Question about Homelite Consumer Products 9.0 Amp, 14 In. Chainsaw

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Will not idle, run away high rives

Idle screw backed out all the way, throtle is closed, air cleaner is clean.
Engine still runs away at very , very high RPM. so high of RPM the kill switch won't shut it off. I used the chain on a log to slow the engine down and then the kill switch works.

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Same problem here.... Rebuilt the carb.... Changed the plug, cleaned air filter... Same problem......

Posted on Apr 12, 2012

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Check the flapper valve at the rear of carb.possile it is loose letting in too much fuel.

Posted on Jan 07, 2009

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Initial setting for a Husqvarna; "H" and "L" screws at 1 turn CCW form 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

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Chain saw will idle, but not run at full throtle


First, check the air filter and clean it well. Then make sure the spark plug is clean and gapped properly.

Then prime, start it up, and allow it to idle, even using the trigger to make it fast idle if you can. Using a small thin screwdiver, turn the high speed idle screw on the carb in small increments to the right, kepping the speed up on the trhrottle.

The idea is to screw it out until it sputters, then screw it a half turn back in. If it doesn't smooth out when turning it to the right, try going to the left.

Afterwards you may find it doesn't run at low throttle well. If not, try the same thing starting to turn left until it smooths out. If it doesn't, screw to the right. Again, the idea is to go until it sounds rough, then back off a half turn.

You should be able to adjust it to the point where you can open the throttle all the way with smooth sure throttle increase.

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Need to adjust 3 screws. I already try to adjust them, but it runs too fast or dies. Cannot get it right. I know I have to turn in low and high all the way and then unscrew about 1 1/4 turn back. Where to...


ok here goes. you are write to wind out the screws 1 1/4 turns +/-

you have 2 scews for the carb jets, the other is the idle speed adjuster. it has a conical shaft which simply open the throtle more as you screw it in. wind this in so that it will run a bit fast . if you can, start the saw. Without pulling the throttle, slowly turn the "low" jet in , or out untill the saw runs faster. if it starts running too fast, adjust the idle speed scew down a little. do this untill it is running best. adjust the idle speed down until the cahin just stops moving. the low speed is now set. now pull the trigger and run the saw full throttle. adjust the "high" jet in or out slightly until it is running fastest. Note..if you turn either screw in too far, the engine will stall.

I hope this helps,

Another thing that could cause problems is if there is an air gap between the carb and the cylinder. check that fixing screws are tight. check that the gasket is ok. some saws have a small rubber manifold between the carb and the cylinder. if this manifold is perferated or damaged,it will let air into the engine, and therefore will not run right.
good luck.

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