<div dir="ltr">That piston looks pretty good for one that has been run without lubrication, at least from this photo angle. Dark area, combustion getting past rings. Are the rings or ring grooves damaged, stuck, crudded up, whatever? <div><br></div><div>I have a little 2-stroke dirt bike experience but most of it was decades ago. When we had a piston seize (iron liners, unlike these new hard-plated cylinders) there was scoring everywhere, cylinder and piston alike, and rings would actually break sometimes - and then, boy, you really had to bore oversize (if you were lucky). I guess these modern engines built with different techniques are going to provide a different set of clues. I'm still surprised to see no scoring on the piston and the original machining marks still obvious.</div><div><br></div><div>I'd almost be inclined to clean everything up very thoroughly, reassemble, and see what happens. Check ring end gap in the cylinder as you go along, and maybe put in just a set of rings if they are out of spec. However - I'm not recommending this because you said it was difficult to disassemble. Your time is valuable. </div><div><br></div><div>Steve O.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Dec 8, 2021 at 6:41 PM Mike M <<a href="mailto:meulenms@gmx.com">meulenms@gmx.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
Hi Moe,<br>
Here's a shot of the piston and the retaining pin, not really sure
how to get the pin out since the retaining clip appears to be a
washer not a cir clip. I can order a new cylinder, piston, pin,
washers and and gaskets for about $40, a lot cheaper than a new
blower. Thanks for any advice anyone can offer.<br>
<br>
Regards, Mike M<br>
<br>
<br>
<div>On 12/2/2021 6:39 PM, Moe Fretz wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:large;color:rgb(166,77,121)">So
what's the cylinder inside look like?</div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:large;color:rgb(166,77,121)">Can
you save it?</div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:large;color:rgb(166,77,121)">Husqvarna trimmer
is well worth the repair costs.</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Dec 2, 2021 at 3:11 PM
Mike M <<a href="mailto:meulenms@gmx.com" target="_blank">meulenms@gmx.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div> So I pulled apart my leaf blower today, and looked at
the exhaust port, as was suggested. Heavy scoring on the
piston. So you were right, she ran it with straight fuel.<br>
Mike M<br>
<br>
<div>On 11/27/2021 7:20 PM, Moe Fretz wrote:<br>
</div>
<blockquote type="cite">
<div>
<div dir="auto">No, engine has experienced a lean
seizure. </div>
<div dir="auto">Lack of lube is another way to put it. </div>
<div dir="auto">No quick fix. </div>
<div dir="auto">The engine will need a piston and rings
at the least. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Pull off the muffler, look in at the
piston, you’ll see the piston scored on the exhaust
side. </div>
<div dir="auto">If you’re lucky the cylinder isn’t
damaged, you’ll have to </div>
<div dir="auto">pull the cylinder to check it. </div>
<div dir="auto"><br>
</div>
<div dir="auto">Used to do 15 or 20 of those every
year. </div>
<div dir="auto">One quick error, sometimes, can cost a
lot of money. </div>
</div>
<div><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sat, Nov 27, 2021
at 15:33 Mike M <<a href="mailto:meulenms@gmx.com" target="_blank">meulenms@gmx.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">So my lovely wife
was out blowing leaves the other day with my
backpack<br>
blower, and it ran out of fuel. She mistakenly
filled it with straight<br>
lawnmower gas, and after a bit it started to stumble
and then quit. She<br>
came in to tell me about it and ask what the problem
was. When I looked<br>
at the tank I noticed there was no blue tint in the
gas, and I asked her<br>
what can she filled it from, and she pointed to the
gas container I use<br>
for my zero turn. I told her that was straight gas,
and she needed to<br>
use the 2 cycle mix, that is in another red 5 gallon
can, honest<br>
mistake. She claims I told her to use that fuel,
when I know I did not. <br>
I used it today and it will run for about 5 minutes
and then sputter out<br>
and die, like it's running out of gas. It will
restart, but then the<br>
same scenario starts all over again. Is their any
chance of saving this<br>
engine? Maybe a higher oil/gas ratio? Thanks in
advance.<br>
<br>
Regards,<br>
Mike M<br>
<br>
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<div dir="ltr">Moe Fretz <br>
<br>
L’Orignal ON,<br>
Canada </div>
<br>
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