Originally Posted by C_Plunkett
The service manual says to use a safety pin to adjust the aim point. Stick it in the end of the nozzle and carefully rotate it until it sprays in the correct location.
This is exactly what I've done with a few of my past cars.
Works well, but be gentle and test after each bit of pressure.
You will think you haven't adjusted anything and then when you try it you may find you actually over adjusted.