Special carb adjust tool for Husqvarna 240 e chainsaw

SOURCE: Spltting a crankcase on a Husqvarna 394 chainsaw?

the gasket is what is holding it together, if all the bolts are off. you gotta peel it apart. put one side in a vice is how i do it. and do it slowly. everything should slide out .im just telling you from my memory and i cant visualize that particular engine at the moment.

SOURCE: husqvarna chainsaw carburetor adjustment

Find the 2 screws. There will be a (h) high and (L) low. These are for hig rpms and low rpms. First tighten the screws. Then unscrew them about 1-1/4 turns. Then start the saw and let it warm up. Start with the high rpms first pull the trigger all the way then adjust the screw in 1/8 turns either way until it is running good at high rpms. Then work on the L rpms. Get the saw to idle then pull the trigger, there should not be any hesitation when going from L to H rpms. Just adjust the low same as the High. They have to work together so if the high is good and the low is not just right turn the h a small amount. If you have any more questions let me know

SOURCE: Husqvarna Model 141 Chainsaw Carb adjustment

The tool you need is available from Randy's Engine Repair, on his E-Bay store. The price is about $10., plus $3. shipping. Phone for Randy's is (937) 927-5665. It is usually busy.
Ebay item number is: 390025452838. Buy it online. I got mine about a week after I ordered it.

SOURCE: cannot adjust carburator on husqvarna chainsaw 435

the screws are on the side of the carb very small heads flat screw driver is needed as they have a cover on them it has to fit inside the cover H (high) and L (low) tighten them all the way in tight but not forcing them turn anti clockwize 1 1/4 turns try to start the saw pull the trigger and adjust the H (high) till it runs smooth then  let it idle then pull the trigger again saw should rev without loss of revs if it does turn the L (low) small amount either way till it does  hope this helps 

SOURCE: carburetor tool

Unless you are skilled enough to make your own, you are stuck taking the saw to a servicing dealer as they are the only ones allowed to possess the necessary 'D' head screwdriver. Give thanks to the EPA for mandating the prevention of mal-adjustment pollution.