Correcting Mismatch Between Cutting Units - Toro 30411 Operator's Manual

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Figure 21
1. Adjuster bolt
Correcting Mismatch Between
Cutting Units
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 all cutting units to the desired height of cut; refer to
Adjusting the Height of Cut, page 18.
2. Check and adjust front and rear tractor tire pressure to
25–30 psi (172–207 kPa).
3. Check and adjust all castor tire pressures to 50 psi
(345 kPa).
4. Check charge and counterbalance pressures with engine
at high idle using test ports defined in Hydraulic
Systems Test Ports, page 41. Adjust counterbalance
setting to be 230 psi (1585 kPa) higher than charge
pressure reading.
5. Check for bent blades; refer to Checking for a Bent
Blade, page 50.
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 6 foot (2 m) or longer straight edge.
8. To ease measuring blade plane, raise the height of cut to
the 4 inch or higher position; refer to Adjusting the
Height of Cut, page 18.
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2. Jam nut
22
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.
Center Cutting Unit Setup
Rotate blade on each spindle until the ends face forward
and backward. Measure from the floor to the front tip of the
cutting edge. Adjust 1/8 in. shims on front castor fork(s) to
match height of cut to decal (Fig. 22); refer to Adjusting the
Cutting Unit Pitch, page 49.
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Figure 22
1. Castor wheel
2. Tensioning cap
3. Spacers
Wing Cutting Unit Setup
Rotate blade of each spindle until the ends face forward and
backward. Measure from the floor to the front tip of the
cutting edge. Adjust 1/8 in. shims on front castor fork to
match height of cut to decal (Fig. 23). Refer to Adjusting
the Cutting Unit Pitch, page 49.
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4. Shims
5. Axle mounting holes