Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw Logo
Posted on Dec 15, 2010
Answered by a Fixya Expert

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I can start my chain saw but when I give it more gas it stalls.

1 Answer

Anonymous

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  • Master 710 Answers
  • Posted on Apr 12, 2011
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Joined: Feb 25, 2011
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Hi jbboitnott,

There are 3 things I can think of that would cause that problem. First, the saw was not warmed up enough. Second, did you cut the choke back after your saw warmed up? The third cause would be that your carburetor is not adjusted correctly.
If you did the first two things, then you could try adjusting your carburetor. The carb has to have a richer mixture when it's cold than when it has warmed up. If you have your carburetor set with the mixture too high, it would start but then choke on the extra gas when it was warmed up. Thus, you should lean out the carb.
Huskys carb adjustment screws are on the same side as the oil and gas fill caps. They are above the gas cap. The screw on the left is for leaning the carb, the one on the right is to richen the mixture.
So, turn the left screw, sometimes marked "L", counterclockwise to richen the carb. Adjust a very small amount at a time. Let it run a little, cut some wood, then adjust again, if need be.

I hope this helps. If it does, I'd appreciate your vote. Thanks for visiting fixya.com

Handie Andie

4 Related Answers

Anonymous

  • 211 Answers
  • Posted on Dec 01, 2008

SOURCE: husqvarna chain saw stalls

hi charlier 421

I think the small holes from the Venturi wall of the carb are clogged.To clean them you need carb disassembly.Near the needle there is a tehnological cover,under the diafragm(fuel pump).Taking off it you will see some small holes maiking conection with Venturi wall.Used ompresed air to clean them.
best wishes savumihai71

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Anonymous

  • 152 Answers
  • Posted on Mar 11, 2009

SOURCE: Poulan chain saw. After starting, chain drive won't move

If equipped, the chain brake may be engaged. Its the lever just ahead of the fore handle. (pull back on it)

If the clutch assy. were frozen, then the chain would move all the time.

Good luck
Aduz

J. Bradshaw

  • 121 Answers
  • Posted on Jul 11, 2009

SOURCE: I have a Mac 3214 chain saw and I do not have the mix ratio

40 to 1 is the ratio

Anonymous

  • 2220 Answers
  • Posted on Mar 13, 2010

SOURCE: Chain saw stalls out

If I understand your problem the saw starts and accellerates normally but bogs down when making a cut. If true only the "H" needle valve needs adjustment. This is the best explanation and procedure I have found.
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.
  • Clean the spark arrestor and muffler; if the saw cannot exhale it cannot inhale.
  • 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 Captain. HTH
Lou

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