Figure 19
Change Hydraulic Oil and Filter
1. Operate unit for a few minutes to warm
hydraulic oil.
2. Stop engine, remove key and wait for all
moving parts to stop and for hot parts to
cool.
3. Position container under oil filter to catch
used oil.
4. Remove filter guard and oil filter from
transaxle. (See
Figure 20.)
5. Remove the vent/fill plug from the fill port
and allow transaxle to drain completely.
6. Wipe filter-mounting surface clean.
7. Lubricate rubber gasket on new oil filter with
clean hydraulic oil.
8. Spin filter onto filter housing until it makes
contact, and then turn filter 3/4 turn to
tighten.
9. Reinstall filter guard and torque to 7.3 N•m
(65 lb-in). DO NOT overtighten.
10. Add 15W-50 synthetic motor oil until oil
appears at the bottom of the fill port (1892.7
mL [64 fl.oz.] per transaxle).
11. Reinstall the vent/fill plug and torque to
20.3 N•m (180 lb-ft).
12. Add hydraulic oil to expansion tank until oil
reaches cold fill indicator mark. See
Check
Hydraulic Oil Level, step 4.
13. Repeat steps 3 – 12 for other transaxle.
14. Purge hydraulic system. See Purge
Hydraulic System on page 22.
Figure 20
Purge Hydraulic System
WARNING: Avoid Injury
This adjustment requires
operating the
engine. Use
extreme care to avoid
contact with moving parts and hot
surfaces. Be sure rear of unit is
well
supported and secure before starting
engine.
Purge air from hydraulic system after draining
oil or
changing the filter.
1. Support unit so tracks are not touching the
ground.
2. Release parking brake.
3. Bypass transaxles. See Move Unit
Manually
on page 15.
4. Start the engine and slowly move steering
joystick forward and backward 5 or 6 times.
5. Stop engine.
6. Turn transaxle bypass valves to operating
position. See Move Unit Manually on
page 15.
7. Start engine.
8. Slowly move steering joystick forward and
backward 5 or 6 times.
9. Stop engine, lower unit to ground and
check
oil level. Add oil if needed.
10. Repeat steps 1 – 10 until transaxles
operate
smoothly in forward and reverse
at normal
speed without excessive noise.
22
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