Unfortunately these washer jets cannot be adjusted in the normal way, and this is an issue commonly experienced by owners. Because the jets cannot be adjusted an inaccurate spray pattern is usually due to a blockage, so we would suggest disconnecting the feed lines and flushing out the system. It may also be possible to adjust the entire jet in its mounting to redirect the spray. Alternatively some owners have replaced the standard washer jets with those from the older Citroen Xantia, which are the adjustable type.