KTM RC 390 2020 Owner's Manual page 45

Note
Environmental hazard Improper handling of fuel is a danger to the environment.
–
Do not allow fuel to enter the groundwater, the soil, or the sewage system.
K00700-10
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1
Lift cover of the fuel tank filler cap and insert the ignition
key into the lock.
Note
Danger of damage The ignition key may break if overloaded.
Damaged ignition keys must be replaced.
–
Push down on the fuel tank filler cap to take pressure off
the ignition key.
–
Turn the ignition key 90° clockwise.
–
Lift the fuel tank filler cap.
–
Remove the ignition key.
CONTROLS 6
43