Cub Cadet PRO X 636 Manuel De L'opérateur page 22

IMPORTANT! The mower is equipped with two hydrostatic transmissions. Each
transmission is equipped with a bypass valve that MUST be opened before manually
moving the mower.
IMPORTANT! Unless purging air from the hydrostatic transmission oil system, the
bypass valves MUST be closed before operating the mower.
1. Loosen the two star knobs (a) securing the leg pad (b) to the mower (Figure 25).
2. Remove the leg pad from the mower.
3. Remove the rear panel from the mower. Refer to Removing/Installing the
Rear Panel.
IMPORTANT! DO NOT open the bypass valves more than a maximum of
two turns.
4. Locate the hydrostatic transmissions and open the two bypass valves (c) a
maximum of two turns (Figure 25).
5. Reinstall the rear panel. Refer to Removing/Installing the Rear Panel.
6. Using the two star knobs, reinstall the leg pad.
7. Reverse STEPS 1-6 to close the two bypass valves.
(a)
(b)
HYDROSTATIC TRANSMISSION OIL
If the mower has been recently run, the engine, muffler and surrounding
metal surfaces will be hot and can cause burns to the skin. Let the engine
cool for at least five minutes. Exercise caution to avoid burns.
NOTE: This procedure contains the following instructions for checking, changing and
adding hydrostatic transmission oil:
• Checking the Hydrostatic Transmission Oil Level
• Changing the Hydrostatic Transmission Oil
• Adding Hydrostatic Transmission Oil
• Purging Air from the Hydrostatic Transmission
PRODUCT CARE
(a)
(c)
Figure 25
WARNING
Checking the Hydrostatic Transmission Oil Level
1. Locate the hydrostatic transmission oil reservoir (a) behind the engine under the
control panel (Figure 26).
2. Ensure the hydrostatic transmission oil reservoir level is just above the upper
reservoir mounting bolts (b) as shown in Figure 26.
NOTE: The hydrostatic transmission oil level must always stay above the hose
fittings on the rear of the tank, otherwise air may be introduced into the system.
3. If necessary, add hydrostatic transmission oil. Refer to Adding Hydrostatic
Transmission Oil in this procedure.
(a)
Changing the Hydrostatic Transmission Oil/Oil Filter
If the mower has been recently run, the engine, muffler and surrounding
metal surfaces will be hot and can cause burns to the skin. Let the engine
cool for at least five minutes. Exercise caution to avoid burns.
NOTE: Use care when changing the hydrostatic transmission oil and oil filter. Do not
allow oil to drip onto the hydrostatic transmission oil pumps.
1. Place a suitable container on the left side of the mower deck as close as possible
to the oil filter.
2. Loosen the hose clamp (a) securing the transmission oil hose (b) to the
transmission oil filter assembly (c) (Figure 27 on page 23).
3. Position a funnel under the transmission oil filter assembly so that the funnel will
empty into the container positioned in STEP 1.
4. Disconnect the transmission oil hose from the transmission oil filter assembly and
allow the hydrostatic transmission oil to drain into the funnel.
5. If necessary, perform the following to replace the oil filter (Figure 27 on
page 23):
a. Remove the existing oil filter (d) from the transmission oil filter assembly (c).
b. Apply a light amount of oil to the filter gasket.
c. Install the new oil filter and tighten 3/4 to 1 turn after gasket contacts
transmission oil filter assembly base.
6. Reconnect the transmission oil hose to the transmission oil filter assembly and
secure hose using the hose clamp loosened in STEP 2.
7. Tighten the hose clamp (a) securing the transmission oil hose (b) to the
transmission oil filter assembly (c) (Figure 27 on page 23).
22
Hydrostatic Transmission Oil
Fill Level
(b)
Figure 26
WARNING