Humming sound in neutral
Today I was lubricating my clutch cable and started my V afterwards in neutral. I pulled the clutch lever to enjoy the souplesse of a freshly lubricated cable and noticed that the sound of the engine slightly changed, it was making less noise. It was a very faint sound, but noticeable. The noise returned whenever I disengaged the clutch lever (still in neutral). I'm a little worried since I've had a Yamaha Fazer with the same issue which turned out to have worn piston rings.
Hopefully someone has a solid explanation for this. The bike was sold under warranty, so if there is a problem I could return to the dealer and have it fixed, but I'll need a solid explanation.
Thanks in advance!