Husqvarna Model 141 Chainsaw Carb adjustment

Adjustment and Tuning of a Chainsaw Carburetor ' Chainsawr

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Carburetor Adjustment for Chainsaws Carburetor adjustment is critical on chain saws ... These saws have what is called a "fixed jet" which is set from the factory.

Stihl Chainsaw Carburetor Adjustment - Tune-up Settings

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Stihl chainsaw's have three carburetor adjustment screws (LA) Idle Speed screw - This ... When the engine is tested at the factory the carburetor is set to obtain a ...

How to Adjust the Air and Fuel on a Stihl Chainsaw ' Home ...

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The fuel/air mixture in any gasoline-powered engine is regulated by the carburetor, and the carburetor in a Stihl chainsaw is factory-adjusted to provide the best performance.... You'll find three adjustment screws for the carburetor, usually located under the air filter cover.

Factory carb setting on Craftsman 2.0 or Poulan Micro ' Firewood

There is no fixed carburetor setting on these engines, just two screws to adjust low-end and high-end operation. Special tool may be required, there are about a half-dozen screw head standards. Check eBay for tool. Get the engine to run and idle fast (idle adjust) so it doesn't stall, adjust low-end screw so that engine doesn't hesitate or sputter when accelerated. Adjust high-end screw to run fast and smooth on full throtle. Readjust idle to normal.

All adjustments made to the fuel are screw adjusted, three screws are low ideal, high ideal, throttle stop. A flat he'd screw driver should do.

Stihl have a small orange screw driver- a tuning screw driver, it has an arrow on the end to show how many turns you have done when tuning your saw

http://www.ehow.com/how_7241334_adjust-husqvarna-carburetor.html

I wouldn’t recommend trying to adjust the mixture screws on a carburetor. Definitely bring it to a professional. I fix or try to fix everything and anything. My two exceptions are carbs and transmissions

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.

Start with "H" and "L" 1 turn CCW from lightly seated. Then tune for performance like this.
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. HTH
Lou

Most chainsaws and small engines are 1.5 turns out.

You need to set the mixtures for the carburetor. You will find a Low and High adjustment screw. At idle turn the screw in or clockwise until the rps starts to decrease. Then start turning it out till you hit max idle rpms. Turn screw back in a quarter to half turn and it should be idling smoothly. Be careful here and get someone to hold saw if necessary but hold in throttle to full speed and do the same with high adjustment screw. turn it in till rpm starts to drop then back it out until you get to max rpm and it won't go any higher then turn it back in a half a turn.

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