That is a hell of a lot of bar on medium saw.Well, looks like Nate just plum wore this thing out
Current theory is clutch side bearing failure cascading to blow a seal and…won’t know what else till I get it all apart.
Compared pics from Kevin from the original build with what’s there now. Uh, a bunch of bearing *s-word isn’t kind to the inside of a nice cylinder. What’s there now ain’t what left Kevin’s shop. I think Nate got his money’s worth after 4yrs of hard, commercial use. Id also blame Husqvarna for a poor design but they probably didn’t factor this saw wearing a 32” bar for 4 yrs.
It is, but they can be made to do it and still be reliable. @Cat 525 runs a half dozen of mine with a 28 dropping walnut every winter.That is a hell of a lot of bar on medium saw.
The master at work…Cleaned up the cylinder and re-beveled the exhaust port
View attachment 452021View attachment 452022View attachment 452023View attachment 452024
It livesSo, it will live to cut again! Awesome!
Only damage I could find is chipped plating from the bottom of the exhaust.
Cleaned up the cylinder and re-beveled the exhaust port
No mysteries here.As caked on hardcore filthy as that case looks was the jug caked too? Id think it just ran hot, maybe a little lean on oil in the mix 1-2x and that may have pitted the pistonDid the previous owner like to use race gas, that could have led to some piston degradation if the oil was not upped a littler too. Only other hypothesis is, was it use for short burst on a few super negative cold days and maybe the jug thermally expanded unevenly form hot on one side negative degree air on the other?....its a small engine I dont see temps playing much of an effect but
![]()
Yeah probably could’ve used a piston. I ran some scotchbrite over the whole thing and slipped it into the bore. Under .003” clearance still using feeler gauges. Ring was at .015” end gapNo mysteries here.
The 562 is a pain in the ass to get the bevels on the port edges to lay down and create a nice clean bevel on. A serious pain in the ass. I've done a great many of them. What was found: A small sliver of plating had flaked off below the exhaust port. That piece living in there scuffed up the piston a little. I say a little because this saw has been used.....and used hard. A little touch up to that port.....and it's good to go for a another hard round of tree killing.
There are only a few guys that I have the confidence in to send work too.....and Kevin is one of them. He doesn't need that these days of course....but there was a time a few years back when I sent a hell of a lot of people his way. And not one was disappointed by the level of quality of his work.
To lay this to rest: This saw.....a 59cc Husqvarna has been running a 32" bar for years. And at worst it might could use a new piston? That's fughin impressive.
Cylinder was caked pretty good inside the fins. Might have led to it. Race gas probably would’ve caused it to run cooler. Octane resists pre-ignition. No benefit to it in a saw as these only run about 8:1 compression ratio. Oxygenated fuel would be a no-no without making certain the auto tune could deliver enough extra fuel for the added oxygenAs caked on hardcore filthy as that case looks was the jug caked too? Id think it just ran hot, maybe a little lean on oil in the mix 1-2x and that may have pitted the pistonDid the previous owner like to use race gas, that could have led to some piston degradation if the oil was not upped a littler too. Only other hypothesis is, was it use for short burst on a few super negative cold days and maybe the jug thermally expanded unevenly form hot on one side negative degree air on the other?....its a small engine I dont see temps playing much of an effect but
![]()
Notice that I said "Might at most". You were the guy who needed to make that determination.Yeah probably could’ve used a piston. I ran some scotchbrite over the whole thing and slipped it into the bore. Under .003” clearance still using feeler gauges. Ring was at .015” end gap
No mysteries here.
The 562 is a pain in the ass to get the bevels on the port edges to lay down and create a nice clean bevel on. A serious pain in the ass. I've done a great many of them. What was found: A small sliver of plating had flaked off below the exhaust port. That piece living in there scuffed up the piston a little. I say a little because this saw has been used.....and used hard. A little touch up to that port.....and it's good to go for a another hard round of tree killing.
There are only a few guys that I have the confidence in to send work too.....and Kevin is one of them. He doesn't need that these days of course....but there was a time a few years back when I sent a hell of a lot of people his way. And not one was disappointed by the level of quality of his work.
To lay this to rest: This saw.....a 59cc Husqvarna has been running a 32" bar for years. And at worst it might could use a new piston? That's fughin impressive.