Let the fun begin...

[Woodwackr]

I’ll say it again. Put it all in a box and send it back to me

goes out Monday

 

[Bill G]

Well, looks like Nate just plum wore this thing out
Current theory is clutch side bearing failure cascading to blow a seal and…won’t know what else till I get it all apart.
Compared pics from Kevin from the original build with what’s there now. Uh, a bunch of bearing *s-word isn’t kind to the inside of a nice cylinder. What’s there now ain’t what left Kevin’s shop . I think Nate got his money’s worth after 4yrs of hard, commercial use. Id also blame Husqvarna for a poor design but they probably didn’t factor this saw wearing a 32” bar for 4 yrs.

That is a hell of a lot of bar on medium saw.

 

[huskihl]

That is a hell of a lot of bar on medium saw.

It is, but they can be made to do it and still be reliable. @Cat 525 runs a half dozen of mine with a 28 dropping walnut every winter.

 

[Woodwackr]

So, since this thing has become a complete mystery and is way beyond my guessing "skills" I'm sending it to Kevin, who will figure it out. I'll let him continue this thread when he has more info, and time.
My initial guess as to bearing failure was wrong. With all the reports of crappy, even OE, bearings out there, I assumed...oops. bearings seem fine, crank spins freely with no indication of any bearing issues at all. I have not split the case since I don't have the needed tool for that. With the case stuffers I can't use my usual splitter.
What appeared as metal debris in the bottom of the case with a scope was just a reflection created by the scope cam's light. once I got the jug off to look...zip, nada. nothing metallic at all, case was clean.
There is clear detonation pitting on the ex side top of the piston so, a bad gas issue?

the mystery continues...stay tuned...

 

[Ketchup]

Kinda looks like dirt got in the muffler/exhaust.

 

[Woodwackr]

Kinda looks like dirt got in the muffler/exhaust.

A definite possibility. There is no shortage of dirt on this thing