WANTED 562XP MK1 top cover, cylinder transfer caps, buffer bolt/bushing between fuel cap and purge bulb

[Jazzlesaurus]

Hey guys,

Just rebuilt a 555 over the weekend, I threw a 562xp intake on, and would love to add the transfer caps, and a top cover that fits correctly. Assuming these parts are coming from a blown up parts saw, I also need the buffer bolt/bushing between fuel cap and purge bulb.

For those curious, the decomp failed, dropped a piece of itself down into the cylinder and it got smashed a hundred times between piston and squish band before it quit. Planning to do a muffler mod, the transfer caps, and maybe some machine-work-free porting. A cylinder clean up and meteor got her running third pull.

Thanks all!

Jake

 

[hacskaroly]

For those curious, the decomp failed, dropped a piece of itself down into the cylinder and it got smashed a hundred times between piston and squish band before it quit.

For what it is worth, I have a McCulloch 10-10 that ate half of its ring, busted it into several pieces and then pounded them into the upper portion of the cylinder. Will probably need someone with a lathe to work them down if I decide to use the cylinder again!

Crazy that your decomp came apart like that.

 

[Jazzlesaurus]

For what it is worth, I have a McCulloch 10-10 that ate half of its ring, busted it into several pieces and then pounded them into the upper portion of the cylinder. Will probably need someone with a lathe to work them down if I decide to use the cylinder again!

Crazy that your decomp came apart like that.

I'm always really interested in mechanical carnage and trying to understand the why, best I can figure is there was a piece of flashing or a part of the assembly that finally dropped in.

Fortunately, the little craters mostly went up into the squish band, and didn't push much of any of the metal up (down towards the piston). I used a polishing wheel on a dremel to pull the slightly proud edges back down, and pushed on the hone just a little into the squish band. Did that help performance? No. But the alternate was trashing a cylinder, or sending it out to get on a lathe when the saw isn't particularly clean or valuable to me. Seems to run plenty well now!

Glad to know I'm not the only person who has had something fail like that, where it's P&C mashing something together rather than a lean condition or failed seal.

 

[Jazzlesaurus]

 

[Jusgunn3]

I have a couple scored 562’s that I was thinking of parting out or selling as a parts saw. I was planning to rebuild them but I have plenty of projects these days to keep me busy.

 

[Jazzlesaurus]

I have a couple scored 562’s that I was thinking of parting out or selling as a parts saw. I was planning to rebuild them but I have plenty of projects these days to keep me busy.

What would you like for the transfer caps off a cylinder, top cover, and that bushing/bolt thing? If you need my 555 caps to cover the holes in a cylinder I'm happy to send them back over.

 

[Jusgunn3]

Let me check the condition of the parts and send you some pics.

 

[Jazzlesaurus]

Appreciate it! Let me know, trying to do this on a budget since I'm not into this saw for much, so if there's varying condition of parts please let me know.

 

[Jazzlesaurus]

@Jusgunn3 This is the little screw I'm looking for:

503218874​

Part 11 here: https://www.partstree.com/models/555-husqvarna-chainsaw-2011-03/fuel-tank-3/

 

[Jusgunn3]

That is the av spring?

 

[farminkarman]

What would you like for the transfer caps off a cylinder, top cover, and that bushing/bolt thing? If you need my 555 caps to cover the holes in a cylinder I'm happy to send them back over.

Have you run 562 caps on a 555 before? Without the stuffers on the crank, the transfer ports might need to be raised several degrees to get the desired result.

 

[Jazzlesaurus]

That is the av spring?

The bolt that goes into the spring, it's got a pretty big shoulder.

 

[Jazzlesaurus]

Have you run 562 caps on a 555 before? Without the stuffers on the crank, the transfer ports might need to be raised several degrees to get the desired result.

I have not, I had seen a few folks saying they had good results getting a 555 close to a 562 with transfer caps and a muffler mod, which seemed reasonable enough.

Just so I understand, are you thinking due to case volume? The location and size of the ports on the cylinder won't change with the caps, but I believe volume inside the cap does. 562 crank is out of scope for this project for sure, I'm not worried about every drop of power, just looking for cheap wins that make progress.

 

[hacskaroly]

Just so I understand, are you thinking due to case volume?

I believe this is so, similar to the 545 and the 550. The 550 has crank stuffers where the 545 does not. From what I understand that is the main difference between the 5 series ending with 5 and the ones that don't, the ones that end in 5 don't have the stuffers.

 

[Jazzlesaurus]

I believe this is so, similar to the 545 and the 550. The 550 has crank stuffers where the 545 does not. From what I understand that is the main difference between the 5 series ending with 5 and the ones that don't, the ones that end in 5 don't have the stuffers.

Yup, 562 definitely has the stuffers. I had a 562XPG and enjoyed that saw quite a bit, but traded for a 395XP (turned out to have some clone parts the seller didn't disclose which sucked, but live and learn. Sometimes we win, sometimes we lose.)

Either way, just trying to close as much of the gap as possible on a cheap beater that I'm into for not much more than a nice lunch.

@farminkarman are you thinking that just the transfer caps will hurt performance somewhere, or just not give the full 562 experience? I'm definitely ok with partial gains on this project as long as it's not going to fall on it's face somewhere unintended.

 

[farminkarman]

Yup, 562 definitely has the stuffers. I had a 562XPG and enjoyed that saw quite a bit, but traded for a 395XP (turned out to have some clone parts the seller didn't disclose which sucked, but live and learn. Sometimes we win, sometimes we lose.)

Either way, just trying to close as much of the gap as possible on a cheap beater that I'm into for not much more than a nice lunch.

@farminkarman are you thinking that just the transfer caps will hurt performance somewhere, or just not give the full 562 experience? I'm definitely ok with partial gains on this project as long as it's not going to fall on it's face somewhere unintended.

If you aren't also altering port timing, I'm not sure you will see gains by swapping the caps. I wouldn't be surprised if it makes the saw less forgiving if/when you get on the dogs. I'm not sure though as I have never tried a straight up swap without also doing port work. I would definitely do a muffler mod and advance the ignition timing a bit.

 

[Jazzlesaurus]

If you aren't also altering port timing, I'm not sure you will see gains by swapping the caps. I wouldn't be surprised if it makes the saw less forgiving if/when you get on the dogs. I'm not sure though as I have never tried a straight up swap without also doing port work. I would definitely do a muffler mod and advance the ignition timing a bit.

Muffler mod and timing are the plan, maybe I'll do those things, reset autotune, time some cuts, swap caps, reset auto tune, and time some cuts just to see.

 

[farminkarman]

Muffler mod and timing are the plan, maybe I'll do those things, reset autotune, time some cuts, swap caps, reset auto tune, and time some cuts just to see.

Sounds like a plan!