Husqvarna 562XP - A Tale of Woe

[beaglebriar]

The only time I’ve had the hot start issue was on 85-90 degree days with a bone stock saw. After the usual modifications it’s not been a problem.

 

[HumBurner]

The only time I’ve had the hot start issue was on 85-90 degree days with a bone stock saw. After the usual modifications it’s not been a problem.

The 2014 I owned had hot start issues, but I ran it mostly in the summers. The 2017 model never did, except for when the fuel line was going.

 

[Stump Shot]

I've heard of the hot start issue, but never saw or could replicate.


What is it and what's it related to?

What's the solution?

What's the cause?

On a hot summer day the gas percolates out of the carburetor (ie vapor lock) on a 5 series the solution is to pump the "prime" button to bring cool fuel into the carburetor from the tank and return it back to the tank, choking may be necessary as well as NOT using the decompression valve. It's not just the 5 series either, I've reports of all different kinds and brands including Stihl this happening to. The 5's were just more prone than others. Some just bring extra saws and switch them out to let one cool while they heat up another, some are able to get them going again, while the rest go wee-wee-wee all the way home.

 

[Duke Thieroff]

I've never actually seen it in practice, just hear guys talk about it ...

But we see a lot of things that are more operational errors and less engineering failures.

 

[Motorka]

I don t use primer bulb on 5 series , cold or hot. Cold choke, warm high idle if don t start with no choke.
I let every saw to idle for 20-30 sec before turning off.

 

[Stump Shot]

I've never actually seen it in practice, just hear guys talk about it ...

But we see a lot of things that are more operational errors and less engineering failures.

My 550 did it to me one 90F day. It does make for a good excuse to cut in more comfortable climes.
As far as saw abuse goes that is what circles this right back around to major engine and bearing failures.

 

[Duke Thieroff]

My 550 did it to me one 90F day. It does make for a good excuse to cut in more comfortable climes.
As far as saw abuse goes that is what circles this right back around to major engine and bearing failures.

There's some engineering and QC problems with the 562s that they've kind of addressed.

They may be the most elegant saw in the market.


It's like a BMW or Audi...

When it works, it WORKS. When it doesn't, it'll cost ya.

 

[Stump Shot]

There's some engineering and QC problems with the 562s that they've kind of addressed.

They may be the most elegant saw in the market.


It's like a BMW or Audi...

When it works, it WORKS. When it doesn't, it'll cost ya.

As the pea rolls around in my head, I seem to recall when it first came out Husqvarna was kinda bragging how it was the first totally computer engineered saw they built, purposely to be as light compact, svelt in the hands and yet be a totally high performance and efficient running machine. Which is where I believe the Ying/Yang of it stemmed from.
When the wave returned to Sweden of buggered saws, they quit bragging and went back to work on it and have been ever since. The Mark II's from what I see inside and all around are the result of those efforts.

 

[Bob95065]

I stepped away from this thread and feel I should post an update.

In post #74 I stated that I got the saw running. I carefully used it to cut some rounds then checked the numbers at the shop. No change. I ran a couple tanks of gas and no problems. I'm calling this one fixed.

I was up at the shop again rummaging around the trash pile and look what followed me home. 2020 S/N with a scored piston like the saw that started this thread. This one has 14 hours on it and 100 starts.

I'm travelling until the end of June so I'll get to this one when I'm back home and through the honeydo list. First order of business is a vac/compression check followed by splitting the cases to inspect the bearings.



I'm getting into porting and this may be a good candidate for a woods port job.

 

[Bob95065]

Also I'm running Stihl HP Ultra at 40:1.

 

[Stump Shot]

Also I'm running Stihl HP Ultra at 40:1.

I can't recommend using it.
Only oil that will ruin a saw that I've seen.

 

[Bob95065]

I can't recommend using it.
Only oil that will ruin a saw that I've seen.

What do you run?

 

[Stump Shot]

What do you run?

Husqvarna XP or Kawasaki K-Tech, but I'd recommend almost anything over Ultra.
Seen too many saws piston and cylinders with carbon scoring running Stihl Ultra.
Some say it's the mix that matters, I say if it's not worth the risk at any ratio.
I'm about to start to put a new bottom end and piston in a MS 362 that seized the big end of the connecting rod onto the crankshaft after the carbon chipped away at the piston crown and ring lands. It's a premature death and totally unnecessary. This is just the latest example of many.

 

[FergusonTO35]

What do you run?

Been using VP synthetic at 40:1 for years no problemo.

 

[davidwyby]

Bob, a fella used to be here went crazy testing oils to leaner and leaner to destruction a while back. As I recall, AMSOIL is the best, wal mart syn is pretty good. Stihl was among if not the worst.

BTW, GTG this weekend in Placerville