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Adjusting the Skids
The skids should be mounted in the lower position
when operating at heights of cut greater than 64
mm (2-1/2 inches) and in the higher position when
operating at heights of cut lower than 64 mm (2-1/2
inches).
Note:
When the skids become worn, you can switch
the skid to the opposite sides of the mower, flipping
them over. This will allow you to use the skids longer
before replacing them.
1.
Loosen the screw at the front of each skid
(Figure
28).
Figure 28
2.
Remove the flange-head bolts and nuts from
each skid
(Figure
3.
Move each skid to the desired position and
secure them with the flange-head bolts and nuts.
Note:
Only use the top or center sets of holes
to adjust the skids. The bottom holes are used
when switching sides at which time they become
the top holes on the other side of the mower.
4.
Torque the screw at the front of each skid to 9 to
11 N⋅m (80 to 100 in-lbs).
Adjusting the Cutting Unit Rollers
The cutting unit rollers should be mounted in the lower
position when operating in 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).
1.
Remove the bolt and nut securing the gage
wheel to the cutting unit brackets
28).
(Figure
1. Gage wheel
2.
Align the roller and spacer with the top holes in
the brackets and secure them with the bolt and
nut.
Correcting Mismatch Between
Cutting Units
Preparing to Adjust the Cutting Units
Due to differences in grass conditions and the
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counterbalance setting of the traction unit, it is advised
that a sample area of grass 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.
2.
Check and adjust front and rear tractor tire
pressure to 172-207 kPa (25-30 psi).
3.
Check and adjust all castor tire pressures to 345
kPa (50 psi).
4.
Check charge and counterbalance pressures
with engine at high idle using test ports defined
in Hydraulic Systems Test Ports. Adjust
counterbalance to 2241 kPa (325 psi).
5.
Check for bent blades; refer to Checking for a
Bent Blade.
6.
Cut grass in a test area to determine if all cutting
units are cutting at the same height.
7.
If cutting unit adjustments are still needed, find a
flat surface using a 2 m (6 foot) or longer straight
edge.
8.
To ease measuring 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.
29).
9.
Lower cutting units onto the flat surface.
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.
32
Figure 29
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