Can anyone help me with a chainsaw problem?

I have a Husqvarna 359 chainsaw. I had it for a few years. It worked fine, then within one tank of gas, I started having problems with it and by about half of a tank, the saw just quit. It's acting like a fuel line leak. I choke the saw, it fires. I take off the choke, it starts, runs for about 2-3 seconds, it quits. I cleaned the carb (every thing is working like new, and yes I have the adjustment needles set properly). The carb's diaphrahm is like new. I changed the fuel line and fuel filter. The air filter is clean. The fuel tank vent filter is still there. I even cleaned the piston rings (which were sticking). After all that, I still had the same problem.
I took a small engine repair class and every engine I have touched works, but I am stumped with this saw.

Any ideas?

Comments

2 Responses to “Can anyone help me with a chainsaw problem?”
  1. starr says:
    July 9, 2010 at 2:27 pm

    Not positive but i think that has a return line to the gas tank from the carb.make sure that isn’t kinked or switched with the feed line from the tank Seem that when you take the needles out I always blow air into carb but not to hard

  2. Spider John says:
    July 9, 2010 at 2:27 pm

    I know this sounds like the other end of what you’re looking at but check the spark arrester in the exhaust. There should be a small piece of screen in it somewhere that gets clogged with carbon.
    If this is the case, it will run for a while but not very well, it will not rev up hardly at all.
    Not to be gross but it is kind of like the saw is constipated.


 
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