Toro 30426 - Adjust Counterbalance; (Groundsmaster 4100-D Only); Adjust Lift Pressure; (Groundsmaster 4000-D Only)

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12. Secure hydraulic hoses with (4) wire ties as shown in
figure 14. Space wire ties along length of hoses.
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1
Figure 14
1. Wire ties
Note: Hoses must not contact sharp edges or moving parts
and must be free of twists.
13. Install chain cover onto frame and secure with retainer
knob, flat washer and retaining ring (Fig. 15).
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Figure 15
1. Chain cover
Adjust Counterbalance
(Groundsmaster 4100–D only)
Reduce counterbalance by unscrewing the stem on the
valve approximately 3 turns.
Important Whenever rotary brush is removed, make
sure to readjust the counterbalance pressure to it’s original
setting.
Adjust Lift Pressure
(Groundsmaster 4000–D only)
• Remove the jam nut securing the plug assembly in the
lift control valve (Fig. 16) Remove the plug and the
washers from the lift control valve. Note the order of
the components during removal.
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2
3
Figure 16
1. Control valve
2. Lift pressure plug
assembly
3. Jam nut
• Remove the gray lift pressure spring from the lift
control valve and replace it with the green spring
included in the kit (Fig. 17). Retain the gray spring to
reinstall if the rotary brush is removed.
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Figure 17
1. Jam nut
2. Plug assembly
3. Spring
• Reinstall all the components but do not tighten the jam
nut on the plug assembly.
• Rotate the plug assembly to attain 2700 psi minimum.
• Tighten the jam nut on the plug assembly.
Important Whenever the rotary brush is removed,
make sure to reinstall the gray spring into the lift control
valve and readjust the lift relief pressure to it’s original
setting.