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Echo sc 4400 chain saw can't get to run over a high idle.New plug,clean air filter.Will run above idle if you pull choke out half way but no real power.

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Sounds like the carburetor is not pulling sufficient fuel into itself. I assume the high speed needle on the carburetor hasn't been fooled with. You might check the muffler for plugging. Is the chain free and being oiled?

Posted on Jul 04, 2009

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I have replaced the carb, plug, lines, and both filters. I start the saw on choke, then half choke it runs but when you take it off it falls on its face when you touch the gas.


What is the make and model.? Is there a 'tick over' idle ***** on the carb.? Usually marked with an (I) does it idle with the chain brake off.? Try increasing the tick over on the carb adjustment

Mar 28, 2016 | Garden

1 Answer

My e series 142 spins the chain and idles insanely fast when I have the choke pulled out. Then when I give it throttle it calms down and then I can barely keep it idling. with throttle all the way pulled...


Check air filter- clean or replace, Make sure you have fresh fuel, A new spark while you are giving it a service, Do you know how to tune the saw? Start with basic settings 1 turn on the low and 1 turn on the high And adjust from there, You might have turned the idle up too high. The choke should always be fully in when saw is running. Hope this is a good start

Oct 04, 2013 | Husqvarna Garden

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Wont stay running. it idles kinda high. stays running with the choke on. pull the trigger 2 giv it gas it dies.


Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other problems. The idle speed screw (turned CCW) will slow the engine down. Hope this helps!

Nov 08, 2010 | Poulan Pro Chain Saw 46cc 20"

1 Answer

My echo cs440 all of a sudden stopped running at high speed. Starts fine, Idles fine. Just won't run at speed. Air, fuel filters are clean, plug looks good. Choke works fine. Spark arrestor clear. I'll try...


That is where I would go. Maybe carb clean or kit if it is a sudden change.
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.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

Mar 01, 2010 | Echo 30.1CC Chainsaw With a 14 In.bar and...

1 Answer

Echo CS-440 Chainsaw. Was cutting firewood, saw running fine until I refilled the gas tank. The gas was a few months old but looked clean and smelled OK. But after I filled the tank could not get the...


unleaded fuel is notorious for going stale,and it can leave a resinous coating in the carb-try running the saw on half choke with new gas and less oil eg 50 to 1 for say ten minutes,this should clear the gunk out-if this does not work,you have two choices-strip and clean the carb,or adjust the H (high) scew on the carb anti-clockwise by a quarter turn a time till it revs out full bore-good idea to remove the chain and wear ear defenders when adjusting-and always use a chainsaw at its max rpm,or you run the risk of "kickback"

Feb 25, 2010 | Echo 30.1CC Chainsaw With a 14 In.bar and...

1 Answer

Engine stalls after acceleration - Start fine, idles fine, but won't run at full speed. Engine dies when throttle is engaged more than half-way. Fuel filter is ok, air filter has been cleaned.


Sounds like its not "un-choking" it self, that its running like its still choked like you wold at initial start up.

Disassemble it and see if u can pysically see the activation and deactivation of the choke when u apply them.

While u are at it, also make sure:

Gas is fresh?

MIx is right?

Plug is good?

Chain brake mechanism is released.?

Good luck.

Oct 04, 2009 | Echo Garden

1 Answer

Husqvarna 142e will not stay running. Going through the sequence of full/half choke it will start and run at high rpm when choked. Even after warmed up, it will die within a few seconds after dropping the...


Hi,
If it is only running high at full choke - then it is not getting enough fuel.
You've cleaned out the whole thing - so it's not air that's the problem. It's running - so it's not a spark problem - it's a fuel problem.

If you have a fuel filter - change it out or clean it properly. If the fuel line is clear, then you need to adjust the running setting of the carb - there are usually 2 setting knobs -one for idle - one for running / mix.
You need it running richer till you get it going - then trim it back to stop it smoking and get a good rev.

Aug 28, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Chainsaw runs out of gas.


From your description, it sounds like your carb is running too lean. Make sure the spark arrestor screen is free of carbon build-up and the air filter is in place. Warm the saw up. With the saw at idle, adjust the Low adjustment screw to slightly enrich the mixture. If you turn it to run the fastest possible when idling, it is too lean. When the Low setting is right, you will be able to increase the RPM without it dying. If the High setting is way too lean, it may also die when you open up the throttle. If you run the saw too lean, it willl overheat and sieze.

Mar 29, 2009 | Echo Garden

1 Answer

Echo CS440 wont idle when warmed up


Check for air leaking at cylinder to block.gasket.

Mar 18, 2009 | Echo 30.1CC Chainsaw With a 14 In.bar and...

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