Remove the tank vent line

Unlock the locking mechanism (1) of the left tank vent line.
Release and detach the tank vent line (2) from the tank vent valve.

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Unlock the locking mechanism (1) of the right tank vent line.
Release and detach the tank vent line (2) from the tank vent valve.

Courtesy of BMW OF NORTH AMERICA, INC.
Unlock locking mechanism (1) on the tank vent line.
Remove the tank vent line (2) .

Courtesy of BMW OF NORTH AMERICA, INC.