HUSTLER FasTrak SD Service Manual page 17

Filter
Figure 4-10
Screw
Figure 4-11
5. Install the new filter by hand, turn 3/4 to one full turn
after the filter gasket contacts the filter base surface.
6. Re-install the filter guard with three 1/4" screws. Torque
the screws to 65 in.-lbs. each. Figure 4-11
7. Repeat steps 2 - 6 for the opposite side transaxle.
8. Drain oil filters of all free flowing oil prior to disposal.
Place used oil in appropriate containers.
9. IMPORTANT: Remove the top port plug from both
transaxles prior to filling with oil. This will allow the
transaxles to vent during oil fill. Figure 4-12
10. Remove the cap from the transaxle's expansion tank.
11. Fill with 20W50 motor oil until oil just appears at the
bottom of each transaxles top port (approximately 2 qts.
per transaxle). Install the top port plug into each
transaxle. Torque plugs to 180 in. lbs. Clean up any oil
that leaked from the ports. Figure 4-12
12. Continue to fill the transaxles through the expansion tank
until the "Full Cold" line is reached on the expansion
tank.
13. Re-install the expansion tank cap by hand. Be careful not
to overtighten.
14. Proceed to the purge procedure.
114242
IMPORTANT: Purging procedures must be followed after
changing the oil and filter. Refer to Purging Procedure section
for detailed information.
When washing the mower, direct the spray away (espe-
cially if using a power washer) from the transaxle's seals
to prevent water intrusion and to ensure component per-
formance.
Screw
Filter
guard
Transaxle filter
Purging procedure
Due to the affects air has on efficiency in hydrostatic drive
applications, it is critical that it is purged from the system.
Air creates inefficiency because its compression and expan-
sion rate is higher than that of the oil approved for use in hydro-
static drive systems.
These purge procedures should be implemented any time a
hydrostatic system has been opened to facilitate maintenance or
4-5
Top port plug
Figure 4-12
WARNING
Figure 4-13
REV B