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Section 5: Maintenance & Lubrication
ZSR54, & ZSR60 Accu-Z Razor
®
Zero Turn Mowers 357-344M
Table of Contents
12/15/15
9. Remove top port plug (#4). This will allow the
transaxles to vent during oil fill.
10. Fill transaxle with oil by adding oil to the expansion
tank (#7) until oil appears at the top port opening
(approximately 2 qts.). See page 50 for transaxle oil
specifications.
11. Install top port plug (#4) and tighten to 180 in-lbs.
12. Continue to add oil to the expansion tank until oil
reaches the full cold line (approximately 1/2" up from
the bottom of the tank).
13. Reinstall expansion tank cap (#7) by hand. Be
careful to not over-tighten.
14. Wipe off all excess oil. A degreaser may be needed to
remove excess oil.
15. Repeat steps 1 to 14 for the right side.
Transaxle Purging Procedures
It is critical that air is purged from the hydrostatic drive
system to keep it efficient. This is because compression
and expansion rate of air is higher than that of oil.
This purge procedure should be implemented any time
the hydrostatic system has been opened to facilitate
maintenance or after the oil has been changed.
Symptoms of a hydrostatic system that has not been
purged may be:
1. Noisy operation.
2. Lack of power after short term operation.
3. High operation temperature and excessive
expansion of oil.
Refer to Figure 5-11:
Before purging system, make sure fill tubes (#10) are full
of oil and expansion tanks (#11) are filled to the cold full
line. Squeeze all air from fill tubes and add oil if
expansion tanks are low. See page 50 for transaxle oil
specifications. The following procedures are best
performed with mower drive wheels off the ground and
then repeated under normal operating conditions. If this
is not possible, the procedure should be performed in an
open area free of any objects or bystanders.
1. Open both transaxle bypass valves by pulling out on
the bypass valve rods (#13) and lifting them into the
slot to lock them in position. Bypass valve rods are
located at the rear of the engine platform.
2. Start the engine and place both control levers in
neutral. Slowly move the control levers completely
forward and reverse 5 to 6 times.
NOTE: The fill tube (#5) should be hand squeezed
several times to burp out air and to drain oil from the
expansion tank into the tube. Be careful not to
damage the tube while squeezing it. Use a
protective cloth wrapped around the tube if using a
tool to squeeze such as a pair of pliers.
Left Transaxle (View of Oil Filter)
Figure 5-10
Left Transaxle (Inboard View)
Figure 5-11
3. Close both bypass valves by pulling back on the rods,
lowering them down and slowly releasing them to
allow the springs to pull back on the rods.
4. With engine running and control levers in neutral,
slowly move levers forward and reverse 5 to 6 times.
5. Stop engine and check fill tubes (#10) and expansion
tanks (#11). Squeeze all air from fill tubes and add oil
if expansion tanks are low.
6. It may be necessary to repeat Steps 1 to 5 until all air
is completely purged from the system and the
transaxle operates at normal noise levels and travels
at normal speeds.
27804
27805
IMPORTANT: The transaxle is considered purged
when transaxles are at the proper oil level, operate
at normal noise levels, oil temperatures are not
excessively high, and mower does not lack power.