
Maintenance
-64-
5
1. Open engine hood.
2. Remove lower rear cover.
3. Have an appropriate oil drain pan.
4. Remove filler cap.
5. Remove drain plug to drain HST oil.
Changing - Models without charge-pump
• HST system cannot be fully drained due to
its design.
• Do not operate drive pedal or drive lever
with HST oil drained. Doing so lets air
into the circuit, necessitating to bleed the
circuit.
NOTE
Release Lever
Drain Plug
5347M-0507-060E
6. Reinstall drain plug.
7. Fill fresh oil to level.
8. Reinstall filler cap.
9. Reinstall lower rear cover and close engine hood.
10. Start engine and run it for a while. Stop it and check HST oil level.
11. Restart engine and drive machine back-and-forth from standstill several times.
12. Check oil level. If it is lower, fill.
13. Perform 10-12 until oil level stabilizes.
14. Check if there is no oil leak.
15. After changing HST oil, check oil level every 10-30 minutes of use for a while and fill as
necessesary.