9 MAINTENANCE
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9.10 HYDRAULIC FLUID ________________________________________________________
Drain and replace the hydraulic oil if one of the following occur.
• Component failure
• Water or foam is in the hydraulic fluid
• The hydraulic fluid has a rancid odor (indication of high heat)
• Every 500 hours or each year, which is the first to occur.
Always replace the hydraulic filter when you replace the hydraulic fluid.
a Clean the area around the oil cap and filters to prevent dirt to enter the hydraulic system.
b Place a container capable of holding 2 gallons under the hydraulic tank.
c Remove both filters from the bottom of the tank.
d After the oil has drained, install two new filters and fill the tank with hydraulic fluid.
e Start the engine and remove the air from the hydraulic system. Operate all mower functions for 5 minutes to
remove the air and to balance the hydraulic fluid level.
f When the oil-level has balanced and the air is removed, add fluid to the tank to one inch below the filler neck.
9.11 HYDRAULIC FILTER _______________________________________________________
The hydraulic system is protected by two 40 micron filters. Replace the hydraulic filters when the hydraulic oil is
replaced.
When you replace the filter, -
a Fill the new filter with hydraulic fluid and lubricate the filter O-ring with hydraulic fluid before you assemble the
new filter. Tighten the filter with your hand.
b Operate the engine at idle speed for five minutes to remove the air from the hydraulic system.
c Stop the engine and check the level of hydraulic fluid in the tank. Add the hydraulic fluid to the Full mark on the
dipstick.
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