Author Topic: 562XP Scored Piston  (Read 507 times)

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Offline alsled

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Re: 562XP Scored Piston
« Reply #10 on: December 09, 2013, 04:35:12 pm »
As far as oils go, they may all meet a spec, but in real world conditions, they don't protect the same.  Granted this list is for snowmobile oil, but it gives you a idea.

https://docs.google.com/spreadsheet/ccc?key=0Ag4oddHerRnudDF3QVJLeDRrbExmSGhsc1FlWFdueHc&hl=en_US#gid=0

Offline alsled

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Re: 562XP Scored Piston
« Reply #11 on: December 09, 2013, 04:49:52 pm »


 ''Had a DA moment broke down and bought a low hr. 2012 model on Ebay. "


"But most people who spend that kind of money on a 562, aren't heading to the local Go-Go Mart to get outboard oil for their $700-800 saw."


You would be surprised on what people do, the biggest problem is  EBAY, unfortunatlly there can be a lot of ignorant people in this world....

Offline mountainlake

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Re: 562XP Scored Piston
« Reply #12 on: December 09, 2013, 05:58:02 pm »
I don't know a whole lot on the autotune but recently purchased a new saw.  I went and talked to 4 local dealers a year ago and none of them recommended a saw with autotune.  Just did some searching around and see a lot of mixed reviews on the autotune, lean burn downs, hard starting when hot.   Husqvarna claims 20% less fuel usage and 60% less emissions, well these saws have to be on the edge of going lean, so it will not take long to scuff a piston, so if the autotune fails, well you know the result.  Its to new of a development to be trust worthy if you ask me.


 Right..  Auto tune on the edge with rev boost, a bit too lean.     Steve

By the way, I bought a 390xp.  : )



Offline 660magnum

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Re: 562XP Scored Piston
« Reply #13 on: December 09, 2013, 09:47:01 pm »
I have a 545 and a 550 and like them very well. No fiddling around with the screw driver before you use them.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
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Offline Spike60

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Re: 562XP Scored Piston
« Reply #14 on: December 10, 2013, 10:00:09 am »
I don't know a whole lot on the autotune but recently purchased a new saw.  I went and talked to 4 local dealers a year ago and none of them recommended a saw with autotune.  Just did some searching around and see a lot of mixed reviews on the autotune, lean burn downs, hard starting when hot.   Husqvarna claims 20% less fuel usage and 60% less emissions, well these saws have to be on the edge of going lean, so it will not take long to scuff a piston, so if the autotune fails, well you know the result.  Its to new of a development to be trust worthy if you ask me.

By the way, I bought a 390xp.  : )



Wrong, wrong, wrong and wrong I'm afraid. Many dealers are simply not up to speed with the AT saws. They don't even have the diagnostic tool and many that do don't know how to use it. These guys will continue to steer folks away from AT cause they're scared of it. Don't know how long they plan on staying in the business, because AT is the way things are going to be.

The hard starting was due to lack of reserve voltage in the coil; nothing to do with AT.

Early 562's had case bolts that could back out, and that was the cause of some lean outs, not the AT.

If the AT fails, it defaults rich and can't wipe a saw. I've seen several 576AT's that were saved by the auto-tune dumping in extra fuel to compensate for something like a **** boot.

End users and dealers alike tend to blame everything on autotune cause they don't understand how it works. I mean if a tree falls the wrong way, it must be the auto-tune right?
Husqvarna-Jonsered

Ashokan Turf and Timber

845-657-6395

Offline alsled

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Re: 562XP Scored Piston
« Reply #15 on: December 10, 2013, 11:03:56 am »
Spike 60,  what is actually telling the carb to richer or lean the mix?  The only way to be done properly is with a o2 sensor? Throttle position sensor, and a ecu that controlla fuel flow and spark advance. So how does the auto tune work?    Also what is reserve voltage on a coil ?  Does it have a capacitor on it?

Offline SawTroll

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Re: 562XP Scored Piston
« Reply #16 on: December 10, 2013, 03:05:48 pm »

Wrong, wrong, wrong and wrong I'm afraid. Many dealers are simply not up to speed with the AT saws. They don't even have the diagnostic tool and many that do don't know how to use it. These guys will continue to steer folks away from AT cause they're scared of it. Don't know how long they plan on staying in the business, because AT is the way things are going to be.

The hard starting was due to lack of reserve voltage in the coil; nothing to do with AT.

Early 562's had case bolts that could back out, and that was the cause of some lean outs, not the AT.

If the AT fails, it defaults rich and can't wipe a saw. I've seen several 576AT's that were saved by the auto-tune dumping in extra fuel to compensate for something like a **** boot.

End users and dealers alike tend to blame everything on autotune cause they don't understand how it works. I mean if a tree falls the wrong way, it must be the auto-tune right?

Very true!   ;D

 

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