Husqvarna 440 rebuild question

[ErnieG]

I'm working on a buddy's saw that he lent out and came back not running and it won't start .
I quickly found it had poor compression so I took it apart and found the ring frozen in the piston .
It's very black..I'd assume carbon and heat did this saw in .
What's your thoughts ?
I'm thinking I could clean both the p/c up and throw a new Caber on it and see what happens .
There's very lite carbon scoring that I think I can clean off .
Here's a pic of the piston ...
Thanks....Ernie

 

[ErnieG]

I'm not sure what's going on but I can't post pics now ..I'll try later

 

[frank_]

I'm not sure what's going on but I can't post pics now ..I'll try later

i was,nt able to load pics either,
carbon stuck ring is a result of too much oil mixed imo

 

[Woodslasher]

 

[Bubster]

dead gas,especially ethanol,can and will cause that as well.It becomes more common as ethanol is the thing you can buy .

 

[Woodslasher]

Like you said, considering how "fresh" the majority of that piston looks I'd clean it up either with a strong cleaner or some scotchbrite, re-ring it, and re-use it.

 

[Mad Professor]

Maybe he was running outboard mix oil?

 

[TBS]

What's the cylinder look like? I'd imagine it was running lean or dull chain.

 

[ErnieG]

Here's the cylinder

 

[TBS]

Here's the cylinder

It's doesn't look bad, clean up the jug and the slug then throw a new ring on it.