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HYDRAULIC FLUID
Check Hydraulic Fluid Level
See Figure 11.
Check the system with the unit cold and
parked on a flat, level surface. Then run the
unit for about one minute and recheck the
levels.
Add Hydraulic Fluid
1. Remove the cap from the expansion tank.
2. Fill the expansion tank with 15W-50
synthetic motor oil (Gravely
p/n 00057100) or equivalent until oil level
reaches the cold fill line on the tank.
3. Install the expansion tank cap and then
purge the system. See Purging the
Hydraulic System on page 25.
Change Hydraulic Fluid and Filter
See Figure 12.
NOTICE: Change hydraulic fluid and filter
after the first 75 hours of operation and then
every 400 hours. Use 15W-50 synthetic
motor oil (Gravely p/n 00057100) or
equivalent.
1. Place container under oil filter to catch oil.
2. Remove the filter guard and oil filter from
the transaxle.
3. Remove the oil drain plug or fitting from
the inlet port and allow the transaxle to
drain completely.
4. Clean the filter mounting surface and
then lubricate rubber gasket on new oil
filter with clean hydraulic oil.
5. Spin new oil filter onto filter housing until it
makes contact. Tighten oil filter another
3/4 turn.
6. Install the filter guards removed in step 2.
Tighten the mounting screws to 5.4 lbf-ft
(7.3 N•m).
7. Fill with 15W-50 synthetic motor oil
(Gravely p/n 00057100) or equivalent
until oil appears at the bottom of the drain
plug (about 2 quarts per transaxle). Install
the drain plug and tighten to 15 lbf-ft
(20.3 N•m).
WARNING: HYDRAULIC FLUID
can result in severe burns. Fluid in
hydraulic system can penetrate
skin and result in serious injury or
death.
Be sure to stop the engine before
doing any work on hydraulic parts.
Keep body and hands away from
pin holes or nozzles which expel
hydraulic fluid when under
pressure. Use paper or
cardboard, not hands, to search
for leaks.
Ensure all hydraulic fluid
connections are tight and all
hydraulic hoses and lines are in
good condition before applying
pressure to system.
FOREIGN FLUID INJECTED
INTO BODY can result in
gangrene. Fluid must be surgically
removed within a few hours by a
doctor familiar with this form of
injury.
Figure 10
1. Oil Fill/Dipstick
2. Oil Drain Hose
1
2
Figure 11
1. Cold Fill Indicator Mark
1