Dont own the 610 but on the 510 there will be a plastic cover on the right side of the throttle body. Remove this cover and you will see the cam that the throttle cables attach to and a bolt with a adjustable nut that controls the position of the cam (intake butterfly which controls idle). You can lower your idle by adjusting this screw but your Throttle position sensor will be reading incorrect info. You must hook the bike up to the iBeat software from Husky to make the changes you want....oh, and it will run even better than the setup you have now after iBeat adjustments!
I would not mess with it until you have access to the iBeat to do it right....
I would not mess with it until you have access to the iBeat to do it right....