What is this sound??

[Iarn]

Been noticing this chattering sound coming from Ele in traffic. I traced it to the cylinder head area. I'm not really sure if this is a normal sound or not, but any insight would be really appreciated. She only has 6,500 miles on her, so I can't believe if it's the piston slapping... 

This video was taken after a ride home from work. Probably 15-20miles.

It's hard to hear over the exhaust and such, Listen closely at 0:04-0:05, 0:09-0:11, and 0:14 seconds. I think it's the most noticeable then. Tinny, quick chattering.

Thanks!

[Suzuki Stevo]

I just heard valvetrain, and it sounded loose the way I like it 

OK, I did hear a separate tinny/higher pitched tapping, when viewing again, still think it is just valevtrain....although tinny/higher pitched

[Slack]

Doesn't sound like anything to worry about.

But. . .
Have the valves ever been checked?
If not, it's past time.  And misadjusted valves will cause more top end noise.

[Iarn]

When came into possession of Ele at ~5000 miles from the PO I had her two exhaust valve shims changed from 260 to 250 because he said they were way too tight. I also replaced the cam chain tensioner assembly. As far as I know that was the end of it. She now has 6500 miles.

[sledge]

Sounds ok to me 

these are old engines and shouldn't be compared to the modern stuff. Even in good condition and set up correctly they can be noisy

[Iarn]

Okay, I'll stop fretting over it. Appreciate y'alls help.

[Suzuki Stevo]

You get excited when you don't hear the clatter 

[J_Walker]

I heard what he's talking about, its a metallic clanking noise.. faint but its there.

its more of a dink, clink, then the normal noisy lawnmower engine noise.

[Iarn]

Right J_Walker. I don't know what it is, that's all. If I knew for certain I would feel a lot more at ease over it.