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Jul 23, 2021 - 9:20:50 AM
Players Union Member

DC5

USA

19795 posts since 6/30/2015

So I'm out cutting firewood with my old, trusty husky. Everything is going fine cutting, splitting and stacking. Got the next few logs ready, started the saw, made one cut, and on the second cut the saw made a metalic noise, like the chain broke, and suddenly stopped. I could not get it to start again, and when I turned it over slowly I did not like the sound. I have a friend who is a small engine mechanic so I brought it to him. He pulled the starter a few times and said "there is no compression. I noted that the compression button was pushed in for ease of starting. He pulled it out, and there was more, but not what it should be, and it wasn't even coughing. We took of the cover and the spark plug was just spinning, very loose. Pulled the plug, he looked at it and said "it's burning good" when I noticed that it was missing the ground electrode. I pointed this to him and said "Isn't that missing part kind of important?" We shook the saw to try and get the piece out of the cylinder. It was not looking good. He said I could leave it with him, or go home, remove the muffler and look at the piston wall, if it was scored, then the saw was junk. I also have an inspection camera that I could use to look in the cylinder. With the camera I could find nothing wrong, but when I removed the muffler there was a long deep scratch going right down the piston and the electrode was rattling around in the muffler. I have never heard of one of these electrodes breaking off before. The old saw was one level down from their professional XP line. The replacement is one level below that, the Rancher series. The cost difference was substantial, and at 69 years old, I don't expect to be cutting at the rate I once was. Hopefully this is the last chain saw I will have to purchase. Out with it this morning, and it cuts very well, not quite as aggressive as the old saw, but fine for what I'll be doing, and it is a bit lighter also, which is good.

Jul 23, 2021 - 10:43:56 AM

banjoy

USA

9795 posts since 7/1/2006

So is your new chainsaw also a Husqvarna? I've never owned one but have used them before, they seem like a very solid machine. Sad that yours died because of a failed spark plug. What a shame.

Edited by - banjoy on 07/23/2021 10:44:23

Jul 23, 2021 - 10:54:27 AM

10441 posts since 8/22/2006

I have never seen nor heard of a spark plug breaking like that. I’ve seen many a saw in the 71/2 years of working at the Poulan Plant building and tearing them apart. It’s One of those we didn’t see that one on the radar moment. It would be interesting to see the offending plus and see if the thing may have had a flaw in the manufacturing and if there were more plugs that had similar failures.

Jul 23, 2021 - 11:17:42 AM
likes this

heavy5

USA

1810 posts since 11/3/2016

A scored cyl &/or piston does not mean the end of a two stroke engine .
get a new set of rings , disassemble , & hone the cyl SLIGHTLY & see how it runs .
I've delt w/ many two strokes from racing go carts , dirt bikes , & Rotax engines flying ultralights for myself & others .
If the scoring is NOT too severe , they will run as good as before w/ this inexpensive restoration unless you have to hire some one to do this , but still it should be not that expensive & a lot less than a new saw . These engines function w/ so much quick dynamic reciprocation , they usually are not affected if re ringed & honed . If u were closer , I'd do it for u .

Jul 23, 2021 - 11:19:12 AM
Players Union Member

DC5

USA

19795 posts since 6/30/2015

quote:
Originally posted by banjoy

So is your new chainsaw also a Husqvarna? I've never owned one but have used them before, they seem like a very solid machine. Sad that yours died because of a failed spark plug. What a shame.


Yes, this is my 3rd Husqvarna saw.  The last one didn't fail because of the saw, but because of the spark plug.

Jul 23, 2021 - 11:29:15 AM
Players Union Member

DC5

USA

19795 posts since 6/30/2015

quote:
Originally posted by heavy5

A scored cyl &/or piston does not mean the end of a two stroke engine .
get a new set of rings , disassemble , & hone the cyl SLIGHTLY & see how it runs .
I've delt w/ many two strokes from racing go carts , dirt bikes , & Rotax engines flying ultralights for myself & others .
If the scoring is NOT too severe , they will run as good as before w/ this inexpensive restoration unless you have to hire some one to do this , but still it should be not that expensive & a lot less than a new saw . These engines function w/ so much quick dynamic reciprocation , they usually are not affected if re ringed & honed . If u were closer , I'd do it for u .


It's a pretty deep scratch, more like a gouge.  I don't think honing it would do.  I had though about doing what you suggest, but the more I looked at it, the more I realized it was probably not going to get better.  I also don't know how much it scratched the cylinder wall.  If I could find a similar machine to pull the piston out of I might have tried that. 

Jul 23, 2021 - 1:33:16 PM

155 posts since 11/28/2012

I have a Husquvarna that I like a lot. Had a Stihl but it seemed to flood easily. The Husquvarna never floods and it always starts on the second or third pull even if it has not been used for a couple of months. Someone stole my Stihl so now its their problem. About the only quirk I have had with the Husquvarna is the chain brake. If you remove the cover with the chain brake engaged it is a pain in the butt to put the cover back on. I struggled for ever to spread apart that metal loop/spring but couldn't figure it out, and the manual was no help. Luckily, my local dealer had made a tool to unlock the chain brake and popped it open for free.

Jul 23, 2021 - 1:38:50 PM

heavy5

USA

1810 posts since 11/3/2016

One thing I should emphasize , honing is for ring seating , NOT for attempting to remove any scratch , etc ..

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