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Hydraulic System
Maintenance
Changing the Hydraulic Fluid
Service Interval: After the first 200 hours
Every 800 hours
Change the hydraulic fluid after every 800 operating hours,
in normal conditions. If the 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. Turn the engine off and raise the hood.
2. Loosen the drain valve on the bottom of the reservoir
and let the hydraulic fluid flow into large drain pan.
Close the valve when the hydraulic fluid stops draining.
3. Fill the reservoir (Figure 74) with approximately 8
gallons (30 l) of hydraulic fluid; refer to Checking the
Hydraulic Fluid.
Important: Use only the hydraulic fluids
specified. Other fluids could cause system
damage.
Figure 74
1. Hydraulic reservoir
4. Install the reservoir cap. Start the engine and use all
of the hydraulic controls to distribute hydraulic fluid
throughout the system. Also check for leaks; then stop
the engine.
5. Check the fluid level and add enough to raise level
the level to the FULL mark on the dipstick. Do not
overfill.
Replacing the Hydraulic Filters
Service Interval: After the first 200 hours
Every 800 hours
Change the 2 hydraulic filters initially after the first 200
operating hours. Thereafter, change the filters after every 800
operating hours, in normal conditions.
Use Toro replacement filters (Part No. 94-2621 for the left
side of the machine and 75-1310 for the right side of the
machine).
Important: Use of 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
brakes, and remove the ignition key.
2. Clean the area around the filter mounting area. Place
a drain pan under the filter and remove the filter
(Figure 75).
3. Lubricate the new filter gasket and fill the filter with
hydraulic fluid.
4. Ensure that the filter mounting area is clean. Screw the
filter on until the gasket contacts the mounting plate;
then tighten the filter an additional 1/2 turn.
5. Start the engine and let it run for about two minutes to
purge air from the system. Stop the engine and check
for leaks.
47
Figure 75
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