I got a 1980 xs650, and before I start working on the carb I want to clear up something that i've been wondering. I know that with jets, they're very specific and are based on turns. As in how many turn out.
But what i'm wondering, is for the main jet, you don't adjust it by turns right? you just increase the main jet screw size? My main jet screw says 135 on it, and from what i';ve found, i just screw it in. I don't have to worry about screwing it to a specific tightness or anything right?