Husky 61 top end damage.

[bmp01]

Right then time for a little puzzle….  What broke? Have a look at the pictures for the damage. 

[bmp01]

A few bits of extra info… there is no damage below piston, none. The bits I found in the piston and cylinder are ferrous. It’s not the piston ring as that’s in one piece…

[bmp01]

I don’t know the answer BTW, it’s a saw I just bought on market place for next to no money and is otherwise good condition.

It does have a new Chinese spark plug fitted with signs of combustion …. Talking of which the other thing that looks odd to me is the leading edge of the crankshaft weights that are really black.

[bmp01]

Let’s see what the Arbtalk brains and experience can come up with. Then we can talk about repair, upgrade piston and cylinders 🤔😊

[Oldfeller]

Was  the air filter present and intact, I get a lot of cheap, often free saws that have just been used and chucked back in the shed for years with no maintenance whatsoever, this looks very much the case here.

it didn't come from wales did it?

 

Edited 1 hour ago by Oldfeller

[woody paul]

I have had a piston look like that first time was piston ring second was circlip holding gudgeon pin in broke up. 

Your fragments look to big for ether. 

Are carb butterflies intact. 

Or if saw has had a knock and metal from exhaust. 

Edited 1 hour ago by woody paul

[bmp01]

Air filter present under the cover but not fitted, just floating about. I wouldn’t be surprised if someone gave up trying to fix it, just threw it back together, top cover screws were loose too.
Something dropped down the inlet or fallen off the carb was my first thought - seen this before too.

BUT I’m discounting this because there is absolutely no damage below the piston…. not a mark. Am I wrong ? Tillotson carb on it if that helps.

[Stubby]

17 minutes ago, bmp01 said:

Air filter present under the cover but not fitted, just floating about. I wouldn’t be surprised if someone gave up trying to fix it, just threw it back together, top cover screws were loose too.
Something dropped down the inlet or fallen off the carb was my first thought - seen this before too.

BUT I’m discounting this because there is absolutely no damage below the piston…. not a mark. Am I wrong ? Tillotson carb on it if that helps.

Is it the pin that stops the piston ring rotating in the ring groove ? 

[bmp01]

Circlips present and correctly fitted, probably as fitted 30 plus years ago. Carb looks good.

Exhaust is cosmetically good condition on outside, all looks carbon grey through the port and exit hole. Something back through the exhaust gets above the piston though. 

[Oldfeller]

12 minutes ago, bmp01 said:

Air filter present under the cover but not fitted, just floating about. I wouldn’t be surprised if someone gave up trying to fix it, just threw it back together, top cover screws were loose too.
Something dropped down the inlet or fallen off the carb was my first thought - seen this before too.

BUT I’m discounting this because there is absolutely no damage below the piston…. not a mark. Am I wrong ? Tillotson carb on it if that helps.

it's possible it's not all of the original parts, as you say it looks like it was thrown loosely back together.

I had an old pioneer here that looks like it was ran on a mixture of fuel and gravel, that too showed little evidence of bottom end damage too.

the black areas of the crank could be the heat treatment from the factory, or maybe a sign of severe overheating, which could have contributed to the resultant wreck.

I would completely dismantle it and assess from there. if you got it cheap it could be made into a decent saw again with a little tlc and a few parts.