Correcting A Mismatch Between The Cutting Units - Toro Groundsmaster 5900 Operator's Manual

Correcting a Mismatch
Between the Cutting Units
Due to differences in grass conditions and the
counterbalance setting of the traction unit, you should
cut the grass and check the appearance before you
begin mowing the entire area.
1. Set all cutting units to the desired height of cut;
refer to Adjusting the Height of Cut (page
2. Check and adjust the front and rear tire pressure.
Note:
The correct air pressure in the front tires
is 220 kPa (32 psi) and the rear tires is 207 kPa
(30 psi).
3. Check and adjust all caster tire pressures to 340
kPa (50 psi).
4. Check the lift and counterbalance pressures with
the engine throttle at HIGH IDLE using the test
ports; refer to Inspecting the Hydraulic System
Test Ports (page
5. Check for bent blades; refer to
Bent Blade (page
6. Cut grass in a test area to determine if all cutting
units are mowing at the same height.
7. If you need to adjust a cutting unit, find a flat
surface using a 2 m (6 ft) or longer straight edge
to ensure that the surface is flat.
8. To ease measuring the blade plane, raise the
height of cut to the highest position; refer to
Adjusting the Height of Cut (page
9. Lower the cutting units onto the flat surface and
remove the covers from the tops of the cutting
units.
Wing Cutting Units
1. Rotate the blade of each spindle until the ends
face forward and backward.
2. For the outside blade spindle only, equally adjust
the shims on the front caster forks to match the
desired height of cut.
3. Measure from the floor to the front tip of the
mowing blade.
4. Rotate the blade 180° and measure from the
floor to the tip of the mowing blade.
Note:
The rear of the blade should be 7.5 mm
(0.3 inch) higher than the front.
Note:
If you need to make an adjustment,
adjust the shims on the rear caster forks.
88).
Checking for a
92).
30).
Matching the Height of Cut
Between Cutting Units
1. Position the blade side to side on the outside
spindle of both wing cutting units.
2. Measure from the floor to the tip of the
cutting edge on both units and compare the
measurements.
Note:
30).
(1/8 inch) of each other. Make no adjustment
at this time.
3. Position the blade side to side on the inside
spindle of the wing cutting unit and the
corresponding outside spindle of the front cutting
unit.
4. Measure from the floor to the tip of the cutting
edge on the inside edge of the wing cutting unit
to the corresponding outside edge of the front
cutting unit and compare.
Note:
wheels should remain on the ground with
counterbalance applied.
Note:
match the cut between the front and wing cutting
unit, make them to the wing cutting units only.
5. If the inside edge of the wing cutting unit is too
high relative to the outside edge of the front
cutting unit, remove 1 shim from the bottom of
the front, inside caster arm on the wing cutting
unit (Figure 28
Note:
outside edges of both wing cutting units and the
inside edge of the wing cutting unit to outside
edge of the front cutting unit again.
34
These numbers should be within 3 mm
The wing cutting unit caster
If you need to make an adjustment to
and Figure 29).
Check the measurement between the