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WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• If hydraulic fluid is injected into the skin
it must be surgically removed within a few
hours by a doctor familiar with this type of
injury. Gangrene may result if this is not
done.
• Keep body and hands away from pin hole
leaks or nozzles that eject high pressure
hydraulic fluid.
• Use cardboard or paper to find hydraulic
leaks.
• Safely relieve all pressure in the hydraulic
system before performing any work on the
hydraulic system.
• Make sure all hydraulic fluid hoses and
lines are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to hydraulic system.
Replacing the Hydraulic Filter and
Hydraulic Oil
Service Interval: After the first 8 hours
Every 250 hours—Change the
hydraulic filter and hydraulic oil when
using Mobil
Every 500 hours—Change the
hydraulic filter and hydraulic oil
when using Toro
hydraulic oil.
WARNING
Hot hydraulic fluid can cause severe burns.
Allow the hydraulic fluid to cool before performing
any maintenance to the hydraulic system.
1. Disengage the PTO and set the parking brake.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
Important: Do not substitute automotive oil
filter or severe hydraulic system damage may
result.
3. Locate the filter under the fuel tank and place drain
pan under filter (Figure 60).
®
1 oil.
®
HYPR-OIL
™
500
4. Remove the old filter, allow the oil to drain and wipe
the filter adapter gasket surface clean (Figure 61).
5. Apply a thin coat hydraulic fluid to the rubber gasket
on the replacement filter.
6. Install replacement hydraulic filter onto the filter
adapter. Do not tighten.
7. Fill the hydraulic tank with hydraulic fluid until the
fluid overflows the filter and then turn the oil filter
clockwise until the rubber gasket contacts the filter
adapter, then tighten the filter an additional 1/2 turn
(Figure 61).
1. Hydraulic filter
2. Gasket
8. Clean up any spilled fluid.
9. Check the fluid in the reservoir, add fluid to the tank
until it reaches the cold baffle of the tank.
Important: Use oil specified. Other fluids could
cause system damage.
10. Start engine and let run for about two minutes to
purge air from the system. Stop the engine and
44
Figure 60
Figure 61
3. Adapter
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