<div dir="ltr">If by "machinist" you're thinking of boring the cylinder and installing oversize piston, that's not an option.  The plating is the show-stopper.  I'm shocked by Carl's estimate of $35 for piston kit and cylinder... I can take exactly one guess what the country of origin is, but still, with all the middlemen and shipping, we're talking manufacturing costs in the range of just a few dollars.  Good luck, and whatever you decide, I hope it is available.<div><br></div><div>SO</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Dec 3, 2021 at 8:01 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 Steve, cylinder is hard plated and is scored on the exhaust side.
    Looks like the engine is toast. It took me me forever to tear it
    down. Looks like a new blower is in my future. It would cost me more
    to have a machinist repair it than to replace it.<br>
    <br>
    Thanks,<br>
    Mike M<br>
    <br>
    <div>On 12/3/2021 7:19 PM, Stephen Offiler
      wrote:<br>
    </div>
    <blockquote type="cite">
      
      <div dir="ltr">
        <div>I am still curious about the cylinder.  Still assuming it
          has no liner, just hard plating.  If all that's true... how's
          it look?!</div>
        <div><br>
        </div>
        <div>SO<br>
        </div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Fri, Dec 3, 2021 at 6:49 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> Hi Brian and Carl, yes when it dies it will still pull
            over easily but it will not start. At this point, I've fully
            torn it down, and the piston is really messed up. Looks like
            a time for a new one. I have about 2 acres to blow clean, so
            no 5 minutes Brian LOL.<br>
            <br>
            Thanks,<br>
            Mike M<br>
            <br>
            <br>
            <div>On 12/3/2021 11:41 AM, Carl Szabelski wrote:<br>
            </div>
            <blockquote type="cite"> When cold, the cylinder is smaller
              in diameter, so you get enough compression to start with a
              worn ring. As it warms up you start to lose compression as
              the cylinder expands to the point where the worn ring no
              longer provides enough sealing and it stalls. Now, you may
              say that the worn ring is also expanding against the
              cylinder wall, and it does, but not as much as it should.
              It’s also expanding on its internal surface, so it’s
              creating a gap at the piston groove, allowing the piston
              to essentially flop around. That’s what allows the piston
              to hit the cylinder wall once it’s not being kept centered
              in the cylinder. You can pull on the cord and feel what
              you think is compression, but it’s mostly resistance from
              all the other moving pieces.
              <div><br>
              </div>
              <div>Carl<br>
                <br>
                On Thursday, December 2, 2021, Brian VanDragt <<a href="mailto:bvandragt@comcast.net" target="_blank">bvandragt@comcast.net</a>>
                wrote:<br>
                <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
                  <div dir="auto">Well if you can get your leaves blown
                    in 5 minutes, you don't have to do anything to it,
                    but you know at least the piston is scored and you
                    can't replace it without taking everything else
                    apart. When it quits can you turn it over with the
                    rope or is it stuck?
                    <div dir="auto"><br>
                    </div>
                    <div dir="auto">Brian </div>
                    <div><br>
                    </div>
                    <div dir="auto" style="font-size:100%;color:rgb(0,0,0)" align="left">
                      <div>-------- Original message --------</div>
                      <div>From: Mike M <<a href="mailto:meulenms@gmx.com" target="_blank">meulenms@gmx.com</a>>
                      </div>
                      <div>Date: 12/2/21 10:37 PM (GMT-05:00) </div>
                      <div>To: <a href="mailto:at@lists.antique-tractor.com" target="_blank">at@lists.antique-tractor.com</a>
                      </div>
                      <div>Subject: Re: [AT] Backpack leaf blower </div>
                      <div><br>
                      </div>
                    </div>
                    Hi Brian it will run, but only for 5 minutes or so,
                    then it's dead.<br>
                    <br>
                    Mike M<br>
                    <br>
                    <div>On 12/2/2021 10:22 PM, Brian VanDragt wrote:<br>
                    </div>
                    <blockquote type="cite"> No matter what parts are
                      damaged, it's not running now, and it's not going
                      to fix itself. Just take it apart and see what you
                      need to fix it.
                      <div dir="auto"><br>
                      </div>
                      <div dir="auto">Brian </div>
                      <div><br>
                      </div>
                      <div style="font-size:100%;color:rgb(0,0,0)" dir="auto" align="left">
                        <div>-------- Original message --------</div>
                        <div>From: Carl Szabelski <a href="mailto:c.s.szabelski@gmail.com" target="_blank"><c.s.szabelski@gmail.com></a>
                        </div>
                        <div>Date: 12/2/21 10:05 PM (GMT-05:00) </div>
                        <div>To: Antique Tractor Email Discussion Group
                          <a href="mailto:at@lists.antique-tractor.com" target="_blank"><at@lists.antique-tractor.com></a>
                        </div>
                        <div>Subject: Re: [AT] Backpack leaf blower </div>
                        <div><br>
                        </div>
                      </div>
                      One more thing that you might be able to do is
                      push the piston down, pull the spark plug, and try
                      to see the wall by looking through the spark plug
                      hole.
                      <div><br>
                      </div>
                      <div>Carl<br>
                        <br>
                        On Thursday, December 2, 2021, Carl Szabelski
                        <<a href="mailto:c.s.szabelski@gmail.com" target="_blank">c.s.szabelski@gmail.com</a>>
                        wrote:<br>
                        <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">If you pull
                          the head, you’ll probably find that the
                          cylinder wall is also scored. Try pushing the
                          piston down and sticking a finger in to see if
                          you can feel the wall. Maybe use something
                          like a small dental mirror. If the wall is
                          scored you can probably get a new one as well.
                          <div><br>
                          </div>
                          <div>Carl<br>
                            <br>
                            On Thursday, December 2, 2021, Mike M <<a href="mailto:meulenms@gmx.com" target="_blank">meulenms@gmx.com</a>>
                            wrote:<br>
                            <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
                              <div> Here is the best picture I could get
                                after pulling the muffler. Looks like
                                the piston is toast. Any thoughts?<br>
                                <br>
                                Regards, Mike M<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>
                                                --<br>
                                                This email has been
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                                            </div>
                                          </div>
                                          -- <br>
                                          <div dir="ltr">Moe Fretz <br>
                                            <br>
                                            L’Orignal ON,<br>
                                            Canada </div>
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