Caution: Drain the coolant when the engine is cold.
Unscrew the tank cap to remove air bubbles.
Open the bleed plugs (1) located on the coolant outlet block and the heater pipe.
Note: Place a piece of hose over the drain hole to prevent liquid from splashing out of the system.
Disconnect the lower hose (2) from the radiator.
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Drain the coolant from the engine by removing the plug (3) located under the rigid tube that runs from the coolant pump to the coolant outlet block (if necessary, use an extension, universal joint and 8.0 mm square socket). Close the drain hole with a plug.