1. Place the vehicle on a pit or lift.
2. Disconnect the wire from the terminal «minus» battery.
3. Remove the crankcase and front engine mudguard (see «Removal and installation of mudguards and engine crankcase protection»).
4. Drain the liquid from the engine cooling system (see «Coolant replacement»).
USEFUL ADVICE: When replacing the sensor, the coolant may not be drained: after removing the sensor, plug the hole with your finger or a plug - the loss of coolant will be minimal.
5. Press the clamp of the sensor wiring harness block and disconnect the block from the sensor.
6. Pull the sensor's spring stop out of the slots.
7. Slightly rocking, pull the sensor and, overcoming the resistance of the rubber sealing ring (the sensor housing is installed with an interference fit in the tank opening), remove it from the hole in the radiator reservoir.
NOTE: Please note that the sensor is sealed with a rubber ring. Replace the ring with a new one each time the sensor is removed.
8. Install the coolant temperature sensor in reverse order.
9. Fill in coolant.