Adjusting the Rollers
Note:
If the cutting unit is to be used in the 25 or 38
mm (1 or 1-1/2 inch) height-of-cut setting, position the
cutting unit rollers in the top bracket holes.
1.
Remove the screw and nut securing the roller
shaft to the deck bracket (
).
g004487
Figure 13
1.
Roller
2.
Roller shaft
2.
Slide the shaft out of the lower bracket holes,
align the roller with the top holes, and install the
shaft.
3.
Install the screw and nut to secure the
assemblies.
Correcting Cutting Unit
Mismatch
Due to differences in grass conditions and the
counterbalance setting of the traction unit, it is advised
that grass be cut and appearance checked before
formal cutting is started.
1.
Set the cutting unit to the desired height of cut;
refer to
Adjusting the Height-of-Cut (page 11)
.
2.
Check and adjust front and rear tractor tire
pressure to 172 to 207 kPa (25 to 30 psi).
3.
Check and adjust all castor tire pressures to 345
kPa (50 psi).
4.
Check for bent blades; refer to
Bent Blade (page 20)
.
5.
Cut grass in a test area to determine if all cutting
units are cutting at the same height.
6.
If cutting unit adjustments are still needed, find a
flat surface using a 2 m (6 ft) or longer straight
edge.
7.
To ease measuring blade plane, raise the height
of cut to the highest position; refer to
the Height-of-Cut (page 11)
.
8.
Lower cutting unit onto the flat surface. Remove
the covers from the top of the cutting units.
9.
Rotate the blade on each spindle until the ends
face forward and backward.
10.
Measure from the floor to the front tip of the
cutting edge.
11.
Adjust 1/8 inch shims on castor fork(s) to match
height of cut to decal (
); refer to
Adjusting the Cutting Unit Pitch (page 13)
.
g008866
Figure 14
1.
Tensioning cap
4.
Axle mounting holes
2.
Spacers
5.
Castor wheel
3.
Shims
14
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