Adjusting the Mower-Deck
Rollers
The mower-deck 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 33
Correcting a Mismatch
Between the Mower Decks
Due to differences in grass conditions and the
counterbalance setting of the traction unit, cut a
sample area of grass and check the appearance
before cutting the entire area.
1.
Set all mower decks to the desired height of cut;
refer to
Adjusting the Height of Cut (page 29)
.
2.
Check and adjust the front and rear tire
pressures to 172 to 207 kPa (25 to 30 psi).
3.
Check and adjust all of caster tire pressures 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 77)
.
6.
Cut grass in a test area to determine if all mower
decks 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 mower decks onto a flat surface and
remove the covers from the top of the mower
decks.
10.
Loosen the flange nut, securing the idler pulley,
to release the belt tension on each mower deck.
Front Mower Deck Setup
Rotate the blade on each spindle until the ends face
forward and backward. Measure from the floor to the
front tip of the cutting edge. Adjust the shims on the
front caster fork(s) to match the height-of-cut decal
(
); refer to
Measuring the Mower-Deck Pitch
(page 75)
.
33
