Most power cleaners come with five different colored spray wand tips. The red tip is zero degrees and produces one of the most concentrated type of water stream. Be extremely careful when using this zero degree tip, it usually has enough force behind it to cut a hole right through your boot. The yellow tip produces a fifteen degree wide water stream. I personally like to use this yellow nozzle for most stubborn stains and dirt on the job and around my house.
The green nozzle is a twenty-five degree nozzle, it’s best when you decide to do any type of general cleaning. The white nozzle makes an even wider water stream, about forty degrees. Use the white nozzle for the very easy cleaning tasks you have. The black nozzle is usually the easiest one to use, it makes a very wide water stream of sixty-five degrees. I personally like using the black nozzle when applying special cement cleaners to the sidewalk just before I get ready to start my machine.