I have a pretty new MS 280. Saw is a good size firewood saw for this area (Interior Alaska) and I am happy with the choice. It has developed an annoying problem that persists despite a visit to the shop. I am not a novice with saws (have used a bunch, mostly Stihls) but am not much of a mechanic and have not run into this problem before.
The problem is that having adjusted the carb for acceleration and idle speeds, after making a few cuts and warming up, the saw hesitates when I hit the trigger. Then I open the low speed jet a little to get smooth and quick acceleration. Idle speed now too fast as expected. Reduce idle speed appropriately and after a cut or two, saw dies when I hit the trigger. Start over again with adjustments and most of the time it then works as desired but still dies sometimes when I hit the trigger.
Never had this kind of problem before. I have run several tanks thru the saw and shop says nothing wrong and just not broken in yet. I don't believe that is the problem. Shop says says adujstment was a little lean when they checked it and I forgot to ask but I don't think they did any cuts to mimic the problem that I encounter.
Am also using an old 025, a brand new 180 (a gem for the trail and the boat), and before the 280 had an 064. No such problem with these. (I had used the 064 for a milling project long ago and hoped to use it for bucking up firewood. No decompression release and trying to start it when it was cold out damned near wrecked my arthritic hands. But it sold quickly!)
Most of the use this year has been in cold weather. This area is still in a prolonged cold snap (-30 F last night) and use of the saw has usually been at -20 F or colder. Saw is kept inside while not in use, air filter is clean, fuel is fresh, mix oil is Stihl, replaced sparkplug, and incantations are appropriate.
Suggestions and advice would be much appreciated! :help:
Also, is it true that neither a 361 nor a 5100 has ever had such a problem?
The problem is that having adjusted the carb for acceleration and idle speeds, after making a few cuts and warming up, the saw hesitates when I hit the trigger. Then I open the low speed jet a little to get smooth and quick acceleration. Idle speed now too fast as expected. Reduce idle speed appropriately and after a cut or two, saw dies when I hit the trigger. Start over again with adjustments and most of the time it then works as desired but still dies sometimes when I hit the trigger.
Never had this kind of problem before. I have run several tanks thru the saw and shop says nothing wrong and just not broken in yet. I don't believe that is the problem. Shop says says adujstment was a little lean when they checked it and I forgot to ask but I don't think they did any cuts to mimic the problem that I encounter.
Am also using an old 025, a brand new 180 (a gem for the trail and the boat), and before the 280 had an 064. No such problem with these. (I had used the 064 for a milling project long ago and hoped to use it for bucking up firewood. No decompression release and trying to start it when it was cold out damned near wrecked my arthritic hands. But it sold quickly!)
Most of the use this year has been in cold weather. This area is still in a prolonged cold snap (-30 F last night) and use of the saw has usually been at -20 F or colder. Saw is kept inside while not in use, air filter is clean, fuel is fresh, mix oil is Stihl, replaced sparkplug, and incantations are appropriate.
Suggestions and advice would be much appreciated! :help:
Also, is it true that neither a 361 nor a 5100 has ever had such a problem?
