I'm having an issue with a v-star I just bought; If I clutch in while in gear with the rpms above Idle, it like s to stick to that idle speed. So for instance, if I clutch in, staying in gear, and brake, I will come to a stop with the bike idling way too high. At this point I have been letting out the clutch a little, which will slow the engine down to a normal idle. Pther odd thing I notice is that if I have the high idle, while stopped and in gear as described above, if I shift to Neutral, the revs drop down to a normal idle immediately. Also in general engine braking is pretty weak -- it likes to keep moving. Some time it sounds like the engine is stumbling when I leave it in gear and apply the brake, like I'm forcing it to slow down and it doesn't want to.
Now my first thought was that the idle was set too high. So I checked the idle adjusment screw, and I adjusted it in a little bit (with no difference). I stopped because I realized I don't know exactly what I was adjusting, as my only experience is with slide carbs. Also, I'm at work and I didn't have time to mess with it. throttle is not sticking, and the bike seems to run pretty well except for the idle hanging up.
What exactly am I adjusting when I adjust an idle speed screw on a CV carb (specifically the v-Star)? Am I adjusting the throttle butterfly valves? And is adjusting the screw in lowering or raising idle?
Any suggestions?
