Filter
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• Remove the old hydrostatic filter by turning it
counterclockwise, and immediately replace with
the new filter. Turn the filter clockwise by hand
until the gasket contacts the filter base; then
tighten the filter an additional 1/2 to 3/4 turn.
• Clean any residual oil from the top of the
transmission.
Changing Hydraulic System Filter
The hydro transmission oil filter should be changed
after the first 25 of tractor operation, and after every
200 hours operation.
• Stop the tractor engine and lower the mower
deck or any other hydraulically lifted implement
to the ground. NOTE: To improve access to the
hydraulic system filter, the mower deck should
be removed from the tractor.
• The hydraulic system oil filter is remotely
mounted in the vertical position between the
tractor frame rails. See Figure 44.
• Clean the area around the oil filter to prevent
debris from entering the system.
• Position a suitable container below the hydrau-
lic system filter. See Figure 44.
NOTE (25 Hour Break-In Filter Change Only):
Some oil may drain from the transmission when
changing the hydraulic system oil filter. If collected
in a clean container and kept free of debris, this
oil may be reused in the transmission/hydraulic
system.
Figure 44
• Apply a light coating of clean transmission oil to
the gasket of the new hydraulic system filter.
NOTE: If performing the 25 hour break-in filter
change, install the new filter as quickly as possible
to minimize the amount of oil that drains from the
transmission.
• From beneath the tractor frame, remove the old
hydraulic system filter by turning it counter-
clockwise.
• When performing the 200 hour filter change,
clean the oil filter adapter.
• Install the new filter. Turn the filter clockwise,
by hand, until the gasket contacts the surface
of the filter adapter; then tighten the filter an
additional 1/2 to 3/4 turn.
• Clean the area around the transmission fill plug
to prevent debris from entering the transmis-
sion (Refer to Figure 42) and remove the plug.
• Following the instructions previously provided
in CHECKING TRANSMISSION/HYDRAULIC
SYSTEM OIL LEVEL, refill the transmission
with the clean salvaged oil or with new hydrau-
lic oil.
• Reinsert the oil fill plug into the transmission
housing and turn clockwise until tight.
• Start the engine and allow it to run for a few
minutes. Shut the engine off, then check for
leaks and recheck the oil level in the transmis-
sion housing.
CHANGING THE HYDRO TRANSMISSION AND
HYDRAULIC SYSTEM OIL
Change the hydrostatic transmission/hydraulic
system oil after every 200 hours of operation. The
dry capacity of the transmission/hydraulic system is
approximately 20 quarts.
Change the transmission/hydraulic system oil as
follows:
• Operate the tractor for a short period to warm
the oil to the normal operating temperature.
Place the tractor on a level surface and engage
the parking brake.
• Stop the tractor engine and lower the mower
deck or any other hydraulically lifted implement
to the ground. NOTE: To improve access to the
drain plug and hydraulic system filter, the
mower deck should be removed from the
tractor.
• Clean the area around the transmission drain
plug and the oil fill plug to prevent debris from
entering the transmission. Refer to Figure 42
and Figure 44.
• Place a suitable container(s) beneath the front
of the transmission housing.
• Remove the oil fill plug to help vent the trans-
mission, then remove the drain plug and allow
the transmission oil to drain into the con-
tainer(s). Reinstall the drain plug after draining
the oil. Refer to Figure 42 and Figure 44.
TRANSMISSION
DRAIN PLUG
HYDRAULIC SYSTEM
OIL FILTER