Piston contest.

[Mange]

1) What saw is this for?
2) What happened to it?

 

[TonyM]

Looks like it caught the edge of a port somehow. If I had to guess, an exhaust port, but why is it inline with the wrist pin, and what is the piston cut away for.

 

[Mange]

Nope.

 

[TonyM]

Okay, you dropped it on your cement floor! Was someone trying to make a piston stop by sticking something in a port?

 

[Mange]

.
Nope.
It was running when this happened.

 

[spacemule]

Is that a piece of a spark plug wedged in the top of the piston in the first picture?

 

[PWB]

looks like roller bearing from the crankshaft end of the connecting rod to me. I've got a piston that has similar damage out of a tecumseh 2 stroke (98cc?) on a John Deere weedeater.

 

[pallis]

Looks like the spark melted or broke off. I think Spacemule is right.

 

[West Texas]

Looks like one that came out of an 026 saw that I bought on ebay, from a guy in Alaska. He said it was difficult to start, probably needed a tune up.

 

[andrethegiant70]

Hmm.... possibly someone installed the thing without a cylinder gasket and crashed it? And I have no idea what saw its from... because it's you, Mange, I'm thinking Husqvarna.

 

[Mange]

looks like roller bearing from the crankshaft end of the connecting rod to me. I've got a piston that has similar damage out of a tecumseh 2 stroke (98cc?) on a John Deere weedeater.

Here is a half winner!!!! But only half way winner, one more answer is required
Now to the tricky part.

What saw.

 

[Mange]

No not a 026 .

 

[PWB]

Sorry, I recognize the damage but not the piston. Has to be something older with a connecting rod that has a rod cap that comes apart. Mac? Homelite? I haven't got enough experience with saw motors to know.

Have a collection of damaged pistons from other stuff that's accumulated over the years though!

 

[PWB]

I might have spoke too soon. Could be piston end of the rod too. Not sure without seeing more...........

 

[Mange]

Actually the rod is OK.
It was "just" the bearing in the piston.

 

[HiOctane]

Looks like a 162 Husqui piston.

 

[Mange]

Looks like a 162 Husqui piston.

Close....

 

[cuttinscott]

I recognized the needle brg from the piston pin and as far as the saw goes im thinkin husky 262 or 362

scott

 

[HiOctane]

From a 254.

 

[Mange]

From a 254.

Very close.