114674_0512 4-5 REV B
The resulting symptoms in hydrostatic systems may be:
1. Noisy operation.
2. Lack of power or drive after short term operation.
3. High operation temperature and excessive expansion of
oil.
Before starting, make sure the transaxle is at the proper oil
level. If it is not, fill to the specifications outlined in this
manual.
The following procedures are performed with the vehicle
drive wheels off the ground.
1. Raise and block the mower up so the drive wheels are off
of the floor.
2. Chock the front tires.
3. With the bypass valve open and the engine running,
slowly move the H-Bar steering lever in both forward
and reverse directions (5 or 6 times). Figure 4-11
4. With the bypass valve closed and the engine running,
slowly move the H-Bar steering lever in both forward
and reverse directions (5 or 6 times). Check the oil level,
and add oil as required after stopping the engine.
5. It may be necessary to repeat Steps 3 and 4 until all the
air is completely purged from the system. When the
transaxle operates at normal noise levels and moves
smoothly forward and reverse at normal speeds, then the
transaxle is considered purged.
Tires
It is important for level mowing that the tires have the same
amount of air pressure. The recommended pressure are:
Drive wheels . . . . . . . . . . . . . . . . . . . . . 8-12 psi (55-83 KPa)
Gauge wheels. . . . . . . . . . . . . . . . . . . . . 8-12 psi (55-83 KPa)
Solid fill tires are not recommended for Hustler
®
TrimStar
mowers. On any machine, with solid filled tires, the warranty
claim will be denied.
Never work under the machine or attachment unless it is
safely supported with jack stands.
Make certain machine is secure when it is raised and
placed on the jack stands. The jack stands should not
allow the machine to move when the engine is running
and the drive wheels are rotating. Use only certified jack
stands. Use only appropriate jack stands, with a mini-
mum weight rating of 2000 pounds to block the unit up.
Use in pairs only. Follow the instructions supplied with
the vehicle stands.
Figure 4-11
Bypass valve rod
(shown in operating position)
Slot
Right transaxle shown
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