I've just noticed that my headset appears to be loose..I can hold the handlebars and move the frame ever so slightly up and down. Problem is, I don't know whether my headset is a threaded or non-threaded headset. Can it be adjusted, or is it time to replace parts?
I've read some instructions online on how to identify my headset type, but the lingo just doesn't jive with me.
Below is a picture of a similar bike, but the part that attaches the handlebars (the gooseneck?) looks exactly the same, as well as the headset setup below the handlebars.