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Operator Weight
Adjustment
Weight Adjustment
Overview
The operator weight adjustment valve is located at the
left side of the control console
Figure 58
1. Operator weight adjustment control
Use the operator weight adjustment valve to help
compensate for the weight of the operator so that the
machine achieves the correct aerating pressure, plug
length, and to help maximize lateral machine stability;
refer to the following procedures:
•
Assembling the Weight Control Knob (page 47)
•
Adjusting the Operator Weight Control Valve
(page 47)
•
Removing the Weight Control Knob (page 48)
Important:
Adjust the operator weight adjustment
valve if the weight of each operator differs.
Assembling the Weight
Control Knob
1.
Ensure that the setscrew in the weight control
knob is rotated counterclockwise enough so
that the knob slips over the shaft of the weight
control valve
(Figure
(Figure
58).
59).
1. Weight control valve
2. Jam nut
2.
Ensure that the jam nut on the shaft of the
weight control valve is tightened
refer to step
Control Valve (page
3.
Assemble the knob onto the shaft of the weight
control valve
4.
Tighten the setscrew of the knob by hand.
g249578
Adjusting the Operator
Weight Control Valve
Note:
Adjust the system pressure so that the drive
tires lightly touch the ground.
Important:
Keep the drive tires on the ground at
all times to maximize lateral machine stability.
1.
Raise the tines, drive the aerator to a hard, flat
turf surface, and stop the aerator, but leave the
engine running.
2.
Have the operator stand on the operator's
platform.
3.
Loosen the jam nut for the weight control valve,
refer to
Figure 59
Control Knob (page
4.
Press the tine ground engagement foot switch
to lower the tines.
•
If the machine raises and the ground tires
are no longer touching, rotate the operator
weight adjustment control counterclockwise
to lower the machine until the tires touch the
ground.
•
If the tines are not touching the ground,
rotate the operator weight adjustment control
clockwise until the tines lower and touch the
ground (but not raise the machine).
Important:
ground at all times to maximize lateral
machine stability.
47
Figure 59
3. Knob
(Figure
6
in
Adjusting the Operator Weight
47).
(Figure
59).
in
Assembling the Weight
47).
Keep the drive tires on the
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59);
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