Cub Cadet PRO X 636 Manuel De L'opérateur page 23

8. Add new hydrostatic transmission oil. Refer to Adding Hydrostatic Transmission
Oil in this procedure.
Adding Hydrostatic Transmission Oil
1. Loosen the two star knobs securing the leg pad to the mower.
2. Remove the leg pad from the mower.
3. Remove the rear panel from the mower. Refer to Removing/Installing the
Rear Panel.
4. Remove the hydrostatic transmission oil reservoir cap (a) (Figure 28).
5. Mowers with 48, 54 or 60 inch Mowing Decks Only: Insert a funnel into the
reservoir (b) (Figure 28).
6. Mowers with 36 inch Mowing Decks Only:
a. Remove the black cap (c) from the control panel by reaching under the panel
and squeezing the two tabs and pushing up (Figure 28).
b. Insert a long necked funnel through the control panel and into the hydrostatic
transmission oil reservoir.
7. Add hydrostatic transmission oil until the level is even with the upper reservoir
mounting bolts (Figure 26 on page 22).
8. Replace the hydrostatic transmission oil reservoir cap (and black cap if removed)
and securely tighten.
9. Purge air from the hydrostatic transmission. Refer to Purging Air from the
Hydrostatic Transmission in this procedure.
10. Reinstall the rear panel. Refer to Removing/Installing the Rear Panel.
11. Using the two star knobs, reinstall the leg pad.
(a)
(b)
PRODUCT CARE
(c)
(a)
(b)
(d)
Figure 27
(c)
Figure 28
Purging Air from the Hydrostatic Transmission
Due to the effects air has on efficiency in hydrostatic drive applications, it is critical
that air is removed or purged from the system.
IMPORTANT! These purge procedures must be preformed any time a hydrostatic
system has been opened for maintenance or repair, or if any additional oil has
been added to the system.
Air creates inefficiency because it has compression and expansion rates that are
higher than that of oil.
Air trapped in the oil may cause the following symptoms:
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 reservoir is at the proper oil level. Refer to Checking
the Hydrostatic Transmission Oil Level in this section.
IMPORTANT! The following procedures should be performed with the mower
drive wheels off the ground, then repeated under normal operating conditions.
Certain procedures require the mower engine to be operated and the vehicle
to be raised off of the ground. To prevent possible injury to the servicing
technician and/or bystanders, ensure the vehicle is properly secured.
1. With the bypass valves open and the engine running, slowly move the drive
control levers in both forward and reverse directions (5 to 6 times). As air is
purged from the unit, the oil level in the reservoir will drop.
2. With the bypass valve closed and the engine running, slowly move the directional
control in both forward and reverse directions (5 to 6 times). Check the oil level,
and add oil as required after stopping engine.
3. It may be necessary to repeat STEPS 1 and 2 until all the air is completely purged
from the system. When the wheels move forward and reverse at normal speed
and the reservoir oil remains at a constant level, purging is complete.
MOWER STORAGE
If your mower is not going to be operated for an extended period of time (30 days
to approximately 6 months), the mower should be prepared for storage. Store the
mower in a dry and protected location. If stored outside, cover the mower (including
the tires) to protect it from the elements. The procedures outlined below should be
performed whenever the mower is placed in storage.
1. Change the engine oil and filter following the instructions provided in the Engine
Operator's Manual packed with this manual.
Never store the mower with fuel in the tank indoors or in poorly ventilated
enclosures, where fuel fumes may reach an open flame, spark or pilot light
as on a furnace, water heater, clothes dryer, etc.
2. If storing the mower for 30 days or more:
a. To prevent gum deposits from forming inside the engine's carburetor and
causing possible malfunction of the engine, the fuel system must be either
completely emptied, or the gasoline must be treated with a stabilizer to
prevent deterioration.
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WARNING
WARNING