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Mower Maintenance
Pivoting (Tilting) the Front
Cutting Unit Upright
Note:
Although not needed for normal maintenance
procedures, the front cutting unit can be pivoted
(tilted) to an upright position. Should you desire to tilt
the cutting unit, proceed as follows:
1.
Raise the front cutting unit slightly off of the
floor, set the parking brake, and stop the engine.
Remove the ignition key.
2.
Remove the hairpin cotter and clevis pin
securing the deck transport latch to the latch
plate. Pivot latch toward rear of deck.
3.
Remove the hairpin cotter and clevis pin
securing the height-of-cut chains to the rear of
the cutting unit.
4.
Start the engine, slowly raise the front cutting
unit, and stop the engine. Remove the ignition
key.
5.
Grasp the front of the cutting unit and lift it to
an upright position.
6.
Hold the cutting unit upright, fit the cable end
over the pin on the cutting unit lift arm and
secure it with the hairpin cotter
Figure 103
1. Cable
Pivoting the Front Cutting
Unit Down
1.
With the help of another person, hold the cutting
unit upright, remove the hairpin cotter securing
the cable end, and remove the cable from the
pin.
2.
Pivot (tilt) the cutting unit downward.
(Figure
103).
g020681
2. Pin
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 8 to 11 mm
(5/16 to 7/16 inch). That is the back of the blade plane
is 8 to 11 mm (5/16 to 7/16 inch) 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
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
67
(Figure
104).
Figure 104
2. U-bolt
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