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Accidentally ran straight gas in a trimmer engine.

Posted by herricjb none (My Page) on
Thu, Jul 18, 13 at 12:26

This isn't a mower question but I've had such good luck getting help with my mower in the past here, I thought you would probably know what to do with another small engine.

I goofed up. I accidentally put straight gas in my Shindaiwa trimmer. It ran a few minutes then stopped and wouldn't start. That's when I realized what I had done. The piston has seized up (it wouldn't pull to start).

Is there anything I can do?


Follow-Up Postings:

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RE: Accidentally ran straight gas in a trimmer engine.

Hi....
I'd remove the sparkplug and put some 2 cycle oil directly into the cylinder and leave it for a 24hrs.
Hope this helps.


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RE: Accidentally ran straight gas in a trimmer engine.

  • Posted by baymee LehighValleyPA (My Page) on
    Thu, Jul 18, 13 at 16:40

Sometimes you can free up the piston with penetrating oil. Try to turn the crank in reverse, using whatever you need to do it. Sometimes this works.


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RE: Accidentally ran straight gas in a trimmer engine.

Thanks. How would you turn it in reverse?


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RE: Accidentally ran straight gas in a trimmer engine.

  • Posted by baymee LehighValleyPA (My Page) on
    Thu, Jul 18, 13 at 19:37

You could remove the head or maybe by just using a wooden dowel and hammer and with someone applying reverse force on the crank, gently tap the piston. Might take a few tries.


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RE: Accidentally ran straight gas in a trimmer engine.

Sometimes they will move after cooling. There is probably some cylinder/piston scoring but it might run again.


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RE: Accidentally ran straight gas in a trimmer engine.

I used penetrating oil and a hammer and dowel to get the piston moving. It's currently soaking in 2-cycle oil. I plan to rinse out that oil with the correct gas/oil mix and give it a try at starting. Wish me luck!


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RE: Accidentally ran straight gas in a trimmer engine.

  • Posted by baymee LehighValleyPA (My Page) on
    Fri, Jul 26, 13 at 12:54

waiting


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RE: Accidentally ran straight gas in a trimmer engine.

Sorry I didn't get back earlier on this. Much appreciation to everyone. I was able to free it up and it seems to be working the same as always. I just used a penetrating oil as suggested, tapping the cylinder lightly with a wooden dowel every day. It freed up in about a week.


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RE: Accidentally ran straight gas in a trimmer engine.

Heh heh you didn't do it any favors but, you rescued it and it will do fine. Thanks for the follow up


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