
with clevis pin and cotter pin.
Adjusting the Cutting Unit

Pitch

Measuring the Cutting Unit Pitch
Cutting unit pitch is the difference in height-of-cut
from the front of the blade plane to the back of
the blade plane. Toro recommends a blade pitch
of 1/4 inch (6 mm). That is the back of the blade
plane is 1/4 inch (6 mm) higher than the front.
1. Position the machine on a level surface on the
shop floor.
2. Set the cutting unit to the desired height-of-cut.
3. Rotate 1 blade so that it points straight forward.
4. Using a short ruler, measure from the floor to
the front tip of the blade. Rotate the blade tip
to the rear and measure from the floor to the
tip of the blade.
5. Subtract the front dimension from the rear
dimension to calculate the blade pitch.
Adjusting the Front Cutting Unit
1. Loosen the jam nuts on the top or bottom of
the height-of-cut chain U-bolt (Figure 82).
2. Adjust the other set of nuts to raise or lower
the rear of the cutting unit and attain the
correct cutting unit pitch.
3. Tighten the jam nuts.
Figure 82
1. Height-of-cut chain
Adjusting the Wing Cutting Units
1. Remove the cap screws and nuts securing the
castor arm to the castor fork (Figure 83).
2. Reposition the shims, as required, to raise or
lower the castor wheel until the cutting unit
has the correct pitch.
3. Install the cap screws and nuts.
52
2. U-bolt