Cooling System

- Water pump 1 in the engine circulates the coolant.
- The pressure resulting from the warming of the cooling system is regulated by a valve in radiator cap 2. Heat expansion causes excess coolant to flow into compensating tank 3. When the temperature falls, this surplus coolant is sucked back into the cooling system. This ensures that operating the vehicle at the specified coolant temperature will not result in a risk of malfunctions.

The coolant is cooled by the air stream and a radiator fan 4, which is controlled by a thermo-switch.
The lower the speed, the less the cooling effect. Dirty cooling fans also reduce the cooling effect.

Warning Danger of scalding During motorcycle operation, the coolant gets very hot and is under pressure.
- Do not remove the radiator cap, radiator hoses or other cooling system components when the engine is hot. Allow the engine and cooling system to cool down. In case of scalding, rinse immediately with lukewarm water.

Checking the coolant level

Warning Danger of poisoning Coolant is poisonous and a health hazard.
- Avoid contact between coolant and skin, eyes and clothing. If it gets into your eyes, rinse immediately with water and contact a doctor. Wash affected skin areas immediately with soap and water. If coolant is swallowed, contact a doctor immediately. Change clothes that have come into contact with coolants. Keep coolant out of the reach of children.

- Stand the motorcycle upright on a horizontal surface.
- Check the coolant level in the compensating tank 1.
- Check the coolant antifreeze.

- 25.... -45°C

If the coolant antifreeze does not meet specification:
- Correct coolant antifreeze.
- Check the coolant level in the compensating tank.

The coolant level must be between MIN and MAX.

If the coolant antifreeze does not meet specification:
- Correct coolant level.
Alternative 1
Coolant
Alternative 2
Coolant (mixed ready to use)
- Mount the cap of the compensating tank.

Draining the coolant

Warning Danger of scalding During motorcycle operation, the coolant gets very hot & is under pressure.
- Do not remove the radiator cap, radiator hoses or other cooling system components when the engine is hot. Allow the engine and cooling system to cool down. In case of scalding, rinse immediately with lukewarm water.

Warning Danger of poisoning Coolant is poisonous and a health hazard.
- Avoid contact between coolant and skin, eyes and clothing. If it gets into your eyes, rinse immediately with water and contact a doctor. Wash affected skin areas immediately with soap and water. If coolant is swallowed, contact a doctor immediately. Change clothes that have come into contact with coolants. Keep coolant out of the reach of children.

- Remove the front spoiler.
- Stand the motorcycle upright.
- Place a suitable container under the engine.
- Remove screw 1.
- Take off the radiator cap.
- Completely drain the coolant.
- Mount screw Ê with a new seal ring and tighten it.

Guideline
Plug, water pump drain hole	M6	8 Nm

Filling/bleeding the cooling system

Warning Danger of poisoning Coolant is poisonous and a health hazard.
- Avoid contact between coolant and skin, eyes and clothing. If it gets into your eyes, rinse immediately with water and contact a doctor. Wash affected skin areas immediately with soap and water. If coolant is swallowed, contact a doctor immediately. Change clothes that have come into contact with coolants. Keep coolant out of the reach of children.

- Remove radiator cap 1.
- Remove bleeder screw 2.
Tilt the vehicle slightly to the right.
- Pour in coolant until it emerges without bubbles at the vent hole, and then mount and tighten the bleeder screw immediately.
Alternative 1
- Coolant.
Alternative 2
- Coolant (mixed ready to use).
- Fill the radiator completely with coolant. Mount the radiator cap.
- Rest the vehicle on the side stand.

Warning Danger of poisoning Exhaust gases are poisonous and inhaling them may result in unconsciousness and/or death.
- When running the engine, always make sure there is sufficient ventilation, and do not start or run the engine in an enclosed space without an effective exhaust extraction system.

- Start the engine and let it run warm.
- Stop the engine and allow it to cool down.
- When the engine is cool, check the coolant level in the radiator and, if necessary, add coolant.
- Remove the cap of the compensating tank 3 and add coolant until the coolant level is up the MAX mark.
- Mount the cap of the compensating tank.
- Fit the front spoiler.