Remove the intake air pipe.
Remove the fasteners securing the intake air silencer to the oil tank and retainer.
Carefully disconnect the intake air silencer from the throttle flap stub and secure the silencer to the frame with a cable tie.
Disconnect the plug of fuel injector (1).
Use a hose clamp, BMW # 13 3 010, to close off fuel line (3).
Slacken the hose clip securing the fuel line and disconnect the line from the throttle flap stub.
Remove spring clip (2).
Remove the fasteners for the fuel-injector holder (arrows).
Remove the fuel-injector holder complete with fuel injector.
Disconnect the fuel injector from the fuel-injector holder.
Installation is the reverse of the removal procedure: pay particular attention to the following.
Note: Fit new O-rings when reinstalling a used fuel injector.
Grease O-rings lightly.
Install the fuel injector in the fuel-injector holder with the lug on the injector (arrow) in the groove in the holder.