Husky Chain Brake Issue

[DR Buck]

I've been having an intermittent problem with my Husky 562XP.   Everything works fine, then all of a sudden it's like the chain brake came on and when revving the engine the chain does not move.  The chain brake is not set on.    If I hold the bar down against a log and drag the chain while revving the chain has lots of drag on it.   Then after a few time of dragging it,  it will start to work OK again.   It may work fine for the rest of the day, or hang up again within minutes.   Changing the chain and cleaning the sawdust out of the brake/clutch area makes no difference. 

Any ideas?   ???

[sawguy21]

Have you looked at the bar tip sprocket? It may be plugged with debris. I assume you have a floating rim drive sprocket so wear should not cause this problem.

[thecfarm]

When it happens again,lossen the nuts and the chain adjuster screw.Only do that. Grab on the top of the chain and see if you can pick it up from the bar. Go along the bar until you find where it is binding. I bet sawguy21 is right.