23
LAWNAIRE ZTS
MAINTENANCE
TRANSAXLE & HYDRAULIC OIL
Do not perform engine maintenance without the en-
gine off and spark plug wires disconnected.
- Check cold.
- Add 20w50 oil if necessary to the indicated level.
- Do not overfill. When the oil warms up it ex
-
pands. If overfilled cold, the oil may overflow at
operating temperature.
Change the transaxle / hydraulic lift circuit oil
after the first 75-100 hours, then every 200 hours
or yearly.
It is essential that the exterior of the transaxle be free
of debris, prior to fluid maintenance.
1. Raise the machine on the built in jack stands.
Remove the protective filter cover over the
hydraulic oil filter on each transaxle. Put an oil
drain pan under the transaxle hydraulic oil filters.
Remove the filters
A
. This will drain the oil from
the transaxles. With another drain pan, drain the
oil from the reservoir through the drain
D
on the
lower left side if the reservoir. Remove the lift
circuit filter. Dispose of the used oil and filters
properly.
2. Apply pipe compound to the reservoir drain plug
and reinstall in the reservoir. Oil the gaskets of
the new transaxle hydraulic oil filters and install
on the transaxles. Tighten 3/4 to 1 turn past
the point where the gasket contacts the mount-
ing surface. Reinstall the filter covers. Oil the
gasket on ta new lift circuit filter and install on the
filter head. Tighten 3/4 to 1 turn past the point
where the gasket contacts the filter head. NOTE:
The transaxle filters are smaller then the lift cir
-
cuit filter.
3. Fill the reservoir with 20w50 (15w50 is accept-
able) motor oil to the top. (Approximately 4 qts.).
4. Have more oil ready. Open the transaxle bypass
valves. Keep the machine transaxle controls in
neutral. Crack the lift pump outlet fitting, start
the machine. Place some rags under the fitting.
When oil appears, tighten the fitting. The lift
circuit pump will fill the transaxles. Add oil as
the level drops below the "FULL COLD" mark.
Run the machine and keep adding oil until the oil
level stabilizes. If the controls were not moved
out of neutral, purging should not be required.
Drive the machine and check oil level. Top off as
necessary.
5. If the transaxles are noisy or jerky, purge the
transaxles, following the purging procedures.
See
Purging Transaxles Page 9
.
