Question about Husqvarna Chain Saw 20" Bar

2 Answers

Husqvarna 359 Low speed running

I have a Husqvarna 359 saw which I purchased online about 3 years ago. As
for use, I am just about through the first chain.

The last two times that I have used the saw I noticed that after about 5
minutes of running the motor would not stay running at a low speed. Say
something less then 50% throttle. To get it started required choking at
about 50%.

Below is what I have done to date.

The last time I used it I checked the jet settings and adjusted the high
speed to its max open, to no avail.

Stopping the saw for 5 to 10 minutes restores it to a normal state. It
will start up and idle.

I started out to remove the carburetor until I figured out it appeared to
be a major effort. I did remove the top cover to the pumping diaphragm
and every thing looked good there. Same for the fuel hose in the tank,
looks good. But still the same problem. Saw runs strong for the first
few minutes.

Having thought this through a bit more it would appear to me that its a
fuel delivery problem. Which for me means a diaphragm, hose or seal on
the crank case. But again I was after a quick fix looking for debris in
the carburetor jets, and still would be if I can figure an easy way to
remove it, just because its easy to do compare to the rest.

Any thoughts?
I also have a Husqvarna 359 with fuel problems. I am on the third fuel line. Problems with tiny holes in the fuel line are the culprit. I have had this problem since the saw was brand new. The dealer replaced the fuel line the first time which would be fuel line number two. That lasted for a couple of days before same problem appeared again. Got mad and went and bought a Stihl - still running with no problems. Last week replaced fuel line number three and cut one tree before having probelms again. Sucking air! Tried tygon tubing but it seems that ID of line is too big.

Posted by on

  • MyKidsRGoats Apr 18, 2009

    I just replaced the fuel line with a brand new one purchased from a Husqvarna service dealer. There are no clamps and the hose is not rubbing on anything outside of the fuel tank. I do agree that the problem is probably due to vibration but I can't see what is going on inside the tank. My guess is that maybe the plastic inside the tank has a rough edge on it. Do you have any information on how to get to the fuel tank on this model? I have worked on lawn mowers and small engines for years (I'm 51 now) but this one has me stumped.

  • MyKidsRGoats Apr 22, 2009

    Thanks for the info. I'm afraid that I just got a lemon on this purchase. From other posts I have read, it appears that if you were lucky enough to get a saw that didn't have problems life is great. I didn't see any answers if you happen to have a fuel tank with problems. Appears to be a break down in quality control. I know of other dealers who handled Husqvarna in the past but dropped them due to support issues.



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Monthly Routines, Off of Husqvarna website

  • Check the brake band on the chain brake for wear.
  • Check the clutch centre, clutch drum and clutch spring for wear.
  • Clean the outside of the carburettor.
  • Check the fuel filter. Change if necessary.
  • Clean the inside of the fuel tank.
  • Clean the inside of the oil tank.
  • Check all cables and connections.
  • I did read your post, but I am including a link to the manual just in case you haven't gotten it yet, or dont have it, the settings for the carb adjustments are in there.Both with and without the movement limiter And that may help your issue.
    This is one of the 2005 manuals
    This is the Manufactureers website, there are actually four different, or changing copies of the manual for this model, depending on what year it was made in.

    If you go here
    You can click on the parts catalog for the model and get VERY GOOD Schematics for this Saw and others.
    I can give you a direct link to a picture of some of the schematics here
    I host these on my own online storage, no virus worries here.
    This may take you directly to the catalog, it depends on the site above, but if not follow the website( and you will see the catalog link that has the schematics

    I think this is what you were asking for is the schematics, it sounds like you know what to look for to solve this, maybe these manual specified adjustments, and the parts catalog, will help figure out whats making it shut out, on one of my weed eaters, the vibration actually moves the choke lever on the carb, and I have to adjust it to keep it running, sometimes with a little choke on to keep it running(Wide open while weedeating thick weeds), if this helps please give me a fixya rating, it really helps, I appreciate the question.

    Posted on Apr 18, 2009

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    I don't know if this can help, but if the problem is with holes on fuel line, then replace all the fuel line with stronger ones and check the fuel hose clamps are well in place. The fuel line are probably being damaged by vibration causing them rubbing on the structure.
    Here you can buy all parts needed.

    Posted on Apr 17, 2009


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    I have a Husqvarna 357 xp which is about a year and a half old, but has had very little use for a professional saw. I was cutting with the saw upside down when it suddenly cut out. After letting it rest...

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    Hard to start.

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    Husqvarna 359 Low speed running

    A lot of 2 cycle engines do not run very well if they have been put up for a long period, (say for winter) with gas in the engine and carb. I finally learned the hard way that if you empty the gas tank and start the normal way and use up the fuel in the lines and carb, you don't get the residue build up from gas that has deteriorated over time.
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    Get some gas stabilizer and add to fresh gas, fill the tank and run a few times. It will take awhile but you can gradually get rid of any residue build up

    Hope this helps. Loringh ps Please leave a rating if appropriate Thanks

    Dec 03, 2008 | Husqvarna Chain Saw 20" Bar

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