Hey Norm,
Nice pics, that's a good lookin' saw you got.:msp_thumbup:
It's an '08 ms260pro, compression is about 170lbs, I found the flywheel side crank seal leaking so I replaced it and the vac/pressure test is tight at 8lbs. The first day I used it the saw seemed to be running good, the next day was a different story, went back to the original problem which was not holding idle. When I get the carb tuned so the saw will run it won't hold idle for long, it wants to keep idling down to the point where it will just stall. Also position of the saw affects the way it runs, pointing the bar at the ground will cause it to idle down to the point of stalling out, pulling on the chain brake also causes it to idle down???:bang: I may tear it down again and recheck vac/pressure, sure can't use it the way it runs right now. It's really kinda weird? I'm trying to learn how to fix my own saws but this is getting a "little" discouraging. When I got my 385xp I put on the modified muffler and cut the limiters off the idle screws I had the carb tuned and running great within 10 minutes. I was hoping the ms260 would be the same way. Also, it came with two carbs, stock and a Walbro 194. I also have the stock muffler and a modified muffler, the saw seems to run the same with both combinations. I noticed on my other saws they are very sensitive when making small carb adjustments, the ms260 is not, it takes a large adjustment to make a change. Not really sure what that means? :dunno: Also found when I did the vac/pressure test that the decompression valve was leaking, don't know if that's normal or not? The piston and cylinder look like they are in very good condition, hardly any wear/scratches at all. I have very little experience getting this deep into working on saws, I don't know what would cause a saw to run like this??? It's a great saw when it runs, I would really love to have it in good running condition. A lot of information I know, but I tried to put down everything I could think of.
Oh yeah, that tree in the picture is a conifer, I don't think it's a Pine, maybe a Fir or Spruce. There's not much left to it, it's just the trunk with no bark that I could see.
Work safe. :msp_thumbsup: