93 Kawasaki Vulcan belt issues?

[Natebat5]

Ok I'm posting this because I'm trying to help my brother out. he bought a 1993 Kawasaki Vulcan a couple weeks ago and he was practicing riding but me and my dad noticed it was making a weird clicking sound, I tried to see what was wrong with it and this is what I figured out; it doesn't matter if the bike is on or not, the sound seems to be coming from the gearbox/ and belt (it's a belt driven bike). The sound happens when The bike moves, even if it's off and I'm just pushing it. so I'm not sure if it's just simply the belt is too loose or perhaps too tight. Or maybe the belt is rubbing against something? Maybe it's not the belt at all, I'm not very familiar with the bike and I can't find much info online about this clicking sound. It's not engine knocking because the sound is there regardless of whether it's running or not, I'm pretty positive that the sound is coming from where the belt meets the gears? I'm not entirely sure how a belt driven bike works. Let me know your ideas -thanks

[Natebat5]

Any ideas?

[JRH]

Is it regular, I've in the same place. Mark the belt and push it and see if the click occurs at the same place.

Check to see if there is anything trapped in the belt, small stone or the like.

[eastanglianbiker]

being to tight or to loose would not make it click

[eastanglianbiker]

also a buckled disc rattling the disc pads or the bobbins on the discs if it floating discs