SERVICE
Service - 36
10.
If hydraulic filter is being changed with the oil,
proceed to Changing Hydraulic Oil Filter sec-
tion before completing the remaining steps in
this section.
11. Clean up any spilled oil and dispose of oil and
filter in accordance with local laws.
12.
CAUTION
Oil is hazardous to the environment. Drain oil into
an approved container and dispose of used oil in
accordance with local laws.
Reinstall the front transaxle skid plate onto the
power unit. Torque bolts to 31 ft-lbs (42 Nm).
13. Add HydroTorq XL synthetic hydraulic oil to the
hydraulic oil tank until the oil level is centered
between the low and full marks on the oil tank.
14. Start the power unit and let it run at low idle
engine speed for several minutes. Turn the steer-
ing wheel to the left and right a couple of times to
purge any trapped air out of the hydraulic system.
15.
Shut off the power unit engine and allow the
power unit to sit for a minimum of five minutes.
16. Check the hydraulic oil level and add HydroTorq
XL synthetic hydraulic oil, if necessary. Refer to the
manual section for checking hydraulic oil level.
Changing Rear Transaxle Differential Oil
1. Remove the rear transaxle skid plate from the
power unit.
2. Place a drain pan (minimum 4 quart / 3.8 liter)
under the rear axle drain.
3. Remove the drain plug (A) from front of the rear
transaxle and allow the hydraulic oil to drain
from the transaxle.
A
4. Remove the plug (B) on the right side of the
transaxle to allow venting.
5.
B
C
Clean the drain plug, reinstall into the rear trans-
axle, and torque to 22 ft-lbs (30 Nm).
6.
The rear transaxle can be filled through either
the port (B) on the right side of the transaxle or
by removing the vent plug (C) from the top of the
transaxle, using either a funnel with a flexible
spout or a funnel inserted into a piece of 7/16”
outside diameter flexible tubing.
7. Add HydroTorq XL synthetic hydraulic oil
(approximately 3 qt / 2.8 L) to the rear transaxle
until level with the bottom of the side port (B).
8. Reinstall the side plug and the top vent plug (if
removed) into the rear transaxle and torque to
22 ft-lbs (30 Nm).
9. Clean up any spilled oil and dispose of oil and
filter in accordance with local laws.
10.
CAUTION
Oil is hazardous to the environment. Drain oil into
an approved container and dispose of used oil in
accordance with local laws.
Reinstall the rear transaxle skid plate onto the
power unit. Torque bolts to 210 in-lbs (24 Nm).
Checking Engine RPM
Check engine RPM when engine is warmed up and
not under load. Observe tachometer:
• Low idle speed = 1625 ±25 RPM
• High idle speed = 2825 ±25 RPM
If engine RPM is incorrect, contact your local Ven-
trac dealer.
