husqvarna 450 not running

[raudysvilius]

Hello, my husqvarna 450 chainsaw is not running, on starting up it starts very easily, runs for a second, spits smoke and dies. I've cleaned carburetor, cleaned air filter, checked the fuel filter(seems fine), checked spark plug(seems also fine, has a spark), changed the old fuel to new one. Is there anything else I should do?

[adw]

Fuel starvation would be my guess, so still has blockage in the carb, split inlet boot/ impulse tube, fuel filter in the tank blocked, low cylinder compression .

[raudysvilius]

I guess there still is blockage in the carb, because everything else seems to be in great condition. Will do another clean and inspection of every fuel line. Thanks.

[jimboy]

I had similar issues but on a hedge trimmer. Changed spark plug and air filter, and it ran for a short time then started to bog down before stopping.  Took off exhaust and cleaned out a filthy spark arrestor screen (size of half a postage stamp) and it runs sweet now. You might want to consider that.