Adjusting Height Of Cut - Toro GROUNDSMASTER 580-D 30581 Operator's Manual

Before Operating
Position all castor arm height-of-cut spacers to on
the underside of the castor arms. Do not move
washers. Leave them in their original position.
Note: Unless all castor wheel axles are not in the
same location, axles do not have to be relocated.
All, however, must be in the same holes (Fig. 8).
2. Place a flat sheet of plywood at least 2mm thick and
at least 1.2m x 2.4 m on a level surface and lower
the cutting unit onto the plywood.
3. Taking each cutting blade in turn, position the blade
so it faces fore and aft. Measure from plywood to
the front tip of the cutter blade and record
dimension. All blade heights on the same deck
should be within 6.3 mm of one another. If blade
heights meet criteria, proceed to step 5. If blade
heights are not within 6.3 mm, proceed to step 4.
4. To match cutting blade height, transfer washers
from one side of a castor wheel arm to the other. If
end is to be lowered, transfer one or both washers
from the underside to the top. By contrast, if end is
to be raised, transfer washer(s) from the top to the
underside. Each washer is 3 mm thick. Repeat
measurement of blade tip height and record new
dimensions.
5. Repeat steps 2–3 on the remaining cutting units, and
step 4, if necessary. If washers are transferred on a
outboard cutting unit castor arm, be sure to transfer
the same number on both ends of the castor arm.
6. Compare blade height dimensions of all cutting
units. Blade heights must be within 9.5 mm of one
another. If they are not, determine which cutting
unit height can be changed to compensate for
difference and either transfer washers from bottom
to top to lower unit, or from top to bottom to raise.
Transfer an equal number of washers at all castor
wheel locations to keep cutting unit level -two on
front unit, four on outboard units.

ADJUSTING HEIGHT OF CUT

The height of cut is adjustable from 25 to 140 mm in 13mm
increments. Positioning the castor wheel axles in the top
holes of the castor forks (Fig. 8) allows low-range height-
of-cut settings from 25 to 102 mm; positioning the castor
wheel axles in the lower holes of the castor forks (Fig. 8)
allows high-range height-of-cut settings from 63.5 to 140
mm.
14
1. Low range
2. High range
3. Spacers
4. Height of cut
1. Start the engine, position the machine on a level
surface, lower the cutting units to a point where the
castor wheels can be removed from the arms, set the
lift levers in neutral, set the parking brake and shut
off the engine. Remove the ignition key to prevent
accidental startup.
2. Position the castor wheel axles on all cutting units
in the same hole in the castor forks.
3. On the front cutting unit, remove the hairpin cotter
and clevis pins from the rear castor pivot arms (Fig.
9). Align the pivot arm holes with selected
height-of-cut bracket holes in the deck frames,
insert the clevis pins and install the hairpin cotters
(Fig. 9).
1. Hairpin cotter
2. Clevis pin
3. Castor axle mount holes
4. Pivot arm
4. On all remaining castor wheel assemblies, remove
the lynch pin from the castor fork shafts (Fig. 10).
Figure 8
Figure 9