Originally posted by NemesisOne
Kind of hard to diagnose with never seeing the bike.
After it warms up it should idle at 1250 to 1350rpm. This Idle speed is important because it is at that engine speed (with no load) that the wet sump system in your new black beauty makes enough oil pressure to properly lube the entire engine. Idle speed will be low until your temp guage reads at least 140. After that if it is still below 1250rpm raise it by turning the Idle adjust knob (right side, just under the tank, aft of fairing) until it reaches proper rpm.
As for "Sounding" rough... keep in mind that the 636 is fuel injected so you will hear a considerable amount of "ticking" coming from the fuel injectors themselves. REMEMBER... you have a 600mi. service coming up, dont neglect it! Besides having the oil filter and oil replaced, this is a chance for you to cover your concerns with a certified Kawasaki technition while the bike is still under WARRANTY.
Other than that, follow the maintenance schedule in the manual and DO NOT... that is to say DO NOT... move to a synthetic oil untill you have at least a 1000 miles on the clock. Synthetic oil is damn good stuff for an engine but it will stop any break-in from occuring.
Hope this helps, I'm not a bike mechanic by any means but I have been an ASE certified tech at a GM dealership for 14 years and the best thing you can do is get all your questions and concearns addressed while your vehicle is still under warranty.
If your butt itches, your fingers probably stink!