Not for
Reproduction
32
13. Make sure that the transaxle release levers are in the
engaged (run) position. See
Pushing the Unit by Hand
.
14. Start the engine and allow the engine a few moments to
warm up, position the throttle in the FAST position and
allow it to run for thirty (30) seconds.
15. Turn the ignition switch to OFF to stop the engine.
16. Using the hand pump add more oil into the system until
the oil level reaches the "FULL COLD" mark on the
hydraulic oil expansion tank.
17. Rotate the lever (B, Figure 34)
clockwise
to the OFF
position. Rotate the transaxle service valve
counter-
clockwise
to lock the lever in place.
18. Perform steps #4 through #8 on the right hand transaxle.
19. Rotate the transaxle service lock (A, Figure 34)
counter-
clockwise
to release the lever. Rotate the
lever
clockwise
to the position labelled as "RH" on the
decal as referenced as "D" in Figure 34.
20. Perform steps #12 though #16 to add oil to the right hand
transaxle and lines.
21. Rotate the lever
counter-clockwise
to the OFF position.
Rotate the transaxle service valve
clockwise
to lock the
lever in place.
22. Disconnect the hose of the hand pump from the transaxle
selector valve and install the dust cap (A, Figure 33) onto
the port.
23. Re-install the foot guard to the unit.
24. Perform the
Purging the Air from the Hydraulic
System
procedure.
25. Keep an eye on the oil level in the transmission oil
expansion tanks as it will be necessary to add oil into
the tanks as the unit is run for the next few days. When
adding more oil to the system, you can add it by removing
the caps from the transmission oil expansion tanks and
adding oil until it reaches the "FULL COLD" mark and
then install the cap.
Purging the Air from the Hydraulic
System
Due to the effects air has on efficiency in hydraulic drive
systems, it is critical that it be purged from the system.
These purge procedures should be implemented any time a
hydraulic system has been opened to facilitate maintenance
or any additional oil has been added to the system.
The resulting symptoms of air in the hydraulic system may be:
• Noisy operation.
• Lack of power or drive after short term operation.
• High operation temperature and excessive expansion of
oil.
Before starting, make sure the transaxles/transmissions are
at the proper oil levels. If it is not, fill to the specifications
outlined in the
Check / Fill Transmission Oil Level
procedure.
Purging Air from the Hydraulic System:
1. Chock the front wheels to prevent the machine from
rolling. Raise the rear of the machine so that the vehicle’s
rear tires do not contact the ground. Position jack stands
under the rear of the machine to secure it.
2. Open the transaxle’s bypass valves (see
Pushing the
Unit by Hand
for the location and function of the bypass
valves), start the engine, release the parking brake, and
slowly move the unit's control levers in both forward and
reverse directions (5 to 6 times), as air is purged from the
unit, the oil level will drop.
3. Depress the neutral return pedals to return the
transmissions to neutral, stop the engine, and engage the
parking brake.
4. Close the transaxle’s bypass valves, start the engine,
release the parking brake, and slowly move the unit's
control levers in both forward and reverse directions (5
to 6 times), as air is purged from the unit, the oil level will
drop.
5. Stop the engine. Remove the jack stands from
underneath the machine.
6. Repeat the process detailed above but with the unit's
drive wheels on the ground. The procedure should be
performed in an area free of any objects or bystanders.
It may be necessary to repeat the process detailed above
until all the air is completely purged from the system. When
the transaxles/transmissions operate at normal noise levels
and move smoothly forward and reverse at normal speeds,
then the transaxles/transmissions are considered purged.
Checking Tire Pressures
Tire pressure should be checked periodically, and maintained
at the levels shown in the Specifications chart. Note that
these pressures may differ slightly from the "Max Inflation"
stamped on the side-wall of the tires. The pressures shown
provide proper traction and extend tire life.
Lubrication
Lubricate the unit at the location shown in the following
figures as well as the lubrication points listed below.
Grease
(
):
• front caster wheel axles and yokes.
• deck lift pivot blocks.
• deck lift lever pivot block.
• parking brake lever shaft.
• lower parking brake shaft.
• mower deck hanger linkages.
• mower deck spindles.
Use grease fittings when present. Disassemble parts to apply
grease to moving parts when grease fittings are not installed.
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