Saw idles somewhat but bogs down and quits (no power) when using throttle

SOURCE: husqvarna chain saw stalls

hi charlier 421

I think the small holes from the Venturi wall of the carb are clogged.To clean them you need carb disassembly.Near the needle there is a tehnological cover,under the diafragm(fuel pump).Taking off it you will see some small holes maiking conection with Venturi wall.Used ompresed air to clean them.
best wishes savumihai71

SOURCE: Husqvarna ranger 55 chainsaw starts but quits

Sounds like it could be fuel starvation. I just had a case of exact same except mine finally worsened. Most likely and what I just encountered, its your fuel line. It's a quick and simple fix and you can do it yourself. Youtube has several videos showing you how to do it. Feel your tube, if it feels soft or spongy, it's probably got cracks or even a pin hole somewhere. It's $10 and as I've learned, one of the most common fixes when saws start cutting out at full throttle or under load. My dealer said he's been through 15 of them in the past 3 months.

SOURCE: Husqvarana Rancher 55 , how to clean the exhaust port

Cleaning the exhaust: on the saws I've worked with it was just to loosen two bolts at the front and then the exhaust is off the saw. Clean with brake cleaning fluid and blow with compressed air, let it dry before assembling. Don't forget to clean the fine mesh at the output side underneath the lid if present (i.e the spark arrestor).

Make sure to have your carb adjusted properly afterwards.

SOURCE: 25 yr old Husqvarna 266. starts fine, lots power, but won't idle.

I think you have exceded our level of help. Please try here.
ArboristSite.com Chainsaw thread (free to join)
http://www.arboristsite.com/forumdisplay.php?f=9

You might read this thread
http://www.arboristsite.com/showthread.php?t=110858&highlight=husky+266
I searched for "Husky 266" and got many positive hits. She is a respected machine.
http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/9f5525102886abf488256b52001a33af?OpenDocument
HTH
Lou

SOURCE: my husqvarna chain saw bogs down even without chain on it.

I think your "L" adjustment is off by a little, but because it will not hurt, costs nothing, and might be the cause of this, remove, clean and reinstall the muffler and spark arrestor. If the problem persists try this, it is by far the best carburetor adjustment I have found.
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
There are 2 wav (sound - idle & full – may not be highlighted) files that I find most helpful, I think you will too. Good Luck. HTH
Lou