Pivoting (Tilting) The Front Cutting-Unit Down; Adjusting The Cutting-Unit Pitch - Toro Groundsmaster 5900 Operator's Manual

Pivoting (Tilting) the Front
Cutting-Unit Down
1. With the help of another person holding the front
of the cutting unit, remove the block of wood.
2. Sit on the seat, start the engine, and lower the
cutting unit until it is slightly off the floor.
3. Secure the height-of-cut chains to the rear of
the cutting unit.
4. Connect the damper assembly and secure it
with the retainer clip.
Adjusting the Cutting-Unit
Pitch
Measuring the Cutting-Unit Pitch
The mower-deck pitch is the difference between the
height of cut from the front tip of the blade to the back
tip. Set a blade pitch of 6.3 to 9.7 mm (0.25 to 0.38
inch); i.e., the back tip of the blade should be 7.5 mm
(0.3 inch) higher than the front tip.
1. Park the machine on a level surface, engage the
parking brake, lower the cutting deck, shut off
the engine, and remove the key.
2. Set the cutting unit to the desired height of cut.
3. Ensure that the winglets are level to the front
deck and the front deck is level side to side.
Adjusting the Front Cutting-Unit
Pitch
1. Rotate each blade so that they point straight
forward (Figure 136).
Figure 136
1. Use 1 of these blades for
measuring the front-blade
height.
2. Using a short ruler, measure from the floor to
the front tip of the front blade and record this
dimension.
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2. Use 1 of these blades for
measuring the rear-blade
height.
3. Measure from the floor to the back tip of the
winglet blade and record this dimension.
4. Subtract the front dimension from the rear
dimension to calculate the pitch of each blade.
5. Loosen the jam nuts on the top or bottom of the
height-of-cut chain U-bolt
Note:
Loosen or tighten the height-of-cut chain
nuts equally, so that the deck remains level from
side to side.
1. Height-of-cut chain
2. U-bolt
6. Adjust the other set of nuts to raise or lower the
rear of the cutting unit and attain the correct
mower-deck pitch based on the average pitch
of each blade.
7. Tighten the jam nuts.
90
(Figure 137).
Figure 137
3. Nut (2)
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