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Hydraulic System
Maintenance
Changing the Hydraulic Fluid
Change hydraulic fluid after every 800 operating hours, in
normal conditions. If fluid becomes contaminated, contact
your local Toro distributor because the system must be
flushed. Contaminated fluid looks milky or black when
compared to clean oil.
1. Stop the engine and raise the hood.
2. Place a large drain pan under the fitting secured to the
bottom of the hydraulic fluid reservoir (Figure 55).
Figure 55
1.
Hose
3. Disconnect the hose from the bottom of the fitting and
let the hydraulic fluid flow into the drain pan.
4. Install the hose when hydraulic fluid stops draining.
5. Fill the reservoir with approximately 12 U.S. gallons
(45l) of hydraulic fluid; refer to Checking the Hydraulic
Fluid..
Important: Use only hydraulic fluids specified.
Other fluids could cause system damage.
6. Install the reservoir cap.
7. Start the engine and use all of the hydraulic controls to
distribute hydraulic fluid throughout the system. Also
check for leaks.
8. Stop the engine.
9. Check the level of the hydraulic fluid and add enough
to raise level to the Full mark on the dipstick.
Important: Do not over-fill.
Replacing the Hydraulic Filters
The hydraulic system is equipped with a service interval
indicator (Figure 56). With the engine running, view the
indicator, it should be in the Green zone. When the indicator
is in the Red zone, change the hydraulic filters.
1. Hydraulic filter restriction indicator
Important: Use of any other filters may void the
warranty on some components.
1. Position the machine on a level surface, lower the
cutting decks, stop the engine, engage the parking
brake, and remove the key from the ignition switch.
2. Clean the area around the filter mounting area and place
a drain pan under filter (Figure 57) and (Figure 58).
1. Hydraulic filter
41
Figure 56
Figure 57
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