Toro 31598N Operator's Manual page 30

Figure 26
Note: When mowing at height-of-cuts below 64 mm
(2-1/2 inch), move the skids, gage wheels and rollers
to the highest holes.
7. To attain the 102 to 153 mm (5 to 6 inch) height of cut
settings, remove the mounting bolts securing the deck
hanger brackets to the height of cut castor arms and
remount the deck hanger brackets to the height of cut
castor arms using the lower set of holes
Figure 27
1. Lower mounting bolts
Side Cutting Units
1. Start the engine and raise the cutting units so that the
height-of-cut can be changed. Stop the engine and
remove the key after the cutting unit is raised.
2. Position the castor wheel axles in the same holes in all
castor forks. Refer to the chart
the correct holes for the height of cut setting.
(Figure 27).
(Figure 28) to determine
30
Figure 28
Note: When operating at 64 mm (2-1/2 inch) height
of cut or higher, the axle bolt should be installed in
the bottom castor fork hole to prevent grass buildup
between the wheel and the fork. When operating at
heights of cut lower than 64 mm (2-1/2 inch) and grass
buildup is detected, reverse the machines direction to
pull any clippings away from the wheel/fork area.
3. Remove the tensioning cap from the castor spindle
shaft (Figure 29) and slide the castor shaft out of the
castor arm. Put 2 shims (3 mm [1/8 inch] ) onto
the shaft as originally installed. Slide the appropriate
number of 1/2 inch spacers onto the shaft to get the
desired height-of-cut.
Note: The shim washers may be used in any
combination above or below the castor arm hub as
required to achieve the desired height of cut or deck
level.
Figure 29
1. Tensioning cap
2. Spacers (4)
3. Shims (2 top and 2 bottom)
4. Push the castor shaft through the castor arm. Install
the shims (as originally installed) and the remaining
spacers onto the shaft. Install the tensioning cap to
secure the assembly.
4. Top axle mounting hole
5. Castor wheel