Husqvarna t540xp question

[BS Tree Service]

Anyone know a good place to call for trouble shooting a problem with this saw? I'm having problems with it running.

It will run on choke but will puke out after a few seconds of giving it throttle.

Changed plug fuel filter and cleaned the carb and still the same. I think it may have something to do with the auto tune.


Thoughts?

 

[weedkilla]

You probably have an air leak, crimped fuel hose, etc. almost certainly just one of the things that causes a lean condition in a "normal" saw.
Auto tune may have masked the problem for a while, may have saved the saw even, very unlikely it caused the problem.

 

[BS Tree Service]

You probably have an air leak, crimped fuel hose, etc. almost certainly just one of the things that causes a lean condition in a "normal" saw.
Auto tune may have masked the problem for a while, may have saved the saw even, very unlikely it caused the problem.

I was thinking that but my hesitation was the saw is only 1 year old and only ran full time for about 4 months. Hard to believe the hoses would go bad that fast

 

[Pud]

pull the muffler ive seen a couple siezed now , pretty sure there was a service bulletin for the piston aswell

 

[weedkilla]

Something has gone wrong that fast.
I'd have it back to where you bought it and see if there is a warranty issue before I did anything myself.

 

[weedkilla]

pull the muffler ive seen a couple siezed now , pretty sure there was a service bulletin for the piston aswell

Most painful saw in the world to pull the muffler.......

 

[BS Tree Service]

pull the muffler ive seen a couple siezed now , pretty sure there was a service bulletin for the piston aswell

What do you mean siezed? Also what was the service bulletin?

 

[BS Tree Service]

Most painful saw in the world to pull the muffler.......

 

[VI sawguy]

Check the pulse hose as I've seen a couple that have split the hose at the nipple on the cylinder end. It causes them to lean out and run poorly.

 

[BS Tree Service]

Check the pulse hose as I've seen a couple that have split the hose at the nipple on the cylinder end. It causes them to lean out and run poorly.

Ok I will do that. Thank you!

 

[Pud]

What do you mean siezed? Also what was the service bulletin?

Sorry spelt seized wrong , service bulletin i saw just said there had been piston failures for the first of the 2013 saws , i had a look for it not that long ago and couldent find it tho , not wrong about getting the muffler off , when mine died i pulled the plug out and pulled the starter and could feel something was wrong and that saw still run quite well was just a pain to start and took even longer to warm up past that autotune cold start bog

 

[BS Tree Service]

Sorry spelt seized wrong , service bulletin i saw just said there had been piston failures for the first of the 2013 saws , i had a look for it not that long ago and couldent find it tho , not wrong about getting the muffler off , when mine died i pulled the plug out and pulled the starter and could feel something was wrong and that saw still run quite well was just a pain to start and took even longer to warm up past that autotune cold start bog

OK I'm going to tear it apart today and hopefully I find the problem.

What would the symptoms be if it were a piston failure? It wouldn't run at all right?

 

[Pud]

Mine ran ok just hard to start and rough idle didnt really use it for long when i noticed something wrong grabbed the 201, is it under warranty still ? Feel rough if u turn it over with no plug ? Diaphrams ok ?
Probibly dont pull it apart without a vac pressure test

 

[BS Tree Service]

Well got it all apart today. I found the hose seen in the picture disconnected from the cylinder. I would have to say that was the problem.

I put it all back together and it starts up but runs pretty rough and will idle for a bit but than just stops.

I wonder if the auto tune needs reset now because of all the wacky readings due to that hose being disconnected?

I also took the muffler off and it was good. No blockage.

 

[BS Tree Service]

Here's another picture of the hose

 

[BS Tree Service]

Mine ran ok just hard to start and rough idle didnt really use it for long when i noticed something wrong grabbed the 201, is it under warranty still ? Feel rough if u turn it over with no plug ? Diaphrams ok ?
Probibly dont pull it apart without a vac pressure test

It feels ok when turning over with no plug. It was smooth

 

[VI sawguy]

If you found the pulse hose disconnected then that will be the issue. A fuel system reset works best to get them running properly again but if you don't have access to the diag. tool the autotune will adjust it back it just takes a little longer.