1000 series » How to drain the cooling system

Warnings! Discard the used coolant in a safe place and in accordance with local regulations.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 machine is on level ground.
2. Remove the filler cap of the coolant system.
3. Remove the brass drain plug from the side of the cylinder block (A) in order to drain the coolant. Ensure that the drain hole is not restricted.
4. 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. If a lubricating oil cooler/filter assembly (B) is fitted, this must also be drained and flushed. To do this disconnect the hoses (B1 and B2) at the to p of the cooler and flush the oil cooler through the outlet connection (B1) until clean water runs from the inlet (B2).
5. Flush the coolant system with clean water.

Caution: If the coolant system is to remain empty temporarily after it is flushed, 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 machine is moved.

6. Fit the hoses to the top of the cooler and tighten the clips.
7. Fit the drain plugs and the filler cap. Close the radiator tap or connect the radiator hose.