New 1000 Serie » How to drain the cooling system

Warning! Do not drain the coolant while the engine is still hot and the system is under pressure because dangerous hot coolant can be discharged.

1. Ensure that the vehicle or machine is on level ground.
2. Remove the filler cap of the coolant system.

Caution: To prevent frost damage, ensure that all of the coolant is removed from the engine. This is important if the system is drained after it has been flushed with water, or if an antifreeze solution too weak to protect the system from frost has been used.

3. For engines fitted with intercoolers: Open the vent screw (A1) for vertical intercoolers or (B1) for horizontal intercoolers. This will ensure that all of the coolant is drained from the intercooler.
4. Remove the drain plug (C or D) from the side of the cylinder block in order to drain the engine. Ensure that the drain hole is not restricted.
5. Open the tap or remove the drain plug at the bottom of the radiator in order to drain the radiator. If the radiator does not have a tap or drain plug, disconnect the hose at the bottom of the radiator.
6. If a lubricating oil cooler is fitted to the filter head instead of the cylinder block, then this must also be drained and flushed. To do this, disconnect the hoses (E1 and E2) at the top of the cooler and flush the oil cooler through the outlet connection (E1) until clean water flows from the inlet (E2).

Caution: If the cooling system is to remain empty temporarily after it is flushed with clean water, drain the oil cooler and fill it with 165 ml (1/3 pint) of antifreeze. This will protect the oil cooler against frost if any clean water drains down from the water jacket when the vehicle is moved.

7. Flush the coolant system with clean water.
8. Fit the hoses to the top of the cooler and tighten the clips.
9. Fit the drain plugs and the filler cap. Close the radiator tap or connect the radiator hose.