Question about Husqvarna Chain Saw 20" Bar

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Husqvarna 385 I have a husqvarna 385 saw. It starts good, idles good, but as soon as you rev the saw it starts to cut out and runs very rough. but returns to a perfect idle.

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  • Ben Jun 22, 2009

    i put a brand new plug in it and had the same reaction.

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Sounds like dirty carberator or carb needs adjustment. How is the spark plug?

Posted on Jun 22, 2009

  • Nate Stansfield
    Nate Stansfield Jun 22, 2009

    It is most likely a gunky carb

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Working on a husqvarna 385 saw we start it cuts good soon as get hot it not want to cut it dogs out clean carb new lines new spark plug


What may be happening is that the carburetor is set too lean, not enough oxygen in the mix... richen the carburetor a little more and test it out, repeat procedure.

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Working on a husqvarna 385 saw we start it cuts good soon as get hot it not want to cut it dogs out


This is a common problem. Your carburetor is set too lean causing it to starve for oxygen, richen the carb setting a bit...

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Not cutting


Please be more specific with your question.

May 22, 2012 | Husqvarna Saws

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42cc 18 inch craftsman chainsaw model 358-351910-18. Saw runs great at idle or while not cutting wood, when starting to cut wood just after the entire bar gets into the wood engine bogs down and chain...


Generally this is a fuel / air ratio problem. Usually it can be solved by a carb adjustment. On the carb there are usually two screws, one marked low or L , the other marked high or H. Low is your adjustment for idle mixture, high is for mixture at full throttle. The saw should Always be adjusted to run well during the cut. Make adjustments a little at a time, then try The saw. Continue small adjustments untill the saw is performing well at full throttle while Cutting.

Aug 09, 2011 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Hi, i have a 1999 husqvarna 254xp... its abit hard to start and never idles more than 3secs.....from doing some looking into , i think maybe the L screw needs adj? if so could u explain in simple terms how...


In simple terms here we go, turn both L screw and H screw fully in until they stop ( clock wise ) now turn the L scew out one and a half turns out, and the H screw one and a quarter turns out, start the saw ans warm up the engine, allow the saw to idle, if need be turn the idle screw in to gain a slightly fast idle, start to turn the L screw in, the revs will start to increse as the mixture leans off, thet will reach a point where the engine then starts to die because it is too len, at this point unscrew the screw quarter turn, check the machine revs up clean, if there is a hesitation unscrew the jet a smaal bit at a time until it revs clean, now adjust the idle screw so the engine idles without the cutting chain rotating around the bar, the H screw should be about right however if it sounds too rich at full throttle srew the jet in a small amount until it sounds right, the maximum rpm should not exceed 13500, this should realy be check with a rev counter, if the engine revs too high there is a fear that it will over heat and seize.

Apr 13, 2011 | Husqvarna Forest & Garden No.967012396 345...

1 Answer

The chain saw runs okay until i start to cut wood on higher revs then it cuts ouy


Does it run O.K. with high revs. with no load, but dies when you start to cut (load) ? If that is the case your carb. needs to be adjusted and that is difficult to put into words. Without knowing what make of carb you have because they can change from year to year, and also depends on the model. Without knowing make of carb I suggest you try to turn the L (low) and H (high) needles in (clockwise) until they are lightly seated so you don't damage the needle or seat. Now turn them both out (counterclockwise) one turn as a start. Start your saw to let it warm up now rev it up it should not hesitate or run rough while reving up. If it does turn low needle out 1/4 turn or more if needed until it does not hesitate. (turning any needle out will let in more gas turning in less gas) If you get this far good idling and reving up, now adjust high needle the same way. With high needle you can also try turning it in. keep on adjusting needles in or out in small increments until it runs right. If you cannot get it running right after all this, you probably need a carb overhaul, just a cleaning or carb kit if diaphrams are stiff or damaged. I hope this helps you. Please forgive grammar errors. Let me know how you made out.

Dec 01, 2010 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

2 Answers

Husqvarna 359: Has run fine for 3 years. Now when first starting idles fine but as soon as it warms up idle speed increases enough to continually engage the clutch. Carb. setting have never been changed...


I think an air leak and she is running lean. Maybe time for some pressure/vacuum testing. Continuing to tweak the carburetor may camouflage a larger problem until the saw fails.

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

Apr 05, 2010 | Husqvarna Chain Saw 20" Bar

2 Answers

My 345 chainsaw bogs down when it hits wood


There are two idle screws one high, and one low. Your high adjustment idle screw needs to be adjusted.

Jan 18, 2009 | Husqvarna Forest & Garden No.967012396 345...

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