Adjusting The Cutting Unit; Pitch - Toro 30410 Operator's Manual

2. Pivot (tilt) the cutting unit downward.
3. Store the cable under the operator's platform.
4. Sit on the seat, start the engine, and lower the
cutting unit until it is slightly off of the floor.
5. Secure the height-of-cut chains to the rear of
the cutting unit.
6. Pivot transport latch 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 86).
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 86
1. Height-of-cut chain
Adjusting the Side Cutting Units
1. Remove the tensioning cap from the spindle
shaft and slide the spindle out of the castor
arm (Figure 87). Reposition the shims, as
required, to raise or lower the castor wheel
until the cutting unit has the correct pitch.
2. Install the tensioning cap.
Figure 87
1. Castor wheel
2. Tensioning cap
3. Spacers
53
2. U-bolt
4. Shims
5. Axle mounting holes