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Esco chainsaw model 162

Hi i have a esco model 162 chainsaw i wonder would you be able to help me; What way do you turn the screws on the carburetor

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The adjuster screws on a chainsaw carb are fuel screws,not air screws, so by unscrewing them anti clockwise will richen the mixture, there are normally three screws, an engine idle screw, this will operate against the throttle spindle, a screw marked L, this will adjust the fuel mixture from idle to half throttle including acceleration, and a screw marked H, this will ajust the fuel mixture from half throttle to full revs, as this will increase the maximum revs it is very importent not to exceed the manufacturers no load speeds, so a engine tacometer should be used to check this, over speeding can seriously damage the engine.

Posted on May 09, 2013


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Posted on Jan 02, 2017



one turn high and low 66 has compesator carby willrun rich up high but will lean under load

Posted on Sep 03, 2008

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SOURCE: adjust carburetor gas and air intake on craftsman chainsaw

There is too much information to relay so I would suggest you go to and type in your saw number and on the right side there is an area for a manual. You will need to use your email addy and select a password for this but it is free. You can view or download the manual and the area you need is on page 15. Let me know if this won't work and I will copy and retype info requested.

Posted on Feb 18, 2009

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SOURCE: I need help with a carburetor adjustment on my chainsaw.

this site gives alot of helpful hints

Posted on Mar 02, 2009

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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.

Posted on Sep 11, 2009

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SOURCE: Homelite 3314 chainsaw starts but I cannot keep it

this is called a california carb and these screws are made this way because they don't want you to do any adjustment,you can try to remove the carb and clean it yourself,i have had some luck(if its not too dirty) if you can get it started and then keep spraying in wd-40 in the carb it may pull the obstruction thru and melt the varnish out of the carb caused by the oil/gas mixture,also clean out the reed port on the exhaust as it carbons up over time and can cause back-pressure on the exhaust side

Posted on Apr 29, 2010

Testimonial: "This explains the "california carb" but there must be a way to adjust. I am thinking about cutting slots in the screws with by Dremel."

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David, may vary by make, model and engine size. I turn the L(low) and H (high) speed screws in till just seated(bottomed out) lightly, then I turn each screw out 1 complete revolution, start saw and tweek adjustments from there on the L and H. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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gently run the fuel and air mixture screws on the carburetor all the way closed (clockwise).then turn them out one and a quarter turns each. That setting should allow the saw to start if you are getting fuel to the carburetor. Once the saw starts, make fine adjustments to the fuel/air mixture screws until the saw runs to your satisfaction.

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You can try to adjust with L screw. When starting a chainsaw it is best to put the screw to 1.5 turns from the end. Then set the idle. There are screw for minimum (the chain must be stationary at a minimum). H screw is for high revs. With H screw you can set the best work of chainsaw at high throttle. If you can not be set, it is necessary to clean the carburetor and check the nozzle membrane of a carburetor.

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I turned the screw labeled T all the way out by mistake when i was fixing the pull cord.It runs with the screw back in but it will not idle .I was wondering if there is a good start point {like all the...

There should be a small compression spring on the screw which helps hold the adjustment setting. Did it get put back on? If the screw is all the way CW, the engine should idle at a high speed (enough to cause the chain to turn). Normal procedure is to start the engine and adjust the screw til the chain stops trying to turn, but the engine will continue to idle without stopping. Remove the cover over the air cleaner/carburetor to inspect the screw action on the throttle arm of the carburetor. Hope this helps!

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1 Answer

Chainsaw runs full speed, will not idle.

Expose the carburetor so that you can observe the action of the throttle lever on the carburetor. The trigger should move the lever from the idle adjust screw to full throttle stop. If no movement observed, remove the trigger assembly from the front handle (make notes as you remove the pieces) and clean the area of sawdust/dirt accumulation. Recheck the action after everything is re-assembled before starting the engine. If the idle speed is still excessive, then turn the idle speed screw several turns CCW until the chain stops turning. Try wiggling the carburetor body to see if it has come loose from the engine. Hope some of this helps!

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Is this unit under warranty? If so, take advantage. If it is out of warranty, did it work well up to this point? The carburetor is not pumping fuel, but running for a short time on the prime. Remove the carburetor and check the body screws for tightness. Make sure the pumper port to the crankcase is open. If it is a Walbro brand carburetor, remove the lower cover (4-screws) and make sure the diaphragm is next to the body with the pin side in, then the thick gasket, and finally the cover. Hope this helps.

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Adjust carburetor gas and air intake on craftsman chainsaw

There is too much information to relay so I would suggest you go to and type in your saw number and on the right side there is an area for a manual. You will need to use your email addy and select a password for this but it is free. You can view or download the manual and the area you need is on page 15. Let me know if this won't work and I will copy and retype info requested.

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