Ariens GRAVELY Pro-Turn 400 Series Dealer/Owner/Operator Manual page 29

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1. Oil Filter
2. Filter Cover/Drain Plug
3. O-Ring
Figure 14
Purging the Hydraulic System
WARNING: This adjustment
requires operating the engine.
Use extreme care to avoid
contact with moving parts and hot
surfaces. Be sure rear of unit is
well supported and secure before
starting engine.
NOTE: Purge the system of air any time the
transaxle has been opened for maintenance
or when oil has been added to the system.
1. Make sure the transaxles are filled to the
proper oil level.
2. With the unit up to and facing a wall, jack
up the unit so that both drive wheels are
off the ground.
3. Disengage the parking brake and put the
transaxle bypass valves in the neutral
position. See To Push The Unit on
page 23.
4. Start the engine and slowly move the
steering levers in forward and reverse
five or six times. The oil level will drop.
5. Stop the engine and move the transaxle
bypass valves to the drive position. See
To Push The Unit on page 23.
6. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
7. Stop the engine, check the hydraulic oil
level and add oil as needed.
8. Repeat steps 3 – 7 until the transaxles
operate smoothly in forward and reverse
at normal speeds without excessive
noise.
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COOLING SYSTEM
Checking Coolant Level
(Figure 15)
WARNING: To avoid personal
injury DO NOT remove radiator
cap when engine is hot. Check
coolant level at coolant reservoir,
not at radiator.
Check coolant level when engine is cold.
Check coolant level at overflow reservoir.
1. Check coolant reservoir. Coolant should
be between the low and full marks with
engine cold.
2. If coolant is below the low mark, remove
cap, and add coolant to the full mark.
Refer to Engine Manual for the correct
type of coolant.
1. Operating Range
2. Full
3. Low
CHANGING COOLANT
WARNING: To avoid personal
injury DO NOT drain radiator or
engine block when engine is hot.
Allow to cool before servicing.
Drain Coolant System
1. Stop engine and allow to cool.
EN - 29
Figure 15
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