Husqvarna 550xp

[Keith Gandy]

Need some help guys. The 550 I won in the raffle has alil problem. It cuts very good but the chain wont quit turning at idle. The drum spins freely and the clutch bearing is fine as is the springs for the clutch. Bruce put me in touch with Lee at LiL Red Barn where the saw came from but they dont know what can be wrong but they r checking for any recalls from husky on that particular serial #. Any ideas on the Autotune guys? Some sort of recalibration?

 

[Warped5]

Isn't it still under warranty?

Got a dealer near you?

 

[darkimpulse]

How long have you had the saw running since you had it? When I first got my 555 it had a high idle problem as well. From what my dealer told me is that it needed a reflash. After running it wot for over five minutes in wood I no longer had the problem, seems like the Autotune corrected itself. The problem hasn't come back in the years I have had it. Not sure if that helps but just something that happened to me.

If I could get my hands on the Autotune software that would be great, I would just make my own cable to connect to the saw. Would love to see the data in there.

 

[Keith Gandy]

Isn't it still under warranty?

Got a dealer near you?

Only dealer is about an hr away and we arent sure yet if they r full service

 

[Keith Gandy]

How long have you had the saw running since you had it? When I first got my 555 it had a high idle problem as well. From what my dealer told me is that it needed a reflash. After running it wot for over five minutes in wood I no longer had the problem, seems like the Autotune corrected itself. The problem hasn't come back in the years I have had it. Not sure if that helps but just something that happened to me.

If I could get my hands on the Autotune software that would be great, I would just make my own cable to connect to the saw. Would love to see the data in there.

They mentioned the wot for 7 sec to reset but heck ive cut wot a goood bit and it hasnt corrected yet

 

[darkimpulse]

Hmm besides an air leak which would be very unlikely on a new saw, it does sound like the Autotune module needs to be reset. Specifically the TPS if your getting constant high idle. Like you have said, you have run the saw at full throttle in wood for quite a bit and its still doing it. Only way I know to do a TPS reset is with the Autotune software. Some other folks may have another method for resetting it, since it's usb ie being 5 volts I would hope that Husqvarna would have a method to do a hard reset without it. However I have not come across anything like that. That's all I have, sorry I couldn't be more help Keith.

 

[Keith Gandy]

Hmm besides an air leak which would be very unlikely on a new saw, it does sound like the Autotune module needs to be reset. Specifically the TPS if your getting constant high idle. Like you have said, you have run the saw at full throttle in wood for quite a bit and its still doing it. Only way I know to do a TPS reset is with the Autotune software. Some other folks may have another method for resetting it, since it's usb ie being 5 volts I would hope that Husqvarna would have a method to do a hard reset without it. However I have not come across anything like that. That's all I have, sorry I couldn't be more help Keith.

Funny thing is its not idling what id consider high but the chain turns. Thanks tho

 

[KenJax Tree]

Maybe the hidden L screw needs to be fattened up a little

 

[Keith Gandy]

Maybe the hidden L screw needs to be fattened up a little

Wonder if counter clockwise is fattening?

 

[KenJax Tree]

Wonder if counter clockwise is fattening?

I would think so. I never had to adjust mine. There is a little brass plug you gotta get out to get to the screw.

 

[Adirondackstihl]

Hmm besides an air leak which would be very unlikely on a new saw.

Typically......you'd be correct.
The 550 has had its share of transfer cover gaskets being torn and intake boots being folded over right outta the box.

My buddy (rparrotte85) just bought a new 550 a month ago. They've been chasing gremlins in it since he bought it.
After 5-6 trips to the dealer, they replaced the entire saw yesterday.

 

[Adirondackstihl]

Wonder if counter clockwise is fattening?

It's an air bleed, not a fuel port.
By opening it, I would think you'd be allowing more air, which is the opposite of what you'd want to do for a lean condition.

 

[Duane(Pa)]

140 Cottle Ln. Jamestown, Tn.

 

[Keith Gandy]

140 Cottle Ln. Jamestown, Tn.

Dont wanna tear it down yet being a new saw under warranty and especially if its a software issue

 

[Adirondackstihl]

Dont wanna tear it down yet being a new saw under warranty and especially if its a software issue

Any good Husky dealer here will warranty that for ya......ported or not

 

[Woodpecker]

I'm betting on bad voodoo from the goatbot! Really hope you get it squared away Keith!

 

[Duane(Pa)]

Old Indian trick........with the engine running, spray some WD-40 around the transfer covers, no harm will be done, but if they are leaking, it will affect the idle speed one way or the other. Don't run it with a possible air leak.

 

[CR888]

The external transfer gasket should be checked for correct fit, a few have come up in the past that passed QC but were not right. ^^ he beat me to it!lol

 

[beaglebriar]

@Spike60

 

[Adirondackstihl]

The external transfer gasket should be checked for correct fit, a few have come up in the past that passed QC but were not right. ^^ he beat me to it!lol

And if I'm not mistaken, that gasket is not available.

This was on a brand new saw......