I take it you mean the direction indicator side repeater just above and behind the front wheel?
Push the light unit to one side, to free its retaining clips, and then ease it out from the front wing.
Rotate the bulbholder anti-clockwise and free it from the rear of the light. The bulb is of the capless (push-fit) type, and can be removed by simply pulling it out of the holder.
Refitting is a reversal of the removal procedure.
ChicksFan
July 2013