064 clutch problem?

[PWB]

Backround:
Bought an older west coast logging saw from an aquaintance maybe a year and a half ago. Looks a little rough, has great compression and runs/cuts great.

This spring, started having problems with chain running when it shouldn't. Pulled clutch drum, clutch shoes/springs look good, replaced drum/bearing. (warped?) Solved the problem at the time.

Went to use saw about a month ago, same problem. pulled clutch drum, found a broken clutch spring. Ordered a set of three and changed them (without removing shoes). Solved the problem.

Went to use the saw to flush cut a stump yesterday, same thing again. I suspect another broken spring. Any chance there's a burr on the back side of a shoe cutting/breaking a spring? The clutch looks good, doen't have exessive wear as far as I can tell.

 

[Lakeside53]

You may have excessively worn shoes - not the outside, but where they meet the central spider, and, the holes where the springs attach may be elongated. The Spider is likely worn also..

 

[PWB]

Thanks Lakeside, looked at all that last time and it's pretty good. I'm an idiot though. Guess what I found when I took it apart?

Lost the clip that holds everything together. Clutch bearing, washer, and clip and I'm back in business.