Question about Husqvarna Chain Saw 20" Bar
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
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
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.
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.
Monthly Routines, Off of Husqvarna website
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(milacalawn.net) 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
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
a 6ya expert can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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