Author Topic: Husqvarna 445e....Piston ring Repair advice. (Read 392 times)

phil1863 · « **Reply #10 on:** January 17, 2018, 11:35:11 am »

Thanks Cut4fun
I am in the UK.
I asked at a local husqvarna dealer about the ring, and he quoted 10 pounds. I know that I can get it cheaper on the web, but I am assuming that it is a genuine husqvarna part, so might be my best option.
Kroi sounds good stuff, but haven't been able to find anywhere in the UK that stokes it for a reasonable price.

You mentioned Berrymans B12 reminded me that I had some carb cleaner in the garage that I bought last year, so I thought that I would give that a go. So now I am soaking it in that.

I have noticed that one end of the ring has lifted a little bit, almost to the position that I might be able to get my nail under it I am trying to be gentle, because I dont want to damage anything, especially the piston.
I am not so bothered about damaging the ring because I can easily replace that, but I want to try and avoid any damage to the piston.

I will continue tapping and soaking for a few more days, just in case it does free up.

Thanks again

Cut4fun . · « **Reply #11 on:** January 17, 2018, 12:46:25 pm »

UK yep use the greek seller on ebay then. Caber is good to use though. If the price is way cheaper for you.

phil1863 · « **Reply #12 on:** January 21, 2018, 08:01:33 am »

Well I gave it a week of tapping/soaking, but I am sorry to say my patience has run out. It had lifted one edge very slightly, so i got a small screwdriver under it and snapped the ring. I had to lever the ring off in small chunks because it was so caked in. I have cleaned out the slit using a bit of the broken ring ( I hope that I have not been too violent with it). Someone suggested that I use oven cleaner to help clean the slit , so I will get some today. I have ordered a new ring which should come early next week. In the end I bought it from my local Husqvarna dealer ( I chickened out and wanted to make sure that I got the right replacement , it was only a few quid more).

deezlfan suggested that I might put a little Moto-Seal on the flange. I was going to order some of this on ebay.....
https://www.ebay.co.uk/itm/Hylomar-Universal-Blue-Gasket-Jointing-Compound-Sealant-40g-Fuel-Resistant/281159734843?epid=1688381898&hash=item41766d163b:g:4kkAAOxyJX9SIOcA
Would that be ok to use?

Thanks again for all your help.

Cut4fun . · « **Reply #13 on:** January 21, 2018, 09:17:35 am »

I fold over emery cloth folded to clean the groove with too. Make sure to flush good when done.

I break almost every stuck ring too. No biggie

Cut4fun . · « **Reply #14 on:** January 21, 2018, 09:20:56 am »

I dont know what that blue is. This is the stuff stihl uses on theirs. Elring Dirko HT Red

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.TRS5&_nkw=Elring+Dirko+HT+Red+Silicone+Sealant+&_sacat=0

phil1863 · « **Reply #15 on:** January 21, 2018, 09:48:27 am »

Thanks cut4fun. I have ordered the Dirko HT red. I will also use some emery cloth.

Thank You

farmboy · « **Reply #16 on:** January 21, 2018, 10:44:50 pm »

Quote from: Cut4fun . on January 21, 2018, 09:17:35 am

I fold over emery cloth folded to clean the groove with too. Make sure to flush good when done.

I break almost every stuck ring too. No biggie

I just go ahead and break them and I'm a patient man. Going to replace it anyway.
Shep

phil1863 · « **Reply #17 on:** February 18, 2018, 07:54:42 am »

I have been a little slow here, but I had problems getting the dirko HT delivered and I have only just re-built the chain saw with the new ring installed. I used a very small amount of Dirko on the seal.
I have not tried to start it yet, because I would really like some advice to help prevent this problem from recurring. I really appreciate the help that I am receiving on this forum. Thank You to all!!!!

First of all I must point out that I tried doing a compression test yesterday and unfortunately I was very disappointed in the result. It measured a 100psi which I believe is not great?

Could this be because it needs to bed in before I do this test or could it be another problem?

Clutching at straws but it might be the decompression valve? Originally when I discovered about the compression problem(before the new ring fix) I did check the valve by putting soapy water on it. Unfortunately i did not dry this off and the button had seized (rusting while I was trying to fix the saw)
I soaked it in some oil and had to lightly tap to free it. I think that it is working ok, but my inexperiance might prove me wrong!!!

Moving on, why did I get this problem in the first place? I have been told that it was probably due to old fuel (which possible might be the case)?
Are there other reasons that this might occur....e.g. carb settings or to much oil in the mix? I dont want to try and start it until I know a little bit more.

I did make a stupid mistake early last year, in that I placed chain oil in the fuel tank. I immediately saw my mistake and I emptied the tank and washed it out with more fuel. But is it possible that this may have caused the problem later?
I checked the fuel filter and have posted a picture of it. To me it looks ok, but again should I replace it.

;DYour probably having a good laugh at all the mistakes that I appear to be making..... To be honest I only use the saw 2/3 times a year....perhaps i simply need more practise

Sorry for the long message and thank you so much for your valuable help.

phil1863 · « **Reply #18 on:** June 18, 2018, 04:12:09 pm »

Just a quick thanks for the great help that you guys gave me to help me fix my husqvarna. To be perfectly honest after replacing the piston ring (and the low compression) I did'nt have a lot of confidence that the saw would work. Last weekend was the first time since doing the repair that I needed to cut some wood and before that I did'nt think that the saw would be worth the effort of trying to start. I thought that anyway that I would have to use my other chainsaw to cut the wood up. Well I gave the husky a go and to my great surprise it went like a dream!!!!

...it worked perfectly and had lots of power. I hav'nt done another compression test, and I dont think that I need to bother now (IT WORKS BEAUTIFULLY). I think that the ring probably needed to bed itself in??? The saw now works as well as it ever has.

I spent all day today cutting logs with it....and will probably do the same tomorrow. I am sooooooo pleased!!!!!!

Without your help I'm not sure that I would have had the knowledge to attempt the fix.......so thank you guys (cut4Fun,farmboy, etc)

I will now make sure that I never use old fuel ever again in my chainsaws.
Thanks Again

Chainsaw Repair

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Author Topic: Husqvarna 445e....Piston ring Repair advice. (Read 392 times)

phil1863

Re: Husqvarna 445e....Piston ring Repair advice.

Cut4fun .

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phil1863

Re: Husqvarna 445e....Piston ring Repair advice.

Cut4fun .

Re: Husqvarna 445e....Piston ring Repair advice.

Cut4fun .

Re: Husqvarna 445e....Piston ring Repair advice.

phil1863

Re: Husqvarna 445e....Piston ring Repair advice.

farmboy

Re: Husqvarna 445e....Piston ring Repair advice.

phil1863

Re: Husqvarna 445e....Piston ring Repair advice.

phil1863

Re: Husqvarna 445e....Piston ring Repair advice.

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