Broken at cylinder base

[Reesedlightning]

Hey everyone. Currently working on an 064 that came to me as a basket case with low compression among other things. Found a crack in the case where the cylinder mounts up. Gave the part a good hard wiggle by hand and it broke right off. Never seen anything quite like this. Is this fixable via JB weld or do I need to find a shop to rig weld this thing?

 

[huskihl]

Looks like someone tried removing the clutch with an impact without the piston and cylinder attached.
Replace the crankcase or possibly @srcarr52 can fix it

 

[Reesedlightning]

That’s what it looks like to me too. Someone was in this saw before me. I found all kinds of issues. The clutch side bearing is trashed so I was going to split the cases anyways. Could I possibly use a donor case half or should I stick to a whole new case?

 

[srcarr52]

Looks like someone tried removing the clutch with an impact without the piston and cylinder attached.
Replace the crankcase or possibly @srcarr52 can fix it

Yeah. I could fix that. It’d be a pain but it can be done.

 

[huskihl]

That’s what it looks like to me too. Someone was in this saw before me. I found all kinds of issues. The clutch side bearing is trashed so I was going to split the cases anyways. Could I possibly use a donor case half or should I stick to a whole new case?

Not certain about mismatched stihl cases. I’ve seen .020” difference in deck height

 

[Reesedlightning]

Not certain about mismatched stihl cases. I’ve seen .020” difference in deck height

Roger that. Thanks for the reply

 

[Sauen]

I’ve fixed an 066 with JB weld where the conrod had punched through that spot. Has held up fine and was easy to do.

 

[Funky sawman]

Not certain about mismatched stihl cases. I’ve seen .020” difference in deck height

Kevin is spit on with that. Of all the basket cases I've tried to cobble together, only like 5 percent of mismatched cases actually line up and are square with one another

 

[Reesedlightning]

Kevin is spit on with that. Of all the basket cases I've tried to cobble together, only like 5 percent of mismatched cases actually line up and are square with one another

Solid info. Thanks. I was starting to wonder what the likelihood of cases matching was. I have a 266 with a 272 top end on it that I won in a raffle and once I got into it, I realized the cases were mismatched and man what a headache that was just trying to get the cylinder to sit flush