On the ZX-14 I regularly adjusted the idle. In the winter, I would bump the idle to about 1100-1200. In the summer I would lower it to around 1000.
In the winter it wanted to idle lower when cold. In the summer, that wasn't as much of a problem, and the lower idle speed also reduced the temperature of the bike some. You wouldn't think 200 RPMs would be that noticeable but it is when sitting still in traffic.
