Turn it one way should make it stiffer, and the other way to make it softer.
Too stiff and it won't move and might end up almost rigid. Too soft and you'll hit the bottom repeatedly. Put it somewhere in the middle. When you are riding, you want the suspension compressed some.
BTW, you should make the subject line more specific and describe the subject of the post. Putting 2012 Giant Roam 1 as with your other thread is very vague.
Last edited by jsdavis; 08-08-11 at 12:08 AM.