Maintenance
Checking the Hydraulic Oil
Level
Service Interval: Before each use or daily
Check expansion tank and if necessary add MOBIL 1
15W-50 synthetic motor oil to the FULL COLD line
Figure 29
1. Engine 2. Expansion tank
Change the Hydraulic
System Filter
Service Interval: After the rst 200 hours
Note: Use only MOBIL 1 15W-50 Synthetic motor
oil.
1. Stop engine, wait for all moving parts to stop, and
allow engine to cool. Remove key and engage
parking brake.
2. Locate the two lters under the transmissions.
Remove lter guards.
3. Carefully clean area around lters. It is important
that no dirt or contamination enter hydraulic
system.
4. Unscrew lters to remove and allow oil to drain
from drive system.
Important: Before reinstalling new lters,
apply a thin coat of oil on the surface of the
lters rubber seal.
Turn the lters clockwise until rubber seal
contacts the lter adapter then tighten the lter
an additional 3/4 to 1 full turn.
5. Remove the vent plug on each transmission and
ll through expansion reservoir, when oil comes
out of vent reinstall plug. Torque plugs to 180
in-lb (244 N-m). Continue to add oil until it
reaches the FULL COLD line on the expansion
reservoir.
Figure 30
1. Oil lter 3. Left rear tire
2. Vent plug
6. Raise the rear of machine up and support with
jack stands (or equivalent support) just high
enough to allow drive wheels to turn freely.
7. Start engine and move throttle control ahead to
1/2 throttle position. Disengage parking brake.
A. With the bypass valve open and the engine
running, slowly move the directional control
in both forward and reverse (5 or 6 times).
B. 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 the engine.
C. It may be necessary to repeat steps A and
B 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.
Do Not change hydraulic system oil (except for what
can be drained when changing lter), unless it is felt
the oil has been contaminated or been extremely hot.
Changing oil unnecessarily could damage hydraulic
system by introducing contaminates into the system.
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