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MAINTENANCE
q Soon after the machine has been stopped the coolant is very hot and under pressure and it may cause
serious burns; let the engine cool down until it reaches approximately 40–45°C before changing the
coolant.
q Slowly loosen the radiator cap, in order to release any residual pressure.
q Oils, filters, the coolant and the battery are considered special waste and must be collected and
disposed of according to the regulations in force.
The coolant is already diluted with distilled water. Check the density with a coolant tester.
Prepare a container with a capacity greater than the amount of coolant.
Prepare a water hose for cleaning.
1. Open the radiator cover. (See "RADIATOR COVER (3-
33)").
2. Check that the cooling water temperature has decreased
enough to allow the radiator cap (1) to be unscrewed to the
stop in order to relieve the pressure.
3. Press the radiator cap (1), unscrew until it stops and
remove it.
4. Open the radiator drain valve (2), remove the drain plug (3)
on the engine block and let the fluid flow out, gathering it in
a container with suitable capacity.
5. Close the discharge valve (2), replace the cap (3) on the
engine block and fill the radiator with clean water. Start the
engine and let it idle.
When the temperature rises above 90° C leave the engine
running for 10 minutes.
6. Stop the engine, then open the discharge valve (2) and
remove the drain plug (3) to drain the water.
7. Close the discharge valve (2) and the plug (3) and fill the
radiator with new coolant.
8. Start the engine and let it run at high idling speed for a few
minutes; check the level again and top up before putting
back the upper cap (1).
WARNING
WEAM014500
MAINTENANCE PROCEDURES
4-67
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