Removing Hydraulic System Filters

Exmark 4501-191 Rev.A manual Changing the Hydraulic System Filter and Oil

Maintenance

Check expansion reservoir and if necessary add 20W-50 engine oil to the FULL COLD line.

Figure 34

1. Expansion reservoir

3. Engine

2.Full Cold line

Changing the Hydraulic System Filter and Oil

Service Interval: After the first 50 hours

Every 400 hours thereafter.

The filter and oil are changed at the same time. Do Not reuse oil. Once the new filter is installed and oil is added any air in the system must be purged.

The bleeding process is repeated until the oil remains at the FULL COLD line in the reservoir after purging.

Failure to properly perform this procedure can result in irreparable damage to the transaxle drive system.

1.Stop engine, wait for all moving parts to stop, and allow engine to cool. Remove the key and engage the parking brake.

2.Raise the rear of machine up and support with jack stands (or equivalent support) just high enough to allow drive wheels to turn freely.

Figure 35

1.Jacking points

3.Remove the nuts holding the transaxle support in place (Figure 36).

Figure 36

1. Nut (5/16 inch) (27 to 33 3. Transaxle support ft-lb)

2.Nut (3/8 inch) (15 to 19 ft-lb)

4.Locate the filter and filter guards on each transaxle drive system (Figure 37). Remove three screws securing the filter guard and guard.

4501-191 Rev.A specifications

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