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).
g033113
Figure 34
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 29)
.
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
HIGH IDLE
, using hydraulic-test
ports.
Note:
Adjust the counterbalance to 2241 kPa
(325 psi).
5.
Check for bent blades; refer to
Bent Blade (page 79)
.
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 29)
.
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.
33
Summary of Contents for Groundsmaster 4000
Page 85: ...Notes ...
