Toro SR 20055 engine replacement

anthonyg_ma(z5 MA)July 2, 2013

I was mowing my lawn this past weekend when my mower suffered what is best described as "catastrophic engine failure". It started to bog down a little, like it was gas-starved, seemed to recover, then it exploded, literally. It blew a silver-dollar sized hole out the side of the casing. Smoke and shrapnel shot out into the street. Luckily no one was around me at the time. Did not see that one coming! I bought it in May 2007 and have had virtually no major problems with it in the past 6 years. Oil level was fine - I check before each use. Not sure what happened yet. I was thinking of replacing the engine now, but have *no* experience doing this. Is this a good DIY job? I'm sure my local dealer could do it, but I'm guessing the combined parts and labor cost would reach, or exceed, that of a brand-new mower. I haven't priced out a replacement engine yet. Anyone already do this (Toro SR engine replacement) and have advice to share? Thanks in advance!

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bill_kapaun

Is that a Briggs 125K02-0189-E1?

    Bookmark   July 2, 2013 at 2:25PM
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wadedavis

If I can do it, anyone can.

    Bookmark   July 2, 2013 at 9:04PM
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anthonyg_ma(z5 MA)

Bill - no, it's a 126T02-0206-B1. So far I have been unable to track down a replacement for it .

    Bookmark   July 3, 2013 at 2:02PM
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wadedavis

Re-powering your 20055 is reasonably easy. I didn't have any trouble re-powering mine, and I'm not a mechanic.

If you go to sites like Brand New Engines, Tulsa Engine Warehouse, and Small Engine Warehouse (among others) they have guides that can help you find a replacement Briggs engine that will work with that model.

If you want a Honda GCV160 engine instead, you'll need to order a new blade bolt, blade driver assembly, and brake cable from Toro, because, according to Toro's Master Parts Viewer, the ones on the 20055 won't fit this engine. (However, also according to the Toro Master Parts Viewer, the mounting screws for the 20055 will fit this engine.)

    Bookmark   July 4, 2013 at 8:41PM
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anthonyg_ma(z5 MA)

I ended up contacting B&S, and they directed me to a 3rdParty vendor that came back with the recommended replacement engine. It is model 126M02-1031-F1, in case anyone is interested. FedEx just dropped it off, so I'll see if it really is a plug-n-play replacement, as promised :-) My project for the weekend ... if it ever stops raining!

    Bookmark   July 11, 2013 at 3:09PM
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bill_kapaun

It was probably best going to "the horses mouth".
It appears that has a somewhat odd crank shaft.

    Bookmark   July 11, 2013 at 3:39PM
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