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Hydraulic System
Maintenance
Changing the Hydraulic Fluid
Service Interval: Every 400 hours
If the fluid becomes contaminated, contact a Toro
distributor to flush the hydraulic system. Contaminated
hydraulic fluid looks milky or black when compared to
clean fluid.
1. Turn the engine off and raise the hood.
2. Disconnect the hydraulic line (Figure 69) or remove
the hydraulic filter (Figure 70) and let the hydraulic
fluid flow into a drain pan.
Figure 69
1. Hydraulic line
Figure 70
1. Hydraulic filter
3. Install the hydraulic line when hydraulic fluid stops
draining.
4. Fill the reservoir (Figure 71) with approximately
3.5 U.S. gallons (13.2 l) of hydraulic fluid; refer to
Checking the Hydraulic System.
Important: Use only the hydraulic fluids
specified. Other fluids could damage the
hydraulic system.
1. Hydraulic fill cap
5. Install the reservoir cap, start the engine, and use all
of the hydraulic controls to distribute the hydraulic
fluid throughout the system.
6. Check for leaks; then stop the engine.
7. Check the fluid level and add enough to raise the
level to Full mark on the dipstick. Do not overfill.
Changing the Hydraulic Filter
Service Interval: After the first 10 hours
Every 200 hours/Yearly (whichever
comes first)
Use a genuine Toro replacement filter (Part No.
54-0110).
Important: Using any other filter may void the
warranty on some components.
1. Position the machine on a level surface, lower the
cutting units, stop the engine, engage the parking
brake, and remove the key from the ignition switch.
2. Pinch off the hose to the filter mounting plate.
3. Clean around the filter mounting area.
4. Place a drain pan under the filter (Figure 70) and
remove the filter.
5. Lubricate the new filter gasket and fill the filter with
hydraulic fluid.
6. Ensure that the filter mounting area is clean, screw
the filter on until the gasket contacts the mounting
plate, and then tighten the filter 1/2 turn.
7. Release the hose to the filter mounting plate.
8. Start the engine and let it run for about two minutes
to purge the air from the system.
9. Stop the engine and check for leaks.
50
Figure 71
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