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Hydraulic System
Maintenance
Servicing the Hydraulic
System
Hydraulic Oil Type: Toro
or 20W-50 engine oil.
Important: Use oil specified. Other fluids could cause
system damage.
Hydraulic System Capacity (with filters removed): 150.6
ounces (4.45 l)
Checking the Hydraulic Oil Level
Service Interval: Every 25 hours
1. Allow the hydraulic oil to cool down. Check the oil
level when the oil is cold.
2. Check expansion reservoir and if necessary add Toro
™
HYPR-OIL
500 hydraulic oil to the FULL COLD
line.
Figure 67
1. Expansion reservoir
Changing the Hydraulic
System Filter and Oil
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
®
HYPR-OIL
™
500 hydraulic oil
G017452
1
2
G017451
2. FULL COLD line
properly perform this procedure can result in irreparable
damage to the transaxle drive system.
Removing Hydraulic System Filters
1. Stop engine, wait for all moving parts to stop, and
allow engine to cool. Remove the key and engage the
parking brake.
2. Locate the filter and guards on each transaxle drive
system (Figure 68). Remove three screws securing the
filter guard and guard.
®
G017444
1. Transaxle drive
2. Oil filter
3. Filter guard
3. Carefully clean area around filters. It is important that
no dirt or contamination enter hydraulic system.
4. Place a container below the filter to catch the oil that
drains when the filter and vent plugs are removed.
5. Locate and remove the vent plug on each transmission
6. Unscrew the filter to remove and allow oil to drain
from drive system.
Repeat this procedure for both filters.
Installing the Hydraulic System Filters
Service Interval: After the first 50 hours
Every 400 hours
46
5
3
4
Figure 68
Right side shown
4. Screws
5. Vent plug
1
2
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