Husqvarna 339XP Clutch issue?

[DHansen]

I have a 339 XP I bought new in 2007 and today on a very simple 3" cut the chain speed would slow down and stop spinning.  This did not have any affect on the RPM of the saw.  Pull the bar out of the cut rev it up and go to it again, same thing.  Took off the clutch side cover with brake band and handle.  Not full of wood chips.  Clutch drum and shoes look good.  Should I just put on a new clutch and see what happens?  Is there a tune up I can do to my existing clutch?  It is acting like the clutch is slipping.  Photos are what it came apart like, I did not clean anything up prior to the photos being taken.

[Old Greenhorn]

Well I know that you know what you are looking at. The clutch 'looks' pretty good and clean, but it could be at the end of it's wear cycle. Can you extend it manually to see if it still has more travel?
 Wondering if that is a rim sprocket or a spur drive. Eighter way, have you taken a look at that? It's a bit of a head scratcher for the moment.

[DHansen]

The rim sprocket looks new.  I took it apart and put it back together.  I will try a cut again tonight if time allows or tomorrow.   Right now I am thinking I did not get the chain drivers into the rim teeth.  So the chain was pinched between the clutch drum and the rim.  There are marks on the edge of the clutch drum that would suggest this was the case.  So free running the chain it would spin the chain up to speed, but with no real driver to rim tooth engagement the result was a slip under load.  Will confirm and update.  This is looking like a problem I created.

[Old Greenhorn]

As I said, I know you know what you are looking at, and it sounds to me like you figured it out. I always have to look twice when I mount up a new chain on a rim sprocket to make sure it's set in right. I'll bet a full nickel of hard American cash that you figured it out already, the symptoms fit correctly.

[DHansen]

Yep, that fixed it, helps to pay attention to detail.