or the throwout bearing is tuching the pressure plate a little causing it to spin. give the cable a little more slack and see if it stops .
the outpuit shaft is probably spinning becouse their is oil in it causing enough drag to spin the outpuit shaft.probably normal
This must be a common Suzuki problem.
Heard it a bunch of times on Sammys.
Even heard it once on our own Kick.
We replaced clutch components, (including the throw-out bearing) and it went away.
~Nate