Pivoting The Front Cutting Unit Down; Adjusting The Cutting Unit Pitch - Toro 30413 Operator's Manual

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 76).
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.
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 77).
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.
1. Castor wheel
2. Tensioning cap
3. Spacers
51
Figure 76
2. U-bolt
Figure 77
4. Shims
5. Axle mounting holes