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Idels high speed or kills if I try to adjust lower

HUSQVARNA 455 with 18" bar and chain
recently changed air filter
need to choke even when motor is warm to start
Sometimes will run at lower idle speed but will always eventually kill out (approx 30 seconds or less)
Do not assume L or H adjustments are correct.

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  • richie felmet Dec 27, 2008

    i have the same problem

  • jcsaws May 11, 2010

    Does it idle slow enough for chain to stop turning at idle?

    if not sounds like air leak somewhere. start checking easy things,

    like fuel line, impulse line to carby, R and R exhaust check piston.

    check no water in fuel . IF these don't help gat back to me ,this is only the start. cheers Jc

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  • 36 Answers

Change your intank filter if you have not already. if this does not help turn L idle screw out 1/8 turn.

Posted on Jan 05, 2009

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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.
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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

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