General Information
4520 Operator’s Manual and Accessory Installation
Instructions
The 4520 Operator’s Manual and accessory Installation Instructions provide
information regarding the operation, general maintenance, and maintenance intervals
for the machine and its accessories. Refer to the Operator’s Manual and accessory
Installation Instructions for additional information.
Towing the 4520
CAUTION
Failure to place the transaxles in neutral when towing or pushing the power
unit will result in damage to the power unit drivetrain.
CAUTION
Use caution when towing or pushing the 4520 as steering may not function. Do
not exceed 8 km/h (5 mph). Be prepared to engage the parking brake to stop the
machine.
1. Turn the ignition off and allow the engine to stop.
2. Place the transaxles in neutral by shifting the high/low range shift handle to the
middle of the shift stroke.
3. Disengage the parking brake and move the unit slowly.
Relieving Pressure from the Hydraulic System
Release all the pressure in the hydraulic system before performing any work on the
hydraulic system.
1. Park the machine on a level surface and lower any attachments to the ground.
2. Turn the key switch to the O
FF position and allow the engine to stop.
3. Turn the steering wheel left and right.
4. Cycle the primary and secondary SDLA lever forward, backward, left and right.
5. Cycle the auxiliary hydraulic controls.
6. If equipped, cycle the 3–point hitch control levers.
Hydraulic System: General Information Page 5–2 4520P
09.40003Rev 00
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