Broken cylinder fins

[Leeroy]

461 for sale nearby. I'm thinking this might be an issue with heat dissipation or lack thereof.
Any opinions?

 

[pioneerguy600]

Opinions, well this issue has been hashed over and over on this site. It was claimed that the factory recommended no more than two fins be broken for a continuous use engine but many members with real world experience will say that those 3 broken fins in your pic will be no problem. Don`t bother welding any pieces back on the cylinder will cool well enough as is if the rest of the fins are kept fairly clean.

 

[buzz sawyer]

Do you or the seller know what caused the broken fins? I agree, the missing pieces should not be a problem but was anything else damaged when they were broken?

 

[OM617YOTA]

Dirt buildup on the broken edges of the fins. It's been run awhile in that condition and hasn't blown up yet.

 

[Bob Hedgecutter]

Ask yourself which is worse- some fins broken off on a clean cylinder, or the between fin areas of a cylinder packed with oily sawdust and general filth?
On a secondhand saw you are very likely to find the latter- which certainly does not help to dissipate heat- but usually the saw is still running.