14. PERIODIC SERVICE
14-31
Lx410/450/490 Operator's Manual
■ Service the Cooling System
1. Drain the Cooling System
1. Park the tractor safely and securely.
• For details, see "7. Safe Practices for Parking the
Tractor" on page 1-7.
2. Shut off the engine.
3. Chock all the tires safely and securely.
4. Allow the engine to cool down for several
minutes.
5. Raise the hood.
6. Remove the radiator cap to speed up the draining
of the coolant.
• Loosen the radiator cap to the first stop.
• the preceding action releases excessive
pressure on the radiator
• Fully remove the radiator cap once the pressure
has been released completely.
7. Place a drain pan underneath the radiator
petcock hose.
8. Remove the radiator petcock.
9. Remove the radiator petcock hose from the strap.
10.Drain the coolant.
• Hold down the radiator petcock hose below the
radiator level until the coolant is completely
drained.
• Place the radiator petcock hose to the upright
position.
11.Install the radiator petcock hose to the strap.
12.Install the radiator petcock.
(A) Radiator cap
(B) Radiator petcock
(C) Strap
(D) Radiator petcock hose
10. Every 1000 Hours
Avoid injury!
● Always allow the radiator to cool down:
• the radiator is hot and can cause burns
• the build up pressure in the cooling system
can cause the coolant to spray out
explosively during removal of the radiator
cap
● Always shut off the engine.
● Allow the engine to cool down.
● Remove the radiator cap only when:
• the radiator and the engine are sufficiently
cooled down that can be touched with bare
hands
● When removing the radiator cap, always:
• loosen the radiator cap to the first stop
• the preceding action releases excessive
pressure on the radiator
• fully remove the radiator cap once the
pressure has been released completely
● For tractors equipped with a coolant reserve
tank:
• add coolant or water to reserve tank, not to
the radiator, for details, see "Check the
Cooling System" on page 14-14
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