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

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Offline farmboy

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562XP Scored Piston
« on: December 09, 2013, 07:55:31 am »
Been wanting a 562XP since they came out.  Want a 550 too.  Had a DA moment broke down and bought a low hr. 2012 model on Ebay.  Paid a little too much but that's what impulse buying does.  Saw came UPS with bar attached.  Packing was so good UPS couldn't kill it.  Anyway broke it down for cleaning ( saw was pretty clean).  Pulled muffler to do a MM before starting it.  Piston is scored but not too bad but never the less scored.  My question is WHY is it scored? Saw a 550 that was scored it was on a new one owned by a member of one of the saw forums.  Knowledgeable guy so it wasn't ignorance.  I thought auto tune would take care of the piston scoring issue if you mix oil correctly.  Seller has offered a full or partial refund so that's not an issue.  Went on Jacks last night $284.27 for a P&C ouch.  I need a better price I don't know if the seller will refund more than half of purchase price.  It needs a cyl cover too it's warped from a lick on the top over the AF.  That had to have happened before packing.
Shep

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Offline alsled

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Re: 562XP Scored Piston
« Reply #1 on: December 09, 2013, 09:34:56 am »
I have built and done a lot with snowmobile engines, I always ask what oil people use in their motors, along with my own testing of oils, and have found you get what you pay for in oil, a lot of it is junk.  They can't take the heat or high rpm.

I use redline race oil.

http://www.redlineoil.com/product.aspx?pid=19&pcid=16

Offline Adirondackstihl

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Re: 562XP Scored Piston
« Reply #2 on: December 09, 2013, 10:25:55 am »
Contact Spike60 for cylinder pricing.
Ashokan Turf & Timber

 ;)

tell him Adirondackstihl sent ya

Offline adam32

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Re: 562XP Scored Piston
« Reply #3 on: December 09, 2013, 12:39:45 pm »
Straight gassed is supposedly the only thing that will score a piston on an autotune, they say it will correct itself for everything else...

Offline farmboy

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Re: 562XP Scored Piston
« Reply #4 on: December 09, 2013, 01:05:03 pm »
Straight gassed is supposedly the only thing that will score a piston on an autotune, they say it will correct itself for everything else...
That's what I thought.
Shep

Offline Adirondackstihl

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Re: 562XP Scored Piston
« Reply #5 on: December 09, 2013, 01:24:52 pm »
AutoTune cannot adjust for poor or stale fuel.  ;).
And contrary to popular belief, it also cannot cure cancer

Offline SawTroll

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Re: 562XP Scored Piston
« Reply #6 on: December 09, 2013, 01:33:03 pm »
AutoTune cannot adjust for poor or stale fuel.  ;).
And contrary to popular belief, it also cannot cure cancer



I believe you are right, it dosn't have to be streight gassed. ;D

Offline alsled

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Re: 562XP Scored Piston
« Reply #7 on: December 09, 2013, 03:46:29 pm »
Autotune cannot correct for poor oil

Offline Adirondackstihl

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Re: 562XP Scored Piston
« Reply #8 on: December 09, 2013, 04:10:45 pm »
Most of todays oils meet or exceed manufacturers specs. JASO whatever whatever...etc.etc
Yes, we know you like Redline oil. Just like I prefer Motul.

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.

My money is on fuel quality. Not oil quality.
I just took in an EFCO 952 with the beginnings of what could have been a bad ending.
Detonation from stale fuel and a little heat scoring on the piston.


Offline alsled

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Re: 562XP Scored Piston
« Reply #9 on: December 09, 2013, 04:27:49 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.

By the way, I bought a 390xp.  : )


 

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