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John Deere L120 motor blew up

Posted by wh312-8 Rhode Island (My Page) on
Sat, Jun 11, 11 at 8:55

I recently traded a guy my Wheelhorse 312-8 for a 2007 John Deere L120. It had a 20hp Briggs and Stratton OHV Intek motor on it(model#406777). It had around 800 hours but was still running strong and wasn't smoking. two weeks later while im mowing, it starts making a grinding/rattling noise from the motor,then it made a popping noise and a dime-sized chunk came flying out of the block right behind the starter. Everywhere i have looked for a new or used motor it is $500-$700. Do you think i could rebuild my motor, or would i be better parting out the tractor? thanks


Follow-Up Postings:

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RE: John Deere L120 motor blew up

***"Do you think i could rebuild my motor?"***
NO!
***"would i be better parting out the tractor?"***
I don't have enough experience in how big the market demand is for used light line Deere's to advise one way or the other on that aspect of your situation.
Dime sized chunks flying out of the block usually demand around $1,000 (or more) to correct.


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RE: John Deere L120 motor blew up

  • Posted by baymee LehighValleyPA (My Page) on
    Sun, Jun 12, 11 at 17:21

The Wheelhorse 312-8 could have lasted several lifetimes. You didn't know what you had!


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RE: John Deere L120 motor blew up

I really liked the 312-8 but my mower deck was rotted and i could not find one that was in better shape, and i needed to mow grass! I wish i had not gotten rid of it


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RE: John Deere L120 motor blew up

You can find used engines either on craigslist, LT junk yards, Flea markets, or ebay. I see them every now and then. Don't have to be that exact model if you have skills? If not better get the exact same one for easy installation.

Expect to pay at least $300 to $500 for good one and probably as mowie said grand or more for new one. Now the next question is it worth it to you to spend that much on LT got 800 hours? Me if I had freeby engine laying around would be the only reason I would fix it. but that's me.


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RE: John Deere L120 motor blew up

"Dime sized chunks flying out of the block usually demand around $1,000 (or more) to correct." I like that Mownie! It almost seems as though there should be a sliding scale as to coin size. Well, a quarter size hole will run ya... :)


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RE: John Deere L120 motor blew up

I know a grapefruit sized hole in a Detroit Diesel Series 60 block will cost you around $12,000. :^)


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RE: John Deere L120 motor blew up

Everything else on the tractor is in really good shape. I'm not sure how it has 800 hours on it. The mower deck still has paint on the bottom of it. It looks almost brand new.


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RE: John Deere L120 motor blew up

You do see posts from people who left their key on and amassed a lot of hours...


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RE: John Deere L120 motor blew up

I have a chance to get the same motor but 21HP the extra HP won't make too much of a difference right?


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RE: John Deere L120 motor blew up

Here's a new short block on flea-bay: http://compare.ebay.com/like/180617719119?var=lv<yp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y


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