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Adjusting the Cutting Unit
Rollers
The cutting unit rollers should be mounted in the lower
position when operating at height of cuts greater than
64 mm (2-1/2 inches), and in the higher position when
operating in height of cuts lower than 64 mm (2-1/2
inches).
Figure 31
Correcting a Mismatch
Between the Cutting Units
Due to differences in grass conditions and the
counterbalance setting of the traction unit, a sample
area of grass should be cut and the appearance
checked before formal cutting is started.
1.
Set all cutting units to the desired height of cut;
refer to
Adjusting the Height of Cut (page
2.
Check and adjust the air pressure in the front
and rear tire of the machine to 172 to 207 kPa
(25 to 30 psi).
3.
Check and adjust the air pressure in all of the
caster tires for the cutting unit to 345 kPa (50
psi).
4.
Check the charge and counterbalance pressures
with the engine at
ports.
Note:
Adjust the counterbalance to 2241 kPa
(325 psi).
5.
Check for bent blades; refer to
Bent Blade (page
6.
Cut grass in a test area to determine if all cutting
units are cutting at the same height.
7.
If mower-deck adjustments are still needed,
find a flat surface using a 2 m (6 ft) or a longer
straight edge.
8.
To ease measuring the blade plane, raise the
height-of-cut to 7.6 to 10.1 cm (3 to 4 inches);
refer to
Adjusting the Height of Cut (page
, using hydraulic-test
HIGH IDLE
Checking for a
68).
9.
Lower the cutting units onto a flat surface and
remove the covers from the top of the cutting
units.
10.
Loosen the flange nut, securing the idler pulley,
to release the belt tension on each cutting unit.
Setting Up the Center Cutting Unit
Note:
It is best to use the Toro tool (Part No.
121-3874) to tighten the tensioning cap.
1.
Rotate the blade on each spindle until the ends
face forward and backward.
2.
Measure from the floor to the front tip of the
cutting edge.
3.
Adjust the shims (3 mm or 1/8 inch) on the front
caster fork(s) to match the height-of-cut decal
(Figure
(page
25).
g033113
25).
1. Tensioning cap
2. Spacers
3. Shims
25).
29
32); refer to
Adjusting the Height of Cut
Figure 32
4. Top axle-mounting hole
5. Caster wheel
g008866
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