When he/she pours more petrol into the tank, the fuel level rises … (par 2)

What is the closest meaning to the underlined word?
Puts
Discussion:
When he/she pours more petrol into the tank, the fuel level rises and it pushes the float upwards. In return it disconnects to 
the electrical dontact and makes the red light switch off.
What is the communicatives purpose of the text?
To describe fuel warning light in general
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