I'd have a shop do the valve adjustment and replacement of cam chain and tensioner and with 80k miles, it's probably a real good idea.
80K??? Yep...I'd R&R the chain & tensioner, since you're hearing the rattle. No argument here.
A timely thread, this. My '03 @110km/68Kmi. went into the shop last week for a valve adjustment and when I went back to pick it up yesterday they had discovered a rattling-chain noise and gave me the bad news that I need a new camchain plus tensioner and guides. Not great news - particularly as the tech hadn't heard the noise before he completed the valve adjust...so it's back into it all over again which will set me back another grand for a total of ~$1600.
If nothing else I've learned that Communication with the dealer is #1. In Sept. we had discussed the "noise" and I said I would leave further investigation until Spring as the bike was going into storage over the winter. When I took it in last week I
assumed that the dealer had made note of the noise and passed the info on to the tech - who had no reason to start up the bike before he started the valve adjust. The tech was unaware and I should have put it on the work order. Hindsight, eh?
I've been reading here as I was curious to see if this had occurred to others at similar mileage and I see it has. So am I to consider the replacement "normal" at this mileage?
Kasey