chainsaw problem

[danchip]

Last weekend i got my chainsaw out of the shed after its winter hibernation and planned to use it to cut down a couple of small trees! I refilled it with oil and fuel and it started first time which i'm really suprised at as even when used regularly it never did that, anyway the engine idled fine but everytime i depressed the accelorator button it cut out!

Does anyone know why this may be happening?

Thanks

[Clanad]

My first guess is a stuck butterfly valve or needle valve in the carburetor throat due to "varnish" accumulated over the winter months from evaporating gasiline (your petrol). When you press the accelerator trigger, you're actually opening the butterfly valve to let in more air and the needle valve is where that air/fuel mixture enters the combustion chamber.

Here's a good pictorial link:
http://www.ankn.uaf.e...s/vs/carburetors.html

Additionally, always check the condition of the air filter, since on chainsaws it can easily clog.
Lastly, next winter be sure to drain all the fuel (including from the carburetor and bowl) or run it for several minutes after adding a goodly amount of Sta-bil or other recommended fuel additive for over-winter storage.

[danchip]

cheers clanad,

is this something which is easily fixed or will i need someone to do it for me?

[Clanad]

Seems like anytime one fiddles with the carburetor they wind up taking it to the repair shop. Most, if not all models, have kits for the carburetor, but, invariably, one loses the spring under the needle valve and have the devils own time finding it in the corner of the shop. It lends new meaning to the sound of "ziiinnnggg"...
Fact is, I'd take it to the repair shop and then store it better next winter.

One thing I would do before taking it in though is to take a look at the airfilter. It's easily overlooked and just as easily clogged...