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Figure 57
1. Injection pump lever arm
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. Turn engine off and raise hood.
2. Remove drain plug from bottom of reservoir (Fig. 58)
and let hydraulic fluid flow into drain pan. Reinstall and
tighten plug when hydraulic fluid stops draining.
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Figure 58
1. Hydraulic reservoir
3. Fill reservoir with approximately 8.5 gallons of
hydraulic fluid; refer to Checking the Hydraulic Fluid,
page 22.
Important Use only hydraulic fluids specified. Other
fluids could cause system damage.
4. Install reservoir cap. Start engine and use all hydraulic
controls to distribute hydraulic fluid throughout the
system. Also check for leaks. Then stop the engine.
5. Check level of fluid and add enough to raise level to
FULL mark on dipstick. Do not over-fill.
Replacing the Hydraulic Filter
The hydraulic system filter head is equipped with a service
interval indicator. With the engine running, view the
indicator, it should be in the GREEN zone. When the
indicator is in the RED zone, the filter element should be
changed.
Use the Toro replacement filter (Part No. 75-1310).
Important Use of any other filter may void the
warranty on some components.
1. Position machine on a level surface, lower the cutting
units, stop the engine, engage the parking brakes, and
remove key from ignition switch.
2. Clean area around filter mounting area (Fig. 59). Place
drain pan under filter and remove filter.
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Figure 59
1. Hydraulic filter
3. Lubricate new filter gasket and fill the filter with
hydraulic fluid.
4. Ensure that the filter mounting area is clean. Screw
filter on until gasket contacts mounting plate. Then
tighten filter one half turn.
5. Start engine and let run for about two minutes to purge
air from the system. Stop the engine and check for
leaks.